CN202153722U - Frequency multiplication circuit - Google Patents
Frequency multiplication circuit Download PDFInfo
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- CN202153722U CN202153722U CN 201120297238 CN201120297238U CN202153722U CN 202153722 U CN202153722 U CN 202153722U CN 201120297238 CN201120297238 CN 201120297238 CN 201120297238 U CN201120297238 U CN 201120297238U CN 202153722 U CN202153722 U CN 202153722U
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- 230000003321 amplification Effects 0.000 claims abstract description 24
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 24
- 230000005284 excitation Effects 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims description 24
- 238000011084 recovery Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 2
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- 238000001228 spectrum Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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Abstract
The present utility model discloses a frequency multiplication circuit. A signal output end of a signal amplification module is connected with a signal input end of a signal excitation module, a signal output end of the signal excitation module is connected with a signal input end of a filter, and a signal output end of the filter is connected with a signal input end of a band-pass filter BF1 through a step recovery diode SRD. In the frequency multiplication circuit, by arranging the signal amplification module, the signal excitation module, a low pass filter LP1, the step recovery diode SRD and the band-pass filter BF1, the X times frequency multiplication (X can be odd or even number) can be realized, and the frequency can be doubled to a frequency multiplication circuit of a needed frequency at once and for all. The frequency multiplication circuit has a low requirement on the input signal frequency and can suit initial signals of various frequency ranges. Moreover, the circuit is simple in structure and convenient in use.
Description
Technical field
The utility model relates to radio-frequency technique design field in the mobile communication, is specifically related to a kind of frequency multiplier circuit.
Technical background
In the radio system design; In order to realize the frequency conversion designing requirement of frequency; Often need the leap interval of frequency change bigger; Generally need carry out 2～8 times frequency multiplication to frequency signal, to realize the frequency change of frequency by 1～3GHz to 7～23GHz, the signal after the frequency multiplication generally is used for the local oscillator input of frequency mixer.
What extensively adopt in the industry at present is that frequency multiplication IC (integrated circuit) device is realized the process of frequency multiplication of radiofrequency signal, but is to use frequency multiplication IC device only can realize the frequency multiplication design of 2 multiple, like the design of 2 frequencys multiplication, 4 frequencys multiplication and 8 frequencys multiplication.As will be with signal 4 frequencys multiplication of a 3.5GHz to 14G, the mode that realizes with frequency multiplication IC can adopt the HMC575 of HITTITE company that 3.5GHz signal 2 frequencys multiplication are arrived 7GHz earlier, the HMC368 that adopts HITTITE company then with 7GHz signal 2 overtones bands to 14GHz.
In addition; Adopt frequency multiplication IC device to realize that frequency multiplication also can receive the device condition restriction, like HMC575 frequency input signal being required is 3～4.5GHz, and the mode of often carrying out frequency multiplication with 2 multiple is had relatively high expectations to the mixting circuit of system design; For complicated system; The original frequency that possibly need PLL of independent design (Phase Locked Loop, phase-locked loop) loop to provide frequency multiplication to use, this scheme exist repeatedly frequency conversion to cause RF index to worsen; More to amplifier in the circuit and filter type requirements, shortcomings such as debug difficulties.
The utility model content
The purpose of the utility model is to above-mentioned technical problem; But provide a kind of odd number inferior or even number time frequency multiplication, and can be disposable with the frequency multiplier circuit of frequency frequency multiplication, in addition to required frequency; This frequency multiplier circuit is lower to the requirement of frequency input signal, can adapt to the initialize signal of multiple frequency range.
For realizing this purpose; A kind of frequency multiplier circuit that the utility model designed; It is characterized in that: it comprises signal amplification module, signal excitation module, filter, snap-off diode SRD and band pass filter BF 1; Wherein, The signal output part of said signal amplification module connects the signal input part of signal excitation module, and the signal output part of signal excitation module connects the signal input part of filter, and the signal output part of filter is through the signal input part of snap-off diode SRD connecting band bandpass filter BF1.
Said filter is low pass filter LP1 or dielectric filter.
Said signal excitation module comprises resistance R 2, inductance L 2 and resistance R 3; Wherein, One end ground connection of said resistance R 2; The other end of resistance R 2 connects the signal output part of signal amplification module, and an end of inductance L 2 connects the signal output part of signal amplification module, and the other end of inductance L 2 is through resistance R 3 ground connection.
The positive pole of said snap-off diode SRD connects the signal output part of low pass filter LP1, the minus earth of snap-off diode SRD.
Said signal amplification module comprises capacitor C 1～C4, amplifier Q1, inductance L 1 and resistance R 1, and wherein, an end of capacitor C 1 connects the signal input part of amplifier Q1, and the signal output part of amplifier Q1 connects an end of capacitor C 4; Inductance L 1, capacitor C 2, capacitor C 3 and resistance R 1 constitute the biasing circuit of amplifier Q1; One end of said inductance L 1 is connected to the signal output part of amplifier Q1, and the other end of inductance L 1 is connected to ground through capacitor C 2, and the other end of inductance L 1 also connects an end of resistance R 1; The other end of resistance R 1 is through capacitor C 3 ground connection; The other end of resistance R 1 connects power supply, and two earth terminals of said amplifier Q1 are ground connection respectively, and the other end of said capacitor C 4 is the signal output part of signal amplification module.
The utility model is through signalization amplification module, signal excitation module, low pass filter LP1, snap-off diode SRD and band pass filter BF1; Can realize the inferior or even number time frequency multiplication of odd number; And can be disposable with the frequency multiplier circuit of frequency frequency multiplication to required frequency; In addition, the utility model is lower to the requirement of frequency input signal, can adapt to the initialize signal of multiple frequency range.The utility model also has advantage simple in structure, easy to use.
Description of drawings
Fig. 1 is the theory diagram of the utility model.
Fig. 2 is the circuit diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify:
A kind of frequency multiplier circuit as illustrated in fig. 1 and 2; It is characterized in that: it comprises signal amplification module, signal excitation module, low pass filter LP1, snap-off diode SRD and band pass filter BF1; Wherein, The signal output part of signal amplification module connects the signal input part of signal excitation module; The signal output part of signal excitation module connects the signal input part of low pass filter LP1, and the signal output part of low pass filter LP1 is through the signal input part of snap-off diode SRD connecting band bandpass filter BF1.
In the technique scheme, low pass filter LP1 usable medium filter replaces.
In the technique scheme, the signal amplification module comprises capacitor C 1～C4, amplifier Q1, inductance L 1 and resistance R 1, and wherein, an end of capacitor C 1 connects the signal input part of amplifier Q1, and the signal output part of amplifier Q1 connects an end of capacitor C 4; Inductance L 1, capacitor C 2, capacitor C 3 and resistance R 1 constitute the biasing circuit of amplifier Q1; One end of inductance L 1 is connected to the signal output part of amplifier Q1, and the other end of inductance L 1 is connected to ground through capacitor C 2, and the other end of inductance L 1 also connects an end of resistance R 1; The other end of resistance R 1 is through capacitor C 3 ground connection; Other end connection+5V the power supply of resistance R 1, two earth terminals of amplifier Q1 are ground connection respectively, and the other end of capacitor C 4 is the signal output part of signal amplification module.
The signal excitation module comprises resistance R 2, inductance L 2 and resistance R 3; Wherein, an end ground connection of resistance R 2, the other end of resistance R 2 connects the signal output part of signal amplification module; One end of inductance L 2 connects the signal output part of signal amplification module, and the other end of inductance L 2 is through resistance R 3 ground connection.
The positive pole of snap-off diode SRD connects the signal output part of low pass filter LP1, the minus earth of snap-off diode SRD.The earth terminal ground connection of low pass filter LP1, the earth terminal ground connection of band pass filter BF1.
In the technique scheme, the signal amplification module is chosen the power requirement of input signal F (in) according to frequency and the snap-off diode SRD of input signal F (in); The signal excitation module makes this inductance storage power when snap-off diode SRD is in the forward low impedance state; And when it is in reverse high impedance status, make inductance at the abrupt release energy, and form the extremely wide narrow potential pulse of a frequency spectrum, make its concentration of energy near required harmonic wave through band pass filter BF1, to obtain efficient output; Snap-off diode SRD generally uses MSD 700 series and the MMD840 series of Metelics company; The little band design of the general employing of band pass filter BF1, the output frequency-doubled signal F (OUT) of design is by this Filter Design bandwidth decision.
Be input to the course of work that the whole process of signal output is come analysis circuit with Fig. 2 from signal below:
From need frequency-doubled signal of F (in) input; Through the signal amplification module signal amplitude is adjusted to the needed input range of snap-off diode SRD; The harmonic attenuation amplitude of the different orders that snap-off diode SRD is produced is bigger; The harmonic attenuation that order is high more is big more, and snap-off diode SRD frequency multiplier is used for high order frequency (the frequency multiplication number of times reaches as high as 20 times) more, and shg efficiency is higher; Its shg efficiency is about 1/n (n representes harmonic number), according to the power magnitude of the order harmonic component design input signal F (in) that will get; The signal excitation module forms the extremely wide narrow potential pulse of frequency spectrum; Utilize the reactance switching characteristic of snap-off diode SRD can produce N (N＞2) order harmonic component; Low pass filter LP1 suppresses the high order spurious signal that the signal amplification module brings, and suppresses playing a reversed role of high order harmonic component simultaneously; The harmonic component of obtaining corresponding order through design band pass filter BF1 is as frequency-doubled signal, and the N order harmonic component promptly is the N frequency-doubled signal that designing institute needs, and the scope that generally designs N is 2～9.
The content that this specification is not done to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (5)
1. frequency multiplier circuit; It is characterized in that: it comprises signal amplification module, signal excitation module, filter, snap-off diode SRD and band pass filter BF1; Wherein, The signal output part of said signal amplification module connects the signal input part of signal excitation module, and the signal output part of signal excitation module connects the signal input part of filter, and the signal output part of filter is through the signal input part of snap-off diode SRD connecting band bandpass filter BF1.
2. frequency multiplier circuit according to claim 1 is characterized in that: said filter is low pass filter LP1 or dielectric filter.
3. frequency multiplier circuit according to claim 2; It is characterized in that: said signal excitation module comprises resistance R 2, inductance L 2 and resistance R 3; Wherein, an end ground connection of said resistance R 2, the other end of resistance R 2 connects the signal output part of signal amplification module; One end of inductance L 2 connects the signal output part of signal amplification module, and the other end of inductance L 2 is through resistance R 3 ground connection.
4. frequency multiplier circuit according to claim 3 is characterized in that: the positive pole of said snap-off diode SRD connects the signal output part of low pass filter LP1, the minus earth of snap-off diode SRD.
5. according to claim 2 or 3 or 4 described frequency multiplier circuits; It is characterized in that: said signal amplification module comprises capacitor C 1～C4, amplifier Q1, inductance L 1 and resistance R 1; Wherein, One end of capacitor C 1 connects the signal input part of amplifier Q1, and the signal output part of amplifier Q1 connects an end of capacitor C 4; Inductance L 1, capacitor C 2, capacitor C 3 and resistance R 1 constitute the biasing circuit of amplifier Q1; One end of said inductance L 1 is connected to the signal output part of amplifier Q1, and the other end of inductance L 1 is connected to ground through capacitor C 2, and the other end of inductance L 1 also connects an end of resistance R 1; The other end of resistance R 1 is through capacitor C 3 ground connection; The other end of resistance R 1 connects power supply, and two earth terminals of said amplifier Q1 are ground connection respectively, and the other end of said capacitor C 4 is the signal output part of signal amplification module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120297238 CN202153722U (en) | 2011-08-16 | 2011-08-16 | Frequency multiplication circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120297238 CN202153722U (en) | 2011-08-16 | 2011-08-16 | Frequency multiplication circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202153722U true CN202153722U (en) | 2012-02-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120297238 Expired - Fee Related CN202153722U (en) | 2011-08-16 | 2011-08-16 | Frequency multiplication circuit |
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| CN (1) | CN202153722U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731276A (en) * | 2013-12-26 | 2014-04-16 | 朱向伟 | Poc power supply module and system |
| CN107508556A (en) * | 2017-08-28 | 2017-12-22 | 河海大学 | A kind of DE classes frequency multiplier and design method |
| CN117411438A (en) * | 2023-12-13 | 2024-01-16 | 成都威频通讯技术有限公司 | Step diode Guan Ji frequency multiplier |
-
2011
- 2011-08-16 CN CN 201120297238 patent/CN202153722U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731276A (en) * | 2013-12-26 | 2014-04-16 | 朱向伟 | Poc power supply module and system |
| CN107508556A (en) * | 2017-08-28 | 2017-12-22 | 河海大学 | A kind of DE classes frequency multiplier and design method |
| CN117411438A (en) * | 2023-12-13 | 2024-01-16 | 成都威频通讯技术有限公司 | Step diode Guan Ji frequency multiplier |
| CN117411438B (en) * | 2023-12-13 | 2024-03-08 | 成都威频通讯技术有限公司 | Step diode Guan Ji frequency multiplier |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20180816 |
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| CF01 | Termination of patent right due to non-payment of annual fee |