CN208015736U - A kind of sideband signals modulator circuit of Doppler VHF omnirange - Google Patents
A kind of sideband signals modulator circuit of Doppler VHF omnirange Download PDFInfo
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- CN208015736U CN208015736U CN201721832438.1U CN201721832438U CN208015736U CN 208015736 U CN208015736 U CN 208015736U CN 201721832438 U CN201721832438 U CN 201721832438U CN 208015736 U CN208015736 U CN 208015736U
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Abstract
The utility model is related to the sideband signals modulator circuits of Doppler VHF omnirange, are made of the identical PIN absorption-types modulation diode circuit of two parts and the identical peak-detector circuit of two parts；The backward end of the diode V1 of PIN absorption-types modulation diode circuit passes sequentially through inductance L1 and capacitance C2 is connect with the forward end of diode V1, after the one end inductance L1 is connected with the backward end of diode V1, it is connected with the sideband amplifying unit of Doppler VHF omnirange, the input terminal as sideband signals；Signal of the processing of peak-detector circuit I feedback of peak-detector circuit toward strange antenna, for strange modulation circuit, signal of the processing of peak-detector circuit II feedback toward even antenna, for even modulation circuit, the signal that modulation is completed is sent to antenna to radiate, reach the required sideband signals requirement of Doppler VHF omnirange, meets the system requirements of the equipment, vector aircraft is according to correct airline operation.
Description
Technical field
The utility model is related to the sideband signals modulator circuits of Doppler VHF omnirange, very high for Doppler
In the sideband modulation unit of frequency nodirectional beacon equipment, the modulation of sideband signals is realized, meet the property of Doppler's nodirectional beacon system
It can require.
Background technology
Doppler VHF omnirange equipment must emit two kinds of radiofrequency signals, can realize that Doppler's very high frequency(VHF) is complete
To the function of the transmission azimuth information of beacon, including a kind of carrier signal and two kinds of sideband signals；But sideband signals have to pass through
Modulation could be radiated to exterior space, and the modulation of sideband signals is realized by sideband signals modulator.
Doppler VHF omnirange equipment is always the overseas equipment that China introduces, this complete equipment, which is succeeded in developing, to be broken
The equipment has filled up the blank of domestic similar product always by the situation of foreign countries' monopolization, and to be this set sideband signals modulator
Standby important component is entirely autonomous utility model development.
Invention content
The utility model provides a kind of sideband signals modulator circuit of Doppler VHF omnirange, purpose
It is, to complete the design of Doppler VHF omnirange sideband signals modulator, then to Doppler VHF omnirange
The sideband signals of equipment transmitting are modulated, and are formed the sideband signals that Doppler VHF omnirange requires radiation, are reached more
The general function and technical requirement for strangling VHF Omnidirection range equipment, realizes the transmission orientation of Doppler VHF omnirange
The function of information.
To achieve the above object, used technical solution is the utility model：A kind of Doppler VHF omnirange
Sideband signals modulator circuit, it is characterised in that：Diode circuit and peak-detector circuit are modulated including PIN absorption-types；
The PIN absorption-types modulation diode circuit is modulated by PIN absorption-types modulation diode circuit I and PIN absorption-types
The identical circuit composition of II two parts of diode circuit；
The peak-detector circuit is identical by peak-detector circuit I and II two parts of peak-detector circuit
Circuit forms, and the processing of peak-detector circuit I feedback is strange modulation circuit, at peak-detector circuit II toward the signal of strange antenna
The signal that modulation is completed is sent to antenna and radiated, reach Doppler very by the signal of reason feedback toward even antenna for even modulation circuit
The required sideband signals requirement of high frequency nodirectional beacon；
The PIN absorption-types modulate diode circuit：The backward end of diode V1 passes sequentially through inductance L1 and capacitance C2
It is connect with the forward end of diode V1, after the one end inductance L1 is connected with the backward end of diode V1, with Doppler's very high frequency(VHF) omnidirectional
The sideband amplifying unit of beacon is connected, the input terminal as sideband signals；
The peak-detector circuit is：One end of resistance R4 connect respectively diode V4 forward end and coupler W1 just
To coupled end, the backward end of diode V4 connects one end of capacitance C9, resistance R6 and inductance L8 respectively, and another termination of inductance L8 is low
Frequency connector assembly Xj3, removes the sideband modulation control panel of Doppler VHF omnirange, and resistance R4, capacitance C9 and resistance R6's is another
One end is grounded；
One end of the reverse coupled terminating resistor R8 of coupler W1 and the forward end of diode V6, the backward end of diode V6
One end of capacitance C11, resistance R10 and inductance L9 are connect respectively, and another termination low frequency connector assembly Xj4 of inductance L9 goes Doppler very
The sideband modulation control panel of high frequency nodirectional beacon, the other end ground connection of resistance R8, capacitance C11 and resistance R10；
A termination PIN absorption-types of capacitance C7 modulate diode circuit diode V1 forward ends, the other end point of capacitance C7
One end of inductance L6 and the input terminal of coupler W1 are not connect, and the output end connecting interface XJ12 of coupler W1 goes Doppler's very high frequency(VHF)
The sideband modulation control panel of nodirectional beacon；
The detecting circuit being made of resistance and capacitance, the control level of generation are sent to the side of Doppler VHF omnirange
Band amplifying unit.
The utility model has the beneficial effects that：The utility model has reached Doppler VHF omnirange equipment to sideband
The requirement of signal modulation meets the system requirements of the equipment, is the important component of the equipment.By the utility model electricity
The sideband signals of road modulation are radiated in the air, and Doppler VHF omnirange equipment can be realized to aircraft launch azimuth information
Function, vector aircraft flies according to correct course line.
Description of the drawings
Fig. 1 is that the circuit of the utility model connects block diagram；
Fig. 2 is the original that the utility model IN absorption-types modulate diode circuit I or PIN absorption-types modulate diode circuit II
Reason figure；
Fig. 3 is the schematic diagram of the utility model peak-detector circuit I or peak-detector circuit II；
Fig. 4 is that the utility model PIN absorption-types modulate diode operation principle block diagram；
The schematic diagram of Fig. 5 relationships between the dynamic electric resistor and forward current of the utility model PIN pipes.
Specific implementation mode
As shown in Figure 1, Figure 2, Figure 3 shows, the sideband signals modulator circuit of a kind of Doppler VHF omnirange, including
PIN absorption-types modulate diode circuit and peak-detector circuit.
PIN absorption-types modulate diode circuit and modulate two level by PIN absorption-types modulation diode circuit I and PIN absorption-types
The identical circuit composition of II two parts of pipe circuit.
Peak-detector circuit is by peak-detector circuit I and the identical circuit of II two parts of peak-detector circuit
Composition, the processing of peak-detector circuit I feedback are strange modulation circuit, the processing feedback of peak-detector circuit II toward the signal of strange antenna
The signal that modulation is completed is sent to antenna and is radiated, Doppler's very high frequency(VHF) is reached for even modulation circuit toward the signal of idol antenna
The required sideband signals requirement of nodirectional beacon.
PIN absorption-types modulate diode circuit：The backward end of diode V1 passes sequentially through inductance L1 and capacitance C2 and two
The forward end of pole pipe V1 connects, after the one end inductance L1 is connected with the backward end of diode V1, with Doppler VHF omnirange
Sideband amplifying unit be connected, the input terminal as sideband signals.
Peak-detector circuit is：One end of resistance R4 connects the forward end of diode V4 and the positive coupling of coupler W1 respectively
End is closed, the backward end of diode V4 connects one end of capacitance C9, resistance R6 and inductance L8 respectively, and another termination low frequency of inductance L8 is inserted
Headstock Xj3, removes the sideband modulation control panel of Doppler VHF omnirange, resistance R4, capacitance C9 and resistance R6 the other end
Ground connection.
One end of the reverse coupled terminating resistor R8 of coupler W1 and the forward end of diode V6, the backward end of diode V6
One end of capacitance C11, resistance R10 and inductance L9 are connect respectively, and another termination low frequency connector assembly Xj4 of inductance L9 goes Doppler very
The sideband modulation control panel of high frequency nodirectional beacon, the other end ground connection of resistance R8, capacitance C11 and resistance R10.
A termination PIN absorption-types of capacitance C7 modulate diode circuit diode V1 forward ends, the other end point of capacitance C7
One end of inductance L6 and the input terminal of coupler W1 are not connect, and the output end connecting interface XJ12 of coupler W1 goes Doppler's very high frequency(VHF)
The sideband modulation control panel of nodirectional beacon.
The detecting circuit being made of resistance and capacitance, the control level of generation are sent to the side of Doppler VHF omnirange
Band amplifying unit.
A kind of implementation method of the sideband signals modulator circuit of Doppler VHF omnirange, steps are as follows：
The input terminal of the continuous wave sideband signals feed-in sideband modulator of 5W from sideband directional coupler, is divided into equal
Two paths of signals, be separately added into the backward end of diode V1, diode V2, diode V1, diode V2 backward end be additionally added
The bias direct current signal that modulation control plate is sent.
The strange modulated signal and coupling modulated signal signal sent from modulation control plate, are added to diode by choke coil respectively
The forward end of V1, diode V2, the modulation completed in diode V1, diode V2, principle are：By diode V1, two poles
Pipe V2 realizes amplitude modulation as an electrically controlled attenuator, and diode V1, diode V2 working frequencies are when more than 100MHz, two
Pole pipe V1, diode V2 unilateral conduction completely disappear, it is similar to linear unit, and diode V1, diode V2
The impedance magnitude of presentation depend mainly on be added on diode V1, the both ends diode V2 direct current biasing polarity and its size, and
It is almost unrelated with the amplitude of the radiofrequency signal of addition, when the voltage of diode V1, the both ends diode V2 are zero or are negative, diode
V1, diode V2 are high-impedance off-state, and when diode V1, diode V2 add positive bias, low resistive state is presented in it, and
And additional forward bias is bigger, the electric current by diode V1, diode V2 is bigger, diode V1, diode V2 forward direction electricity
Resistance is just smaller；In order to improve the linear of modulation, the letter that modulation is completed is coupled out by coupler W1, coupler W2 forward direction coupled ends
Number, the odd, even positive detecting circuit of identical two parts constituted via diode V4, it is very high that detection envelope signal is sent to Doppler
The modulator control plate of frequency nodirectional beacon, is mixed with modulated signal, obtains a kind of strange modulated signal and even modulated signal,
It is added to the backward end of modulation diode V1, diode V2, therefore forms the feedback closed loop of modulated signal, improves the line of modulation
Property；The amplitude of the continuous sideband signals of diode V1, diode V2 is added by diode under the control of the control signal
It will change with the amplitude of control signal after Vl and diode V2, complete the modulation to sideband signals.
Amplitude modulated strange sideband signals feed-in directional coupler Wl, the output of the positive coupling port of coupler Wl are sent to peak
Be worth detector carry out detection, by diode V4 forward direction detection output ends output be sideband the sixth of the twelve Earthly Branches modulated signal envelope；Coupler
The reverse coupled end of W1 then connects constitutes reversed peak wave detector by diode V6, and the output signal at the end is then sent to modulation control plate
Backward power detection part, to monitor the size of backward power, once due to sideband antenna damage or cable and sideband day
It matches bad between line, to cause larger sideband to reflect signal, then carries out sideband alarm.
The operation principle phase of the operation principle and strange sideband signals of amplitude modulated idol sideband signals feed-in directional coupler W2
Together.
It is complete that the strange modulated signal output of sideband and the output of sideband idol modulated signal of sideband modulator are sent to Doppler's very high frequency(VHF)
It is further processed to the sideband converting unit of beacon.
The detecting circuit being made of resistance and capacitance, the control level of generation are sent to the side of Doppler VHF omnirange
Band amplifying unit, removes the power of control sideband amplifying unit, forms power control loop, ensures the stabilization of power.
Fig. 4 is PIN absorption-types modulation diode operation principle block diagram, illustrates relationship and the requirement of external signal.It will be even
Continuous sideband signals and modulated signal are added on PIN pipes, and modulated signal controls the resistance of PIN pipes, then continuous sideband signals are logical
The decaying crossed after PIN pipes is just different, and amplitude is modulated signal control, to realize the amplitude modulation to sideband signals.
Relation schematic diagram when Fig. 5 is PIN absorption-types modulation two level tube resistor and current work.Principle is by PIN absorption-types
Modulation diode realizes amplitude modulation as an electrically controlled attenuator, PIN absorption-types modulate diode working frequency more than
When 100MHz, unilateral conduction completely disappears, and is similar to linear unit, and the impedance that PIN absorption-types modulation diode is presented
Size depends mainly on the polarity and its size for the direct current biasing for being added on PIN absorption-types modulation diode both ends, almost with addition
Radiofrequency signal amplitude it is unrelated；When the voltage at PIN absorption-types modulation diode both ends is zero or is negative, the modulation of PIN absorption-types
Diode high-impedance off-state；And PIN absorption-types modulation diode is when adding positive bias, low resistive state is presented in it, and additional
Forward bias is bigger, and the electric current that diode is modulated by PIN absorption-types is bigger, and PIN absorption-types modulate diode forward resistance just
It is smaller.
Claims (1)
1. a kind of sideband signals modulator circuit of Doppler VHF omnirange, it is characterised in that：Including PIN absorption-type tune
Diode circuit and peak-detector circuit processed；
The PIN absorption-types modulation diode circuit modulates two level by PIN absorption-types modulation diode circuit I and PIN absorption-types
The identical circuit composition of II two parts of pipe circuit；
The peak-detector circuit is by peak-detector circuit I and the identical circuit of II two parts of peak-detector circuit
Composition, the processing of peak-detector circuit I feedback are strange modulation circuit, the processing feedback of peak-detector circuit II toward the signal of strange antenna
The signal that modulation is completed is sent to antenna and is radiated, Doppler's very high frequency(VHF) is reached for even modulation circuit toward the signal of idol antenna
The required sideband signals requirement of nodirectional beacon；
The PIN absorption-types modulate diode circuit：The backward end of diode V1 passes sequentially through inductance L1 and capacitance C2 and two
The forward end of pole pipe V1 connects, after the one end inductance L1 is connected with the backward end of diode V1, with Doppler VHF omnirange
Sideband amplifying unit be connected, the input terminal as sideband signals；
The peak-detector circuit is：One end of resistance R4 connects the forward end of diode V4 and the positive coupling of coupler W1 respectively
End is closed, the backward end of diode V4 connects one end of capacitance C9, resistance R6 and inductance L8 respectively, and another termination low frequency of inductance L8 is inserted
Headstock Xj3, removes the sideband modulation control panel of Doppler VHF omnirange, resistance R4, capacitance C9 and resistance R6 the other end
Ground connection；
One end of the reverse coupled terminating resistor R8 of coupler W1 and the forward end of diode V6, the backward end difference of diode V6
One end of capacitance C11, resistance R10 and inductance L9 are connect, another termination low frequency connector assembly Xj4 of inductance L9 goes Doppler's very high frequency(VHF)
The sideband modulation control panel of nodirectional beacon, the other end ground connection of resistance R8, capacitance C11 and resistance R10；
A termination PIN absorption-types of capacitance C7 modulate diode circuit diode V1 forward ends, and the other end of capacitance C7 connects respectively
The output end connecting interface XJ12 of one end of inductance L6 and the input terminal of coupler W1, coupler W1 goes to Doppler's very high frequency(VHF) omnidirectional
The sideband modulation control panel of beacon；
The detecting circuit being made of resistance and capacitance, the sideband that the control level of generation is sent to Doppler VHF omnirange are put
Big unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721832438.1U CN208015736U (en) | 2017-12-25 | 2017-12-25 | A kind of sideband signals modulator circuit of Doppler VHF omnirange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721832438.1U CN208015736U (en) | 2017-12-25 | 2017-12-25 | A kind of sideband signals modulator circuit of Doppler VHF omnirange |
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| Publication Number | Publication Date |
|---|---|
| CN208015736U true CN208015736U (en) | 2018-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721832438.1U Active CN208015736U (en) | 2017-12-25 | 2017-12-25 | A kind of sideband signals modulator circuit of Doppler VHF omnirange |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879379A (en) * | 2019-11-29 | 2020-03-13 | 天津七六四通信导航技术有限公司 | A kind of aviation antenna electric pair omnidirectional beacon device |
-
2017
- 2017-12-25 CN CN201721832438.1U patent/CN208015736U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879379A (en) * | 2019-11-29 | 2020-03-13 | 天津七六四通信导航技术有限公司 | A kind of aviation antenna electric pair omnidirectional beacon device |
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