CN202043072U - Frequency multiplier - Google Patents
Frequency multiplier Download PDFInfo
- Publication number
- CN202043072U CN202043072U CN2011200502989U CN201120050298U CN202043072U CN 202043072 U CN202043072 U CN 202043072U CN 2011200502989 U CN2011200502989 U CN 2011200502989U CN 201120050298 U CN201120050298 U CN 201120050298U CN 202043072 U CN202043072 U CN 202043072U
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- frequency
- diode
- band
- pass filter
- signal
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Abstract
The utility model relates to a frequency multiplier which comprises amplifiers, a diode and band-pass filters that are sequentially cascaded; and behind one band-pass filter, one amplifier and one band-pass filter are sequentially connected in series again. In the frequency multiplier, by utilizing the nonlinear property of the diode, a plurality of higher harmonic components of an input frequency are generated when a signal passes the diode; the required harmonic component is taken out with the appropriate band-pass filter; and after the required harmonic component is amplified by the amplifiers, the required frequency multiplication signal can be obtained. The frequency multiplier has stronger generality; and the output frequency multiplication signal has high stability and can be used as an external frequency source for other modules.
Description
Technical field
The utility model relates to a kind of frequency multiplier, belongs to electronic information technical field.
Background technology
In fields such as radar, communications, its equipment often needs an external frequency source that operating frequency is higher, and to the stability requirement strictness of frequency.General LC oscillator can't meet the demands.If adopt lower but the crystal oscillator that stability is high of frequency to produce high order harmonic component, pass through processing such as filtering, amplification again, then can obtain comparatively stable high-frequency oscillation signal by nonlinear circuit.
The utility model content
Problem to be solved in the utility model is to provide a kind of frequency multiplier, will be converted into high-frequency signal from the low frequency signal of high stable crystal oscillator output.By changing the passband of filter, can finish the frequency multiplication requirement of each frequency range.
The utility model utilizes the nonlinear characteristic of diode, produces the higher harmonic components of a plurality of incoming frequencies, takes out required harmonic component with band pass filter, after amplifying through amplifier, can obtain required frequency-doubled signal.
The technical solution of the utility model is:
A kind of frequency multiplier comprises amplifier, diode and the band pass filter of cascade successively.
In the above-mentioned frequency multiplier, in order to reduce multiple harmonic after the diode frequency multiplication to the influence of prime, needing has isolation preferably between diode and the front stage circuits.In the utility model, before diode, all use an amplifier that the high isolation degree is arranged, both realized the amplification of signal, played buffer action again.Signal owing to the nonlinear characteristic of diode, has produced the high order harmonic component of a plurality of input signals through behind the diode.
Suppress limited in one's ability because the band of single filter is outer, the power of clutter frequency component is still bigger after the filtering, need promptly can obtain comparatively pure frequency-doubled signal again through once amplifying and filtering.
So as a kind of preferred, further scheme is connect successively after band pass filter amplifier and band pass filter again.
Frequency-doubled signal is taken from the high order harmonic component of input signal through producing behind the diode, and harmonic number is as far as possible less than 8 times, otherwise the signal after the frequency multiplication may emergent power intensity instability, spuious phenomenon such as more.As the need high order frequency, frequency multiplication, filtering, the amplification successively of then available a plurality of diodes obtains required frequency.
The utility model is realized frequency multiplication based on the nonlinear characteristic of diode.Whole project organization is succinct, selects different band pass filters, can finish the frequency multiplication requirement of different frequency range and frequency multiplication number of times, thereby has stronger versatility.The frequency-doubled signal stability of frequency multiplier output is high in addition, and the external frequency source that can be used as other modules uses.
Description of drawings
Fig. 1 is the circuit block diagram of frequency multiplier.
Fig. 2 is the circuit theory diagrams of 10M to the 40M frequency multiplication.
Fig. 3 is the circuit theory diagrams of 40M to the 240M frequency multiplication.
Embodiment
A kind of frequency multiplier comprises amplifier, diode and the band pass filter of cascade successively.
Suppress limited in one's ability because the band of single filter is outer, the power of clutter frequency component is still bigger after the filtering, and further scheme is connect successively after band pass filter amplifier and band pass filter again.As shown in Figure 1.
Below be example with 10M to the frequency multiplication process of 240M, come the utility model is described in further detail.
Referring to Fig. 2, be first order frequency multiplier circuit of the present utility model, realize that signal is by the double frequency function of 10M to 40M.The 1dB compression point that surpasses amplifier for anti-stop signal, can before first order amplifier, use the suitable resistance attenuation network, be amplified between the 10dB to 16dB through amplifier after the signal attenuation, by behind the diode HSMP3860, signal produces higher harmonic components (10M, 20M then, 30M, 40M), with the band-pass filter of centre frequency 40M, can take out the 40M harmonic component.Suppress limited in one's ability because the band of single filter is outer, the power of clutter frequency component is still bigger after the filtering, need promptly can obtain comparatively pure 40M signal again through once amplifying and filtering.
Referring to Fig. 3, be the second level of the present utility model frequency multiplier circuit, realize that signal is by the double frequency function of 40M to 240M.Pass through diode behind the 40M signal process amplifier, and the generation higher harmonic components (40M, 80M, 120M, 1600M, 200M), through the 240M band-pass filter.Because different system has different requirements to the frequency source power output, level is amplified use variable gain amplifier AD8367 behind the frequency multiplier, amplifies through a filtering to obtain required 240M frequency-doubled signal again.In actual applications, also can be after final amplifier, the access power distributor can obtain the frequency-doubled signal of a plurality of homophases.
Claims (2)
1. a frequency multiplier is characterized in that: the amplifier, diode and the band pass filter that comprise cascade successively.
2. frequency multiplier as claimed in claim 1 is characterized in that: connect successively after band pass filter amplifier and band pass filter again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200502989U CN202043072U (en) | 2011-03-01 | 2011-03-01 | Frequency multiplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200502989U CN202043072U (en) | 2011-03-01 | 2011-03-01 | Frequency multiplier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202043072U true CN202043072U (en) | 2011-11-16 |
Family
ID=44970497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200502989U Expired - Fee Related CN202043072U (en) | 2011-03-01 | 2011-03-01 | Frequency multiplier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202043072U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684604A (en) * | 2012-05-18 | 2012-09-19 | 苏州慧飞信息科技有限公司 | Signal modulation frequency multiplier |
| CN102904528A (en) * | 2012-10-11 | 2013-01-30 | 胡延安 | Terahertz quasi-optical frequency multiplier |
| CN102938641A (en) * | 2012-11-28 | 2013-02-20 | 北京中讯四方科技股份有限公司 | Comb spectrum generator |
| JP2019501395A (en) * | 2016-01-07 | 2019-01-17 | ブライトスペック，インコーポレイテッド | Method and apparatus for direct multiplication Fourier transform millimeter wave spectroscopy |
| CN113472293A (en) * | 2021-05-21 | 2021-10-01 | 航天恒星科技有限公司 | Low-phase noise quadruple frequency clock generation method and circuit for aerospace navigation |
-
2011
- 2011-03-01 CN CN2011200502989U patent/CN202043072U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684604A (en) * | 2012-05-18 | 2012-09-19 | 苏州慧飞信息科技有限公司 | Signal modulation frequency multiplier |
| CN102904528A (en) * | 2012-10-11 | 2013-01-30 | 胡延安 | Terahertz quasi-optical frequency multiplier |
| CN102904528B (en) * | 2012-10-11 | 2015-12-02 | 胡延安 | Terahertz quasi-optical frequency multiplier |
| CN102938641A (en) * | 2012-11-28 | 2013-02-20 | 北京中讯四方科技股份有限公司 | Comb spectrum generator |
| JP2019501395A (en) * | 2016-01-07 | 2019-01-17 | ブライトスペック，インコーポレイテッド | Method and apparatus for direct multiplication Fourier transform millimeter wave spectroscopy |
| US11029261B2 (en) | 2016-01-07 | 2021-06-08 | Brightspec, Inc. | Methods and apparatus for direct multiplication Fourier transform millimeter wave spectroscopy |
| JP7045318B2 (en) | 2016-01-07 | 2022-03-31 | ブライトスペック，インコーポレイテッド | Directly Multiplied Fourier Transform Millimeter Wave Spectroscopy Methods and Devices |
| CN113472293A (en) * | 2021-05-21 | 2021-10-01 | 航天恒星科技有限公司 | Low-phase noise quadruple frequency clock generation method and circuit for aerospace navigation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20120301 |