CN2517173Y - Combined switch filtering, high-stability, low-noise, high-speed frequency synthesizer - Google Patents
Combined switch filtering, high-stability, low-noise, high-speed frequency synthesizer Download PDFInfo
- Publication number
- CN2517173Y CN2517173Y CN 01256987 CN01256987U CN2517173Y CN 2517173 Y CN2517173 Y CN 2517173Y CN 01256987 CN01256987 CN 01256987 CN 01256987 U CN01256987 U CN 01256987U CN 2517173 Y CN2517173 Y CN 2517173Y
- Authority
- CN
- China
- Prior art keywords
- signal
- amplifier
- filtering
- distributor
- frequency synthesizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
The utility model relates to a combined switch combiner of filtering, high stability, low noise, high-speed frequency, which uses a high-stability crystal oscillator, through organically combining with a comb-spectrum generator, a distributor, a filtering, amplification and further filtering link, a single-pole multi-throw switch, a final amplifier and a control circuit, composes a specific circuit combination. The utility model has the advantages of high stability, low phase noise, low clutter, multi-channel, achieving high-speed frequency switching and other outstanding performances.
Description
Technical field
The utility model belongs to the frequency synthesizer technical field, specifically is a kind of unit switch filtering, high steady, low noise, fast frequency synthesizer.
Technical background
In the prior art, frequency synthesizer mainly contains digital synthesizer, direct synthesizer, lock to synthesizer and composite type synthesizer etc.Every kind of synthesizer all has advantage, deficiency and different applications separately.
The weak point of digital synthesizer is: because it almost completely is digitized, so operating frequency is not high, and because the imperfection of D-A conversion can produce parasitic output, clutter is bigger.
Lock is generally all higher to the phase noise of synthesizer, also has a bigger problem in actual use, and promptly frequency switching time is longer, and difficult realization fast frequency switches.
The purpose of this utility model is at existing frequency synthesizer above shortcomings, design a kind of unit switch filtering, low noise, fast frequency synthesizer, it is high that it has stability, low phase noise, lower hybrid wave, multichannel and the advantage that can realize aspects such as fast frequency switching.
Summary of the invention
The filtering of this unit switch, high steady, low noise, fast frequency synthesizer have adopted the crystal oscillator of high stable, by pectination spectrum generator, tap into distributor, pass through the link that filter, amplifier and filter are formed again, and through repeating cascade, tap into single pole multiple throw again, after final amplifier amplifies the back output signal, control circuit is controlled the switching of switch, and provides interface for external system.Above-mentioned partial circuit organic assembling constituted a specific combination of circuits, realizes purpose of the present invention.
The function that above each several part is finished is:
1. highly stable crystal oscillator provides reference signal F for this synthesizer
0
2. pectination spectrum generator leads to generation reference signal F
0High order harmonic component: (n+1)
F
0, (n+2) F
0... (n+m) F
0, (n, m are integer); 3. distributor composes pectination to high order harmonic component signal (n+1) F that generator produces
0, (n+2) F
0... (n+m) F
0, distribute to filter F respectively
11, F
12... F
M1
4. filtering, amplification, filtering link " F again
11, A
11, F
12F
21, A
2, F
22... F
M1, A
M, F
M2", it is the passage that pectination spectrum generator produces the high order harmonic component signal, each group filter such as F
11, F
12F
21, F
22... F
M1, F
M2Performance identical, the amplifier in the link, i.e. A
1, A
2... A
MIt is loss for compensating filter.
5. but single pole multiple throw filters out to program the correspondent frequency signal from each group link, as: (n+1) F
0, (n+2) F
0Deng.
6. final amplifier obtains the signal of required output level.
7. in power supply and the control circuit, power supply provides required various power supplys for whole system, and control circuit realizes that fast frequency is comprehensive, simultaneously, provides the interface with external system.
Therefore, this frequency synthesizer has that stability is high, and phase noise is low, lower hybrid wave, multichannel and can realize excellent properties such as fast frequency switching.
Description of drawings
Fig. 1 is the circuit block diagram of this frequency synthesizer;
Fig. 2 is the circuit diagram of this frequency synthesizer.
Embodiment
Referring to Fig. 1, the circuit of this frequency synthesizer constitutes: the reference signal of high stability crystal oscillator connects into distributor by pectination spectrum generator, the output of distributor by the filtering of many groups, amplification, filtering link repetition stage connects again, taps into single pole multiple throw again, after the final amplifier output signal.Power supply and control circuit provide power supply for entire circuit and control.
Referring to Fig. 2, the circuit connecting relation of this frequency synthesizer is: oscillator OSC
1The output signal F that produces
0Through capacitor C
1Be connected to amplifier Q
1Base stage, signal F
0Through amplifier Q
1Pass through capacitor C after the amplification again
2Be connected to by inductance L
4, L
5, capacitor C
5With step recovery diode D
1On the pectination spectrum generator of forming.Behind pectination spectrum generator, the signal F that produces
0High order harmonic component, (n+1) F
0, (n+2) F
0... (n+m) F
0, again these harmonic signals are connected to by inductance L
1, L
2... L
MOn the distributor of forming with resistance R 4.Filter F
11, F
21... F
M1Input be connected respectively on the node of distributor correspondence.Through filter F
11, F
21... F
M1Signal tap into corresponding amplifier A respectively
1, A
21... A
M1On.Be connected respectively to corresponding filter F again through the signal after the amplifier amplification
12, F
22... F
M2Input.Be connected respectively to single pole multiple throw U again through filtered signal
1Input.Single pole multiple throw U
1On signal by control circuit required signal is taken out, be connected to final amplifier A
0Input, signal amplifies the back through final amplifier and exports.
Claims (2)
1. unit switch filtering, high steady, low noise, fast frequency synthesizer, after it is characterized in that it provides reference signal and connected pectination spectrum generator by high stability crystal oscillator, its output connects distributor, distributor repeats cascade filtering, amplification, filtering link more again, output signal taps into single pole multiple throw again, exports after connecing final amplifier at last.
2. unit switch filtering according to claim 1, high steady, low noise, fast frequency synthesizer is characterized in that oscillator OSC
1The output signal F that produces
0Through capacitor C
1Be connected to amplifier Q
1Base stage, signal F
0Through amplifier Q
1Pass through capacitor C after the amplification again
2Be connected to by inductance L
4, L
5, capacitor C
5With step recovery diode D
1On the pectination spectrum generator of forming; Pectination spectrum generator produces signal F
0High order harmonic component, be connected to by inductance L
1, L
2... L
MAnd resistance R
4On the distributor of forming; Filter F
11, F
21... .., F
M1Input be connected respectively on the corresponding node of distributor; Its output taps into corresponding amplifier A
1, A
21... A
M1On, insert filter F again
12, F
22... F
M2Tap into single pole multiple throw U more respectively
1Input; Single pole multiple throw U
1On signal by control circuit required signal is taken out, be connected to final amplifier A
0Input, final output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01256987 CN2517173Y (en) | 2001-12-19 | 2001-12-19 | Combined switch filtering, high-stability, low-noise, high-speed frequency synthesizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01256987 CN2517173Y (en) | 2001-12-19 | 2001-12-19 | Combined switch filtering, high-stability, low-noise, high-speed frequency synthesizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2517173Y true CN2517173Y (en) | 2002-10-16 |
Family
ID=33665843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01256987 Expired - Fee Related CN2517173Y (en) | 2001-12-19 | 2001-12-19 | Combined switch filtering, high-stability, low-noise, high-speed frequency synthesizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2517173Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113126035A (en) * | 2021-04-20 | 2021-07-16 | 核工业西南物理研究院 | Multichannel microwave detector based on comb spectrum frequency conversion |
-
2001
- 2001-12-19 CN CN 01256987 patent/CN2517173Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113126035A (en) * | 2021-04-20 | 2021-07-16 | 核工业西南物理研究院 | Multichannel microwave detector based on comb spectrum frequency conversion |
| CN113126035B (en) * | 2021-04-20 | 2024-01-23 | 核工业西南物理研究院 | Multichannel microwave detector based on comb spectrum frequency conversion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |