CN102832957B - Receiver and transmitter for signals with discontinuous frequency range, and receiving and transmitting method for same - Google Patents
Receiver and transmitter for signals with discontinuous frequency range, and receiving and transmitting method for same Download PDFInfo
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- CN102832957B CN102832957B CN201110159455.4A CN201110159455A CN102832957B CN 102832957 B CN102832957 B CN 102832957B CN 201110159455 A CN201110159455 A CN 201110159455A CN 102832957 B CN102832957 B CN 102832957B
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Abstract
The invention discloses a receiver and a transmitter for signals with discontinuous frequency range, and a receiving and transmitting method for the signals with discontinuous frequency range. The method comprises the steps that: the received signals are converted down or the output signals are converted up according to a phase interchanging manner of a same-phase local oscillation differential signal and a orthogonal local oscillation differential signal, so as to receive the input signals of the signals with discontinuous frequency range at the same time, and transmit the output signals of the signals with discontinuous frequency range at the same time.
Description
Technical field
The present invention relates to a kind of signal transacting mechanism, espespecially a kind of simultaneously reception/transmission can have the receiver of an input signal of discontinuous frequency band signal component, transmitter and method thereof.
Background technology
The framework of the transceiver of existing lifting frequency formula, mainly be divided into the transceiver directly falling (liter) frequency and the transceiver falling (liter) frequency through twice, such as in US Patent No. 5878332, a kind of transceiver realized with two antennas is proposed, wherein the signal transmitting and receiving of a frequency band is responsible for by an antenna, the signal transmitting and receiving of another frequency band is then responsible for by another antenna, and utilize band pass filter can receive or launch the signal of two kinds of frequency bands, but this kind of framework can not receive and dispatch the signal of this two frequency range simultaneously.The receiver that US Patent No. 7613430 proposes, then utilize rf frequency synthesizer and IF-FRE synthesizer to do twice frequency reducing to received signal, the signal and the frequency of suitable selection two frequency synthesizers avoids interference, but this frequency reducing framework is merely able to the signal receiving Continuous Band, and the signal of discontinuous frequency band cannot be received and dispatched simultaneously.In addition, the local side signal frequency that three different is then utilized in US Patent No. 7266352, the frequency receiving 802.11b/g, 802.11a (low band)/j and 802.11a (high band) three kinds of frequency bands is selected to carry out frequency reducing respectively, recycle the 4th local side signal frequency and signal is dropped to fundamental frequency, transmitting terminal is also the signal utilizing twice raising frequency and obtain three kinds of frequency bands, but this framework still cannot with the signal of time discontinuous frequency band.
Therefore, time of reception, to receive the signal of discontinuous frequency band, must stagger by existing transceiver, also must will stagger launch time when launching discontinuous frequency band signal.
Summary of the invention
An object of the present invention, be to provide a kind of receiver and the method for reseptance thereof that can receive the input signal of discontinuous frequency band signal component simultaneously, and transmitter and the launching technique of the output signal with discontinuous frequency band signal component can be transmitted, to solve the problem that prior art meets with simultaneously.
According to one embodiment of the invention, a kind of receiver that simultaneously can receive an input signal with discontinuous frequency band signal component includes a frequency synthesizer and a frequency down circuit, wherein this frequency synthesizer is in order to produce homophase local oscillations differential wave local oscillations differential wave orthogonal with, this frequency down circuit is coupled to frequency synthesizer, with this homophase local oscillations differential wave local oscillations differential wave orthogonal with this, frequency reducing is carried out to input signal, produce signal after one first frequency reducing, and with orthogonal local oscillations differential wave, frequency reducing is carried out to input signal with the homophase local oscillations differential wave after phased interchange, produce signal after one second frequency reducing.
According to another embodiment of the present invention, a kind of method of reseptance that simultaneously can receive an input signal with discontinuous frequency band signal component includes: provide a homophase local oscillations differential wave local oscillations differential wave orthogonal with; This homophase local oscillations differential wave local oscillations differential wave orthogonal with this is used to carry out frequency reducing to an input signal, to produce signal after one first frequency reducing; And homophase local oscillations differential wave after use phased interchange and orthogonal local oscillations differential wave, frequency reducing is carried out to this input signal, to produce signal after one second frequency reducing.
According to another embodiment of the present invention, a kind of transmitter that simultaneously can transmit an output signal with discontinuous frequency band signal component comprises a frequency synthesizer and a raising frequency circuit, wherein this frequency synthesizer is in order to produce homophase local oscillations differential wave local oscillations differential wave orthogonal with, this raising frequency circuit is coupled to frequency synthesizer, this homophase local oscillations differential wave local oscillations differential wave orthogonal with this is used to carry out raising frequency to one first transmission signal, to produce signal after one first raising frequency, and use the homophase local oscillations differential wave after phased interchange to carry out raising frequency with orthogonal local oscillations differential wave to one second transmission signal, to produce signal after one second raising frequency, wherein this first, two discontinuous frequency band signals in the corresponding output signal of signal after second raising frequency.
According to another embodiment of the present invention, a kind of launching technique that simultaneously can transmit an output signal with discontinuous frequency band signal component comprises: produce homophase local oscillations differential wave local oscillations differential wave orthogonal with; Use homophase local oscillations differential wave to carry out raising frequency with orthogonal local oscillations differential wave to one first transmission signal, produce signal after one first raising frequency; And the homophase local oscillations differential wave after use phased interchange carries out raising frequency with orthogonal local oscillations differential wave to one second transmission signal, to produce signal after one second raising frequency; Wherein after this first, second raising frequency signal correspondence output signal in two discontinuous frequency band signals.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that simultaneously can receive the receiver of discontinuous frequency band signal of first embodiment of the invention.
The radio frequency input stage of Fig. 2 A for the first lower frequency unit in the frequency down circuit shown in Fig. 1 and the circuit diagram of intermediate frequency output stage.
The radio frequency input stage of Fig. 2 B for the first lower frequency unit in the frequency down circuit shown in Fig. 1 and the circuit diagram of intermediate frequency output stage.
Fig. 3 is the schematic diagram that simultaneously can send out the transmitter of discontinuous frequency band signal of second embodiment of the invention.
The operating process schematic diagram that Fig. 4 A ~ Fig. 4 B is the receiver shown in Fig. 1.
The operating process schematic diagram that Fig. 5 A ~ Fig. 5 B is the transmitter shown in Fig. 3.
Primary clustering symbol description
100 receiver 105,305 antennas
110 low noise amplifier 115,315,1251,3252 frequency synthesizers
120 frequency down circuit 125,325 treatment circuits
300 transmitter 310A power amplifiers
310B driving amplifier 320 raising frequency circuit
1201A, 1201B lower frequency unit
1251A, 1251B, 3251A, 3251B mixer
1253A ~ 1253D, 3253A ~ 3253D filter
1254A ~ 1254D is beneficial amplifier once
3201A, 3201B higher frequency unit
Embodiment
Fig. 1 is the schematic diagram of the first embodiment of the present invention.Receiver 100 includes antenna 105, low noise amplifier 110, frequency synthesizer 115, frequency down circuit 120, treatment circuit 125, RF signal S _ the RF of input comprises the discontinuous frequency band signal of discontinuous first frequency range and the second frequency range, in the present embodiment, RF signal S _ RF includes center is F frequently
cthe signal component (representing with hatched example areas) of the first frequency range and center be F frequently
cthe signal component (with round dot region representation) of second frequency range of+N*W, N be more than or equal to 2 positive integer, and W represents the frequency range size of two different frequency ranges, such as 80MHz.In other embodiments, input signal also can represented by a differential wave and by positive end signal RF
+with negative terminal signal RF
-institute forms (as shown in Fig. 2 A or Fig. 2 B).
In the present embodiment, RF signal S _ RF is sent to low noise amplifier 110 via antenna 105, low noise amplifier 110 radio frequency signal S_RF carries out the effective attenuation of noise and amplifies the signal component of RF signal S _ RF, improve the signal to noise ratio (Signal-to-Noise Ratio, SNR) of RF signal S _ RF, then, to signal S_IF1 and S_IF2 after producing first, second frequency reducing, (S_IF1 and S_IF2 also represents it with differential wave respectively to the down conversion process that frequency down circuit 120 radio frequency signal S_RF carries out two-way in Fig. 2 A ~ Fig. 2 B, an intermediate-freuqncy signal in the present embodiment), frequency down circuit 120 comprises radio frequency IQ mixer 1201A and 1201B, receive oscillator signal LOI_1 and LOQ_2 provided by frequency synthesizer 115 respectively, wherein after the first frequency reducing, signal S_IF1 is that to isolate the center that RF signal S _ RF comprises be F frequently
cfrequency band signals, after the second frequency reducing signal S_IF2 then by with in order to isolate RF signal S _ RF the center that comprises be F frequently
cthe frequency band signals of+N*W, in addition, because the down conversion process of this two-way is all relevant with orthogonal signalling with the in-phase signal of same local oscillating frequency, and its difference is whether in-phase signal and orthogonal signalling have carries out phased interchange, therefore, this two-way down conversion process can be considered and produces first respectively, the same down conversion process operation of signal S_IF1 and S_IF2 after second frequency reducing, in other words, adopt the circuit framework of frequency down circuit 120, the in-phase signal of local oscillating frequency and the phase place of orthogonal signalling can be only changed in same down conversion process operation, can reach and receive simultaneously, take out or process the object of two frequency band signals of discontinuous frequency band.
The output signal of the down conversion process operation reference/employing frequency synthesizer 115 of frequency down circuit 120 is as local oscillating frequency, concerning frequency synthesizer 115, in order to suitably isolate two frequency band signals of discontinuous frequency band, its frequency of oscillation selectes the center frequently, two centers in this two frequency band signals, such as, with RF signal S _ RF, the center of two frequency band signals is respectively F frequently
cwith F
c+ N*W, therefore, the frequency of oscillation of frequency synthesizer 115 is selected in F
c+ (N/2) * W, the oscillation output signal that frequency synthesizer 115 produces is then that the local oscillations differential wave LOI_1 of homophase (comprises the positive end signal LOI as shown in Fig. 2 A ~ Fig. 2 B respectively
+with negative terminal signal LOI
-) (comprise the positive end signal LOQ as shown in Fig. 2 A ~ Fig. 2 B with the local oscillations differential wave LOQ_1 of a quadrature phase
+with negative terminal signal LOQ
-), the local oscillations differential wave LOI_1 of homophase and the local oscillations differential wave of quadrature phase are input in first, second lower frequency unit 1201A, 1201B of frequency down circuit 120 all respectively, therefore, the first lower frequency unit 1201A can with reference to the positive and negative terminal signal LOI of homophase
+, LOI
-and the positive and negative terminal signal LOQ of quadrature phase
+, LOQ
-produce signal S_IF1 after the first frequency reducing, and after generation second frequency reducing during signal S_IF2, in equivalence, frequency down circuit 120 first gets the positive end signal of one of them of this homophase local oscillations differential wave LOI_1 local oscillations differential wave LOQ_1 orthogonal with this and negative terminal signal to carry out phased interchange, to obtain this homophase local oscillations differential wave LOI_1 local oscillations differential wave LOQ_1 orthogonal with this after phased interchange, afterwards, re-use this homophase local oscillations differential wave local oscillations differential wave orthogonal with this after phased interchange and frequency reducing is carried out to the RF signal S _ RF inputted, to produce signal S_IF2 after the second frequency reducing, in implementation, the positive and negative terminal signal LOI of homophase
+, LOI
-and the positive and negative terminal signal LOQ of quadrature phase
+, LOQ
-also be input to the second lower frequency unit 1201B, make the second lower frequency unit 1201B with reference to the positive and negative terminal signal LOI of homophase
+, LOI
-and the positive and negative terminal signal LOQ of quadrature phase
+, LOQ
-produce signal S_IF2 after the second frequency reducing, but on implementing in detail, signal LOI
+, LOI
-, LOQ
+with LOQ
-inputing to the connection of the first lower frequency unit 1201A and those signals, to input to the connection of the second lower frequency unit 1201B different and reach phase place and exchange.
Please arrange in pairs or groups with reference to Fig. 2 A and Fig. 2 B, which respectively show the radio frequency input stage of first, second lower frequency unit 1201A, 1201B and the circuit diagram of intermediate frequency output stage in the frequency down circuit 120 shown in Fig. 1.The radio frequency input stage of the first lower frequency unit 1201A respectively by two groups of different transistor differential to formed, and (comprise RF in order to receive differential input signals S_RF
+, RF
-), intermediate frequency output stage then has the output stage of homophase and the output stage of quadrature phase, and the intermediate frequency output stage of homophase is made up of four transistor switch Q1 ~ Q4, and in order to receive the positive and negative terminal signal LOI of homophase phase place
+, LOI
-, reference signal LOI
+, LOI
-carry out on/off switch to carry out frequency reducing to differential input signals S_RF, produce signal SOI after the positive and negative terminal frequency reducing of homophase
+, SOI
-, wherein signal SOI after frequency reducing
+with SOI
-form the homophase phase signal component of signal S_IF1 after the first frequency reducing, and the intermediate frequency output stage of quadrature phase is also made up of four transistor switch Q5 ~ Q8, and in order to receive the positive and negative terminal signal LOQ of quadrature phase
+, LOQ
-, reference signal LOQ
+, LOQ
-carry out on/off switch to carry out frequency reducing to differential input signals S_RF, produce signal SOQ after the positive and negative terminal frequency reducing of quadrature phase
+, SOQ
-, wherein signal SOQ after frequency reducing
+with SOQ
-form the quadrature phase signal composition of signal S_IF1 after the first frequency reducing, in other words, the output signal SOI that the first lower frequency unit 1201A shown in Fig. 2 A exports
+, SOI
-, SOQ
+with SOQ
-form signal S_IF1 after the first frequency reducing.In addition, for the second lower frequency unit 1201B, the radio frequency input stage of the second lower frequency unit 1201B respectively by two groups of different transistor differential to formed, and (comprise RF in order to receive differential input signals S_RF
+, RF
-), intermediate frequency output stage then has the output stage of homophase and the output stage of quadrature phase, and the intermediate frequency output stage of homophase is made up of four transistor switch Q9 ~ Q12, and in order to receive the positive and negative terminal signal LOI of homophase phase place
+, LOI
-, reference signal LOI
+, LOI
-carry out on/off switch to carry out frequency reducing to differential input signals S_RF, produce signal SOI after the positive and negative terminal frequency reducing of homophase
+, SOI
-, wherein signal SOI after frequency reducing
+with SOI
-form the homophase phase signal component of signal S_IF2 after the second frequency reducing, and the intermediate frequency output stage of quadrature phase is also made up of four transistor switch Q13 ~ Q16, and in order to receive the positive and negative terminal signal LOQ of quadrature phase
+, LOQ
-, reference signal LOQ
+, LOQ
-carry out on/off switch to carry out frequency reducing to differential input signals S_RF, produce signal SOQ after the positive and negative terminal frequency reducing of quadrature phase
+, SOQ
-, wherein signal SOQ after frequency reducing
+with SOQ
-form the quadrature phase signal composition of signal S_IF2 after the second frequency reducing, in other words, the output signal SOI that the second lower frequency unit 1201B shown in Fig. 2 B exports
+, SOI
-, SOQ
+with SOQ
-form signal S_IF2 after the second frequency reducing, it is noted that in the intermediate frequency output stage of the quadrature phase of the first lower frequency unit 1201A, the positive and negative terminal signal LOQ of quadrature phase
+, LOQ
-be coupled to corresponding input node respectively, such as, positive end signal LOQ
+be coupled to the control end of transistor switch Q5, Q8, and negative terminal signal LOQ
-be coupled to the control end of transistor switch Q6, Q7, unlike, in the intermediate frequency output stage of the quadrature phase of the second lower frequency unit 1201B, the positive and negative terminal signal LOQ of quadrature phase
+, LOQ
-intercourse and be coupled to the node originally with same circuits structure, such as, positive end signal LOQ
+be coupled to the control end of transistor switch Q14, Q15, and negative terminal signal LOQ
-be coupled to the control end of transistor switch Q13, Q16, connection like this is in order to reach the phased interchange of input signal, but this is only wherein a kind of embodiment of phased interchange, it is not restriction of the present invention, in addition, in another embodiment, also can by the positive and negative terminal signal LOI of homophase phase place
+, LOI
-intercourse and be coupled to the node originally with same circuits structure, so also can reach the object of phased interchange, in other words, frequency down circuit 120 can by the anode differential wave LOQ of the local oscillations differential wave LOQ of quadrature phase
+with negative terminal differential wave LOQ
-carry out phased interchange, or can by the anode differential wave LOI of the local oscillations differential wave LOI of homophase
+with negative terminal differential wave LOI
-carry out phased interchange, and this enforcement change all belongs to category of the present invention.
Please referring again to Fig. 1, after the first above-mentioned produced frequency reducing, signal S_IF1 is the low sideband signal of an intermediate frequency (lower sideband signal), and signal S_IF2 is an intermediate frequency height sideband signal (upper sideband signal) after the second frequency reducing, as shown in Figure 1, after first frequency reducing, signal S_IF1 contains center frequently for the ramp signal part of (N/2) * W and center are the round dot signal section of (-N/2) * W frequently, the intensity of round dot signal section has been pressed, and signal S_IF2 contains center frequently for the round dot signal section of (N/2) * W and center are the ramp signal part of (-N/2) * W frequently after the second frequency reducing, the intensity of ramp signal part has been pressed, in other words, frequency down circuit 120 is except reaching the signal of effectively separation two discontinuous frequency bands, for undesired frequency band signals, also suitable signal strength signal intensity compacting can be carried out, therefore, make follow-up need carry out simple intermediate frequency again and turn fundamental frequency operation, fundamental frequency signal can be obtained.As shown in Figure 1, treatment circuit 125 includes mixer 1251A, 1251B, frequency synthesizer 1252, filter 1253A ~ 1253D and gain amplifier 1254A ~ 1254D, the local oscillating frequency that its frequency synthesizer 1252 adopts is (N/2) * W, and produce the local oscillations differential wave LOI_2 of homophase and orthogonal local oscillations differential wave LOQ_2 accordingly, export mixer 1251A ~ 1251B to, therefore, mixer 1251A can with reference to the local oscillations differential wave LOI_2 of homophase and orthogonal local oscillations differential wave LOQ_2, low for intermediate frequency sideband signal (that is after the first frequency reducing signal S_IF1) is down to fundamental frequency and is produced the first Received signal strength (fundamental frequency signal) S_B1, and mixer 1251B can with reference to the local oscillations differential wave LOI_2 of homophase and orthogonal local oscillations differential wave LOQ_2, intermediate frequency height sideband signal (that is after the second frequency reducing signal S_IF2) is down to fundamental frequency and is produced the second Received signal strength (fundamental frequency signal) S_B2, the in-phase signal of rear fundamental frequency signal S_B1 and orthogonal signalling again respectively through filter 1253A, 1253B and gain amplifier 1254A, the process of 1254B, can by unnecessary interference source filtering, the in-phase signal of fundamental frequency signal S_B2 and orthogonal signalling then can respectively through filter 1253C, 1253D and gain amplifier 1254C, the process of 1254D, can by unnecessary interference source filtering.In addition, if for reaching better image frequency signal inhibition, the mixer with higher mirror image rejection ratio can be adopted to realize aforesaid first, second lower frequency unit 1201A, 1201B and mixer 1251A, 1251B.
Please refer to Fig. 3, illustrated in fig. 3 is the schematic diagram that simultaneously can send out the transmitter 300 of discontinuous frequency band signal of second embodiment of the invention.Transmitter 300 includes antenna 305, power amplifier 310A, driving amplifier 310B, frequency synthesizer 315, raising frequency circuit 320, treatment circuit 325, wherein raising frequency circuit 320 includes first, second higher frequency unit 3201A and 3201B, treatment circuit 325 then includes mixer 3251A ~ 3251B and filter 3253A ~ 3253D, transmitter 300 is in order to process and to send out the RF signal S _ RF with discontinuous frequency band signal component simultaneously, as shown in Figure 1, the object of transmitter 300 is that (S_B1 is the low sideband signal of fundamental frequency by two different fundamental frequency signal S_B1 and S_B2, and S_B2 is fundamental frequency height sideband signal) be sent on two discontinuous frequency bands of not concentricity frequency, wherein the in-phase signal of fundamental frequency signal S_B1 and orthogonal signalling are respectively first by low pass filter 3253A, 3253B carries out processing to reduce unnecessary noise jamming, then fundamental frequency signal S_B1 produces the first transmission signal (its for intermediate-freuqncy signal) S_IF3 by mixer 3251A raising frequency to intermediate frequency, and fundamental frequency signal S_B2 produces the second transmission signal (its for intermediate-freuqncy signal) S_IF4 by mixer 3251B raising frequency to intermediate frequency, mixer 3251A, the local oscillating frequency of 3251B produced by frequency synthesizer 3252, its frequency of oscillation is (N/2) * W, wherein, N be more than or equal to 2 positive integer, and can by circuit manufacturer sets itself, and W is fundamental frequency signal S_B1, the frequency range size of S_B2, frequency synthesizer 3252 accordingly frequency of oscillation (N/2) * W produces the local oscillated signal LOI_2 of homophase and orthogonal local oscillated signal LOQ_2, and export mixer 3251A to, 3251B, so, mixer 3251A, 3251B foundation local oscillating frequency (N/2) * W is to fundamental frequency signal S_B1, S_B2 carries out raising frequency and produces intermediate-freuqncy signal S_IF3 and S_IF4 respectively, its centre frequency is all positioned at (N/2) * W, afterwards, the local oscillated signal that first higher frequency unit 3201A receiving intermediate frequency signal S_IF3 reference frequency synthesizer 315 produce by intermediate-freuqncy signal S_IF3 raising frequency to rf frequency, produce signal after the first raising frequency, second higher frequency unit 3201B then the local oscillated signal that produces of receiving intermediate frequency signal S_IF4 reference frequency synthesizer 315 by intermediate-freuqncy signal S_IF4 raising frequency to rf frequency, produce signal after the second raising frequency, in order to by wanted signal component, respectively raising frequency tremendously high frequency Bing Shiqi center frequency division Wei F
cwith F
c(ramp signal part is frequently F by raising frequency to center to+N*W
c, and round dot signal section is frequently F by raising frequency to center
c+ N*W), the frequency of oscillation that frequency synthesizer 315 produces is F
c+ (N/2) * W, and produce the local oscillated signal LOI_1 of homophase and orthogonal local oscillated signal LOQ_1 accordingly, to export first, second higher frequency unit 3201A and 3201B to, therefore, the first higher frequency unit 3201A can (its frequency of oscillation be F with orthogonal local oscillated signal LOQ_1 according to the local oscillated signal LOI_1 of homophase
c+ (N/2) * W) by intermediate-freuqncy signal S_IF3 raising frequency to RF application, Shi Qi center is frequently F
c, the second higher frequency unit 3201B then can (its frequency of oscillation be F with orthogonal local oscillated signal LOQ_1 according to the local oscillated signal LOI_1 of homophase
c+ (N/2) * W) by intermediate-freuqncy signal S_IF4 raising frequency to RF application, Shi Qi center is frequently F
c+ N*W, in addition, although can produce the image signal of image frequency in raising frequency process, such as, intermediate-freuqncy signal S_IF3 raising frequency is being frequently F to center by the first higher frequency unit 3201A
ctime, having part signal can be positioned at frequency is F
c+ N*W part, but utilize higher mirror to realize as the assembly of rejection ratio the signal strength signal intensity that the first higher frequency unit 3201A can suppress this part signal significantly, therefore, the image signal of image frequency can't interfere with normal signal, in addition, use higher mirror to realize as the assembly of rejection ratio the signal strength signal intensity that the second higher frequency unit 3201B also can suppress image frequency signal significantly, thus make image frequency signal can not interfere with normal signal.
By the operation of first, second higher frequency unit 3201A and 3201B, ramp signal composition can be frequently F to center by raising frequency
cfrequency band, and round dot signal component can be frequently F to center by raising frequency
cthe frequency band of+N*W, numerical value due to N be more than or equal to 2 positive integer, and the frequency range of ramp signal or round dot signal is W, therefore, afterwards through overdriven amplifier 310B and power amplifier 310A process and launched by antenna 305, namely RF signal S _ RF has the signal component of discontinuous frequency band, and including center is F frequently
cthe signal component (ramp signal) of frequency range and center be F frequently
cthe signal component (round dot signal) of the frequency range of+N*W.Due to first, the raising frequency process of the second higher frequency unit 3201A and 3201B is all relevant with orthogonal signalling with the in-phase signal of same local oscillating frequency, and its difference is whether in-phase signal and orthogonal signalling have carries out phased interchange, therefore, this two-way raising frequency process also can be considered and produces first respectively, the same raising frequency process operation of signal S_RF1 and S_RF2 after second raising frequency, in other words, adopt the circuit framework of raising frequency circuit 320, the in-phase signal of local oscillating frequency and the phase place of orthogonal signalling can be only changed in same raising frequency process operation, can reach and process simultaneously and transmit the object of two frequency band signals of discontinuous frequency band.Moreover, in above-mentioned raising frequency circuit 320, the phased interchange process of in-phase signal and the orthogonal signalling of raising frequency running and the circuit framework that uses are similar in appearance to the phased interchange process of the frequency down circuit 120 shown in Fig. 1 and its circuit framework (as shown in Fig. 2 A ~ Fig. 2 B), phased interchange process how is reached because aforementioned paragraphs has described in detail, in this for omitting length, repeat no more.
It is noted that the transmitter shown in the receiver shown in Fig. 1 of the present invention and Fig. 3 also may be implemented in same integrated circuit, realize the circuit framework of transceiver, and this design variant also belongs to category of the present invention.
In addition, more can know to make reader and grasp technical spirit of the present invention, Fig. 4 A ~ Fig. 4 B and Fig. 5 A ~ Fig. 5 B respectively illustrates the operating process of the receiver shown in Fig. 1 of the present invention and the operating process of the transmitter shown in Fig. 3, and if identical result can be reached substantially, do not need necessarily to carry out according to the sequence of steps in the flow process shown in Fig. 4 A ~ Fig. 4 B and Fig. 5 A ~ Fig. 5 B, and the step shown in Fig. 4 A ~ Fig. 4 B and Fig. 5 A ~ Fig. 5 B not necessarily will be carried out continuously, that is other step also can be inserted wherein; Step shown in Fig. 4 A ~ Fig. 4 B and Fig. 5 A ~ Fig. 5 B illustrates and is described in down respectively:
Step 402: start;
Step 404: received RF signal S_RF;
Step 406: the signal to noise ratio improving RF signal S _ RF;
Step 408: generation frequency of oscillation is the homophase local oscillations differential wave LOI_1 of FC+ (N/2) * W and orthogonal local oscillations differential wave LOQ_1;
Step 410: carry out frequency reducing with orthogonal local oscillations differential wave LOQ_1 radio frequency signal S_RF according to homophase local oscillations differential wave LOI_1, to produce signal S_IF1 after the first frequency reducing;
Step 412: carry out frequency reducing with orthogonal local oscillations differential wave LOQ_1 radio frequency signal S_RF according to the homophase local oscillations differential wave LOI_1 after phased interchange, to produce signal S_IF2 after the second frequency reducing;
Step 414: producing frequency of oscillation is the homophase local oscillations differential wave LOI_2 of (N/2) * W and orthogonal local oscillations differential wave LOQ_2;
Step 416: with orthogonal local oscillations differential wave LOQ_2, frequency reducing is carried out to obtain fundamental frequency signal S_B1 to signal S_IF1 after the first frequency reducing according to homophase local oscillations differential wave LOI_2;
Step 418: with orthogonal local oscillations differential wave LOQ_2, frequency reducing is carried out to obtain fundamental frequency signal S_B2 to signal S_IF2 after the second frequency reducing according to homophase local oscillations differential wave LOI_2;
Step 420: filtering is done to fundamental frequency signal S_B1;
Step 422: filtering is done to fundamental frequency signal S_B2; And
Step 424: terminate.
Step 502: start;
Step 504: filtering is done to fundamental frequency signal S_B1;
Step 506: filtering is done to fundamental frequency signal S_B2;
Step 508: produce homophase local oscillated signal LOI_2 and phase local oscillating signal LOQ_2 that frequency of oscillation is (N/2) * W;
Step 510: according to homophase local oscillated signal LOI_2 and phase local oscillating signal LOQ_2, produces intermediate-freuqncy signal S_IF3 by fundamental frequency signal S_B1 raising frequency;
Step 512: according to homophase local oscillated signal LOI_2 and phase local oscillating signal LOQ_2, produces intermediate-freuqncy signal S_IF4 by fundamental frequency signal S_B2 raising frequency;
Step 514: generation frequency of oscillation is the homophase local oscillations differential wave LOI_1 of FC+ (N/2) * W and orthogonal local oscillations differential wave LOQ_1;
Step 516: according to homophase local oscillations differential wave LOI_1 and orthogonal local oscillations differential wave LOQ_1, by intermediate-freuqncy signal S_IF3 raising frequency to RF application to produce signal S_RF1 after the first raising frequency;
Step 518: according to the homophase local oscillations differential wave LOI_1 after phased interchange and orthogonal local oscillations differential wave LOQ_1, by intermediate-freuqncy signal S_IF4 raising frequency to RF application to produce signal S_RF2 after the second raising frequency, wherein after first, second raising frequency, signal S_RF1 and S_RF2 forms input signal S_RF;
Step 520: the signal carrying out rear class promotes, and determines the transmitting power size of RF signal S _ RF;
Step 522: export RF signal S _ RF; And
Step 524: terminate.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the claims in the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (16)
1. can receive a receiver for an input signal with discontinuous frequency band signal component, it includes simultaneously:
One frequency synthesizer, frequency of oscillation is chosen to be the center frequently, two centers of two frequency band signals of discontinuous frequency band to be separated, produces homophase local oscillations differential wave local oscillations differential wave orthogonal with; And
One frequency down circuit, couple described frequency synthesizer, described homophase local oscillations differential wave is used to carry out frequency reducing with described orthogonal local oscillations differential wave to described input signal, to produce signal after one first frequency reducing, and use the described homophase local oscillations differential wave after phased interchange to carry out frequency reducing with described orthogonal local oscillations differential wave to described input signal, to produce signal after one second frequency reducing
Wherein, in time producing signal after described second frequency reducing, described frequency down circuit gets the positive end signal of one of them of described homophase local oscillations differential wave and described orthogonal local oscillations differential wave and negative terminal signal carries out phased interchange, to obtain the described homophase local oscillations differential wave after phased interchange and described orthogonal local oscillations differential wave.
2. receiver according to claim 1, wherein, an anode differential wave of described orthogonal local oscillations differential wave and a negative terminal differential wave are carried out phased interchange by described frequency down circuit.
3. receiver according to claim 1, wherein, an anode differential wave of described homophase local oscillations differential wave and a negative terminal differential wave are carried out phased interchange by described frequency down circuit.
4. receiver according to claim 1, separately comprises:
One treatment circuit, be coupled to described frequency down circuit, in order to produce one first Received signal strength according to signal after described first frequency reducing and to produce one second Received signal strength according to signal after described second frequency reducing, wherein, first, second Received signal strength described corresponds to first and second frequency band signals respectively;
Wherein, the homophase local oscillated signal that described treatment circuit produces according to another frequency synthesizer and a phase local oscillating signal come to carry out frequency reducing to signal after signal after described first frequency reducing and described second frequency reducing respectively, to produce described first Received signal strength and described second Received signal strength.
5. can receive a method of reseptance for an input signal with discontinuous frequency band signal component, it includes simultaneously:
With the center of two centers frequencies of two frequency band signals of discontinuous frequency band to be separated for frequency of oscillation, provide a homophase local oscillations differential wave local oscillations differential wave orthogonal with;
Described homophase local oscillations differential wave is used to carry out frequency reducing with described orthogonal local oscillations differential wave to described input signal, to produce signal after one first frequency reducing;
One of them one positive end signal and a negative terminal signal of getting described homophase local oscillations differential wave and described orthogonal local oscillations differential wave carry out phased interchange, to obtain the described homophase local oscillations differential wave after phased interchange and described orthogonal local oscillations differential wave; And
The described homophase local oscillations differential wave after phased interchange is used to carry out frequency reducing with described orthogonal local oscillations differential wave to described input signal, to produce signal after one second frequency reducing.
6. method of reseptance according to claim 5, wherein, get described homophase local oscillations differential wave and step that the described positive end signal of one of them and the described negative terminal signal of described orthogonal local oscillations differential wave carry out phased interchange includes:
One anode differential wave of described orthogonal local oscillations differential wave and a negative terminal differential wave are carried out phased interchange.
7. method of reseptance according to claim 5, wherein, get described homophase local oscillations differential wave and step that the described positive end signal of one of them and the described negative terminal signal of described orthogonal local oscillations differential wave carry out phased interchange includes:
One anode differential wave of described homophase local oscillations differential wave and a negative terminal differential wave are carried out phased interchange.
8. method of reseptance according to claim 5, separately includes:
The homophase local oscillated signal produced according to another frequency synthesizer and a phase local oscillating signal come to carry out frequency reducing to signal after signal after described first frequency reducing and described second frequency reducing respectively, to produce one first Received signal strength and one second Received signal strength, first, second Received signal strength described corresponds to two discontinuous frequency band signals in described input signal respectively.
9. can transmit a transmitter for an output signal with discontinuous frequency band signal component, it includes simultaneously:
One frequency synthesizer, frequency of oscillation is chosen to be the center frequently, two centers of two frequency band signals of discontinuous frequency band to be separated, in order to produce homophase local oscillations differential wave local oscillations differential wave orthogonal with;
One raising frequency circuit, be coupled to described frequency synthesizer, described homophase local oscillations differential wave is used to carry out raising frequency with described orthogonal local oscillations differential wave to one first transmission signal, to produce signal after one first raising frequency, and use the described homophase local oscillations differential wave after phased interchange to carry out raising frequency with described orthogonal local oscillations differential wave to one second transmission signal, to produce signal after one second raising frequency, wherein, two discontinuous frequency band signals in the corresponding described output signal of signal after first, second raising frequency described
Wherein, in time producing signal after described second raising frequency, described raising frequency circuit gets the positive end signal of one of them of described homophase local oscillations differential wave and described orthogonal local oscillations differential wave and negative terminal signal carries out phased interchange, to obtain the described homophase local oscillations differential wave after phased interchange and described orthogonal local oscillations differential wave.
10. transmitter according to claim 9, wherein, an anode differential wave of described orthogonal local oscillations differential wave and a negative terminal differential wave are carried out phased interchange by described raising frequency circuit.
11. transmitters according to claim 9, wherein, an anode differential wave of described homophase local oscillations differential wave and a negative terminal differential wave are carried out phased interchange by described raising frequency circuit.
12. transmitters according to claim 9, separately comprise:
One treatment circuit, come to carry out raising frequency to one first fundamental frequency signal and one second fundamental frequency signal respectively, to produce described first transmission signal and described second transmission signal in order to the homophase local oscillated signal that produces according to another frequency synthesizer and a phase local oscillating signal.
13. 1 kinds can be transmitted the launching technique outputed signal with discontinuous frequency band signal component simultaneously, and it includes:
With the center of two centers frequencies of two frequency band signals of discontinuous frequency band to be separated for frequency of oscillation, provide a homophase local oscillations differential wave local oscillations differential wave orthogonal with;
Described homophase local oscillations differential wave is used to carry out raising frequency with described orthogonal local oscillations differential wave to one first transmission signal, to produce signal after one first raising frequency;
One of them one positive end signal and a negative terminal signal of getting described homophase local oscillations differential wave and described orthogonal local oscillations differential wave carry out phased interchange, to obtain the described homophase local oscillations differential wave after phased interchange and described orthogonal local oscillations differential wave; And
The described homophase local oscillations differential wave after phased interchange is used to carry out raising frequency with described orthogonal local oscillations differential wave to one second transmission signal, to produce signal after one second raising frequency,
Wherein, two discontinuous frequency band signals in the corresponding described output signal of signal after first, second raising frequency described.
14. launching techniques according to claim 13, wherein, an anode differential wave and a negative terminal differential wave of described orthogonal local oscillations differential wave carry out phased interchange.
15. launching techniques according to claim 13, wherein, an anode differential wave and a negative terminal differential wave of described homophase local oscillations differential wave carry out phased interchange.
16. launching techniques according to claim 13, separately include:
The homophase local oscillated signal produced according to another frequency synthesizer and a phase local oscillating signal come to carry out raising frequency to one first fundamental frequency signal and one second fundamental frequency signal respectively, to produce described first transmission signal and described second transmission signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110159455.4A CN102832957B (en) | 2011-06-14 | 2011-06-14 | Receiver and transmitter for signals with discontinuous frequency range, and receiving and transmitting method for same |
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| CN201110159455.4A CN102832957B (en) | 2011-06-14 | 2011-06-14 | Receiver and transmitter for signals with discontinuous frequency range, and receiving and transmitting method for same |
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| CN102832957A CN102832957A (en) | 2012-12-19 |
| CN102832957B true CN102832957B (en) | 2014-12-17 |
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| CN110196437B (en) * | 2018-02-26 | 2021-12-21 | 瑞昱半导体股份有限公司 | Satellite signal receiving circuit and satellite signal receiving method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277495A (en) * | 1999-06-10 | 2000-12-20 | 诺基亚移动电话有限公司 | Transceiver for transmitting and receiving at least two channel radio-frequency signal |
| CN1306699A (en) * | 1998-04-22 | 2001-08-01 | 艾利森公司 | Direct conversion receiver |
| CN101809859A (en) * | 2007-06-26 | 2010-08-18 | 联发科技股份有限公司 | Passive mixers and high-Q filters using passive mixers |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002075942A2 (en) * | 2001-03-14 | 2002-09-26 | California Institute Of Technology | Concurrent dual-band receiver architecture |
| DE102006029482A1 (en) * | 2006-06-27 | 2008-01-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Receiver and method for receiving a first usable frequency band and a second usable frequency band |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306699A (en) * | 1998-04-22 | 2001-08-01 | 艾利森公司 | Direct conversion receiver |
| CN1277495A (en) * | 1999-06-10 | 2000-12-20 | 诺基亚移动电话有限公司 | Transceiver for transmitting and receiving at least two channel radio-frequency signal |
| CN101809859A (en) * | 2007-06-26 | 2010-08-18 | 联发科技股份有限公司 | Passive mixers and high-Q filters using passive mixers |
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