CN204906361U - Dot frequency phase locked source - Google Patents
Dot frequency phase locked source Download PDFInfo
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- CN204906361U CN204906361U CN201520563253.XU CN201520563253U CN204906361U CN 204906361 U CN204906361 U CN 204906361U CN 201520563253 U CN201520563253 U CN 201520563253U CN 204906361 U CN204906361 U CN 204906361U
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- phase
- phase locked
- locked source
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Abstract
The utility model discloses a dot frequency phase locked source, it includes phase discriminator, voltage controlled oscillator and the low pass filter who establishes ties in proper order, and the signal input part of phase discriminator and the reference signal input part of this phase locked source are connected, and low pass filter's the signal output part and the benchmark signal output part of this phase locked source are connected, and the phase discriminator still is connected with the singlechip. The utility model has the characteristics of simple structure, small, light in weight, integrated level height, simple to operate etc, external input's reference signal sends into the phase discriminator through the post -filter, carries out configuration control to the phase discriminator internal register through the singlechip, and the control phase -locked loop is under reference signal's effect, and the phase locking obtains the high performance fundamental wave signal with reference signal phase place coherent, and this base mark signal is through the output of low pass filter post -filter.
Description
Technical field
A kind of dot frequency phase locked source of the utility model.
Background technology
Local vibration source is the basic microwave energy of all microwave systems (as radar, communication, navigation etc.).Mainly comprise fixed oscillator (point is oscillation source frequently) and Microwave Frequency Synthesizer two series products.This product adopts PHASE-LOCKED LOOP PLL TECHNIQUE to obtain the features such as high stability, miniaturization, low phase noise output signal, and is widely used as local oscillator in communication system and radar system.
Existing miniaturized frequency source generally deposits not high, spuious comparatively large, the more high factor of cost of local vibration source phase noise, or volume is comparatively large, is unfavorable for whole machine installation.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of dot frequency phase locked source, has that structure is simple, volume is little, integrated level high.
The purpose of this utility model is achieved through the following technical solutions: a kind of dot frequency phase locked source, it comprises phase discriminator, voltage controlled oscillator and the low pass filter of connecting successively, the signal input part of phase discriminator is connected with the reference signal input of this phase locked source, the signal output part of low pass filter is connected with the reference signal output of this phase locked source, and phase discriminator is also connected with single-chip microcomputer.
Described single-chip microcomputer comprises C8051F300 chip.
Described voltage controlled oscillator comprises low noise transistor 2SC3356 and bb644 variable capacitance diode.
The geometric parameter of this phase locked source is 20mm × 15mm × 4mm.
The beneficial effects of the utility model are:
1) in the utility model, the reference signal of outside input sends into phase discriminator after filtering, by single-chip microcomputer, control is configured to phase discriminator internal register, control phase-locked loop under the effect of reference signal, phase-lockedly obtain the high-performance fundamental signal with reference signal phase place coherent, this reference signal exports after low pass filter filtering.
2) this phase locked source has the features such as structure is simple, volume is little, lightweight, integrated level is high, easy for installation.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model dot frequency phase locked source.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection range of the present utility model is not limited to the following stated.
As shown in Figure 1, a kind of dot frequency phase locked source, it comprises phase discriminator, voltage controlled oscillator and the low pass filter of connecting successively, the signal input part of phase discriminator is connected with the reference signal input of this phase locked source, the signal output part of low pass filter is connected with the reference signal output of this phase locked source, and phase discriminator is also connected with single-chip microcomputer.
Described single-chip microcomputer comprises C8051F300 chip.
Described voltage controlled oscillator comprises low noise transistor 2SC3356 and bb644 variable capacitance diode.
The geometric parameter of this phase locked source is 20mm × 15mm × 4mm.
The phase locked source that the utility model proposes is 297.1MHz point phase locked source frequently, and volume is very little, generally accomplishes 20mm × 15mm × 4mm, and control section adopts single-chip microcomputer, completes the control to phase-lock section, realizes high performance fundamental signal and exports.The phase-locked signal obtained after filtering after, realize the stable signal of high-performance and export.
In the utility model, the 100MHz reference signal of outside input sends into phase discriminator after filtering, phase discriminator is as part and parcel in phase-locked loop, by single-chip microcomputer, control is configured to phase discriminator internal register, control phase-locked loop under the effect of 100MHz reference signal, phase-lockedly obtain the high-performance fundamental signal with 100MHz reference signal phase place coherent, this reference signal exports after filtering afterwards.
Wherein, C8051F300 chip selected by single-chip microcomputer, and its power consumption is the requirement that 5V/25mA meets low-power consumption, and volume is very little, meets higher phase noise requirements 10210KHz, 125100KHz, reference signal 100MHz.Require high because frequency source is made an uproar mutually, can select the voltage controlled oscillator of low noise transistor 2SC3356, the variable capacitance diode of this voltage controlled oscillator can select bb644 device, and the electric current of whole voltage controlled oscillator is about 20mA, and power output is 5dBm.Low pass filter in the utility model is in order to filtering harmonic wave.
This phase locked source has the features such as structure is simple, volume is little, lightweight, integrated level is high, easy for installation.The utility model can realize following technical indicator:
1, output frequency: 297.1MHz.
2, power output: >=-3dBm.
3, harmonics restraint :≤-15dBc(normal temperature is tested).
4, clutter recognition :≤-70dBc(normal temperature is tested).
5, phase noise :≤-102dBc/Hz10kHz(normal temperature is tested);
≤-125dBc/Hz100kHz(designs guarantee).
6, operating voltage 1:+5V.
7, operating current 1 :≤25mA.
8, operating voltage 2:+5V.
9, operating current 2 :≤30mA.
10, lock-in detection: LockMin2.7VUnlock0.4VMax(normal temperature is tested).
11, reference frequency: 100MHz(test condition).
12, reference power: >=+3dBm(test condition).
13, with reference to making an uproar mutually :≤-140dBc/Hz1kHz(test condition).
Claims (4)
1. dot frequency phase locked source, it is characterized in that: it comprises phase discriminator, voltage controlled oscillator and the low pass filter of connecting successively, the signal input part of phase discriminator is connected with the reference signal input of this phase locked source, the signal output part of low pass filter is connected with the reference signal output of this phase locked source, and phase discriminator is also connected with single-chip microcomputer.
2. dot frequency phase locked source according to claim 1, is characterized in that: described single-chip microcomputer comprises C8051F300 chip.
3. dot frequency phase locked source according to claim 1, is characterized in that: described voltage controlled oscillator comprises low noise transistor 2SC3356 and bb644 variable capacitance diode.
4. dot frequency phase locked source according to claim 1, is characterized in that: the geometric parameter of this phase locked source is 20mm × 15mm × 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520563253.XU CN204906361U (en) | 2015-07-30 | 2015-07-30 | Dot frequency phase locked source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520563253.XU CN204906361U (en) | 2015-07-30 | 2015-07-30 | Dot frequency phase locked source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204906361U true CN204906361U (en) | 2015-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520563253.XU Expired - Fee Related CN204906361U (en) | 2015-07-30 | 2015-07-30 | Dot frequency phase locked source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204906361U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611759A (en) * | 2017-10-13 | 2018-01-19 | 中国科学院上海应用物理研究所 | A kind of laser phase-locking device and method |
-
2015
- 2015-07-30 CN CN201520563253.XU patent/CN204906361U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611759A (en) * | 2017-10-13 | 2018-01-19 | 中国科学院上海应用物理研究所 | A kind of laser phase-locking device and method |
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20180730 |