CN205584176U - Miniaturized broadband frequency -agile radar local oscillator frequency combiner circuit - Google Patents
Miniaturized broadband frequency -agile radar local oscillator frequency combiner circuit Download PDFInfo
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- CN205584176U CN205584176U CN201521009674.4U CN201521009674U CN205584176U CN 205584176 U CN205584176 U CN 205584176U CN 201521009674 U CN201521009674 U CN 201521009674U CN 205584176 U CN205584176 U CN 205584176U
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- frequency
- phase
- combiner circuit
- phase discriminator
- voltage controlled
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- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
The utility model provides a miniaturized broadband frequency -agile radar local oscillator frequency combiner circuit, including phase discriminator [ 1 ], loop filter [ 2 ], voltage controlled oscillator [ 3 ], CPLD [ 4 ] and frequency divider [ 5 ], the mirror looks error of phase discriminator [ 1 ] output adds through loop filter [ 2 ] and arrives voltage controlled oscillator [ 3 ], produces two way output signal, does all the way the final output signal of combiner circuit, another way gets into frequency divider [ 5 ] frequency division, then gets into phase discriminator [ 1 ] the looks of reflecting. The utility model discloses can reduce the synthetic volume of local oscillator frequency greatly, reduce consumption and weight, satisfy the radar simultaneously to the frequency hopping interval of local oscillator signal, frequency hopping time, phase noise, index requirement such as stray.
Description
Technical field
This utility model belongs to the local frequency synthetic technology in the design of radar frequency origin system, is specifically related to one
Plant minimized wide-band frequency-agile radar local frequency combiner circuit.
Background technology
In the design and application of source, local oscillation signal both for launching the synthesis of signal, was used for again
Down coversion is carried out with receiving target echo.The available circuit of radar wide interval frequency hopping local oscillator synthesis is generally in the form of many
Down coversion in frequency marking phaselocked loop, also comprises power splitter [6], harmonic oscillator [10], micro-in addition to phase-locked loop circuit
The circuit (seeing accompanying drawing 2) such as ripple switch [11], low pass filter [12], frequency mixer [13], amplifier [14],
External reference source is divided into two-way through power splitter [6], and a road enters the input 1 of phase-locked loop intergrated circuit [7] and carries out
Frequency dividing and phase demodulation, another road enters harmonic oscillator [10] and produces four tunnel frequency markings, and it is selected by microwave switch [11]
In signal down coversion, low-pass filtered device in frequency mixer [13] produced by a road and voltage controlled oscillator [9]
[12], after filtering and amplifier [14] amplify, the input 2 entering phase-locked loop intergrated circuit [7] divides and reflects
Phase.This circuit can synthesize a width of 4GHz of frequency hopping band equally, and stepped-frequency interval is the local oscillation signal of 10MHz, but
Volume compared with big, power consumption is more, heavier-weight, it is difficult to meet modern radar to frequency source miniaturization, modularity,
Standardized requirement.
Utility model content
The deficiency existed for prior art, the utility model proposes a kind of miniaturization Radar Local-oscillator frequency
Synthetic technology, can be substantially reduced the volume of local frequency synthesis, reduces power consumption and weight, meets radar simultaneously
To the stepped-frequency interval of local oscillation signal, Hopping time, phase noise, the index request such as spuious.
In view of the problems referred to above of prior art, according to disclosed in this utility model aspect, this practicality is new
Type is by the following technical solutions:
A kind of minimized wide-band frequency-agile radar local frequency combiner circuit, including phase discriminator [1], loop filter
[2], voltage controlled oscillator [3], CPLD [4] and frequency divider [5], it is characterised in that:
The shield shell volume of described combiner circuit is 50mm × 50mm × 9.5mm, the phase demodulation frequency of phase discriminator [1]
Rate is 100MHz, and phase discriminator [1] reference input is the external reference provided by height steady Low phase noise constant-temperature crystal oscillator
Source, the phase demodulation error that phase discriminator [1] exports is added to the voltage-controlled end of voltage controlled oscillator [3] through loop filter [2],
Voltage controlled oscillator [3] produces two-way output signal, and a road is the final output signal of described combiner circuit, another
Road enter frequency divider [5], frequency divider [5] under the control of CPLD [4] the output signal fractional frequency division on another road
To 100MHz, it is achieved the stepped-frequency interval of 10MHz, 11.1MHz, 12.5MHz frequency, subsequently into phase discriminator [1]
VCO input and external reference source carry out phase demodulation.
The local oscillation signal a width of 4GHz of frequency hopping band of this utility model synthesis, stepped-frequency interval is 10MHz, arbitrarily
In the range of 500MHz, Hopping time is less than 50uS, and phase noise is less than in the range of deviation carrier frequency 1KHz～1MHz
-100dBc/Hz, phase demodulation leakage is less than-65dBc with spuious.
This utility model can be substantially reduced the volume of local frequency synthesis, reduces power consumption and weight, meets simultaneously
Radar is to the stepped-frequency interval of local oscillation signal, Hopping time, phase noise, the index request such as spuious.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of this utility model a kind of minimized wide-band frequency-agile radar local frequency combiner circuit.
Fig. 2 is radar wide interval frequency hopping local oscillator combiner circuit schematic diagram in prior art.
Detailed description of the invention
Below in conjunction with embodiment, this utility model is described in further detail, but enforcement of the present utility model
Mode is not limited to this.
Seeing accompanying drawing 1, minimized wide-band frequency-agile radar local frequency combiner circuit of the present utility model, including mirror
Phase device [1], loop filter [2], voltage controlled oscillator [3], CPLD [4], frequency divider [5], it is characterised in that
The volume of the shield shell of combiner circuit is 50mm × 50mm × 9.5mm, and the phase demodulation frequency of phase discriminator [1] is
100MHz, its reference input is the external reference source provided by height steady Low phase noise constant-temperature crystal oscillator, phase discriminator [1]
The phase demodulation error of output is added to the voltage-controlled end of voltage controlled oscillator [3], voltage controlled oscillator [3] through loop filter [2]
Producing two-way output signal, a road is the final output signal of combiner circuit, and another road enters frequency divider [5],
Frequency divider [5] under the control of CPLD [4] the output signal fractional frequency division on another road to 100MHz, it is achieved
The stepped-frequency interval of 10MHz, 11.1MHz, 12.5MHz frequency, subsequently into the VCO input of phase discriminator [1]
Phase demodulation is carried out with external reference source.
The local oscillation signal a width of 4GHz of frequency hopping band of this utility model synthesis, stepped-frequency interval is 10MHz, arbitrarily
In the range of 500MHz, Hopping time is less than 50uS, and phase noise is low in the range of deviation carrier frequency 1KHz～1MHz
In-100dBc/Hz, phase demodulation leakage is less than-65dBc with spuious.
Embodiment 1, for minimized wide-band frequency-agile radar local frequency combiner circuit of the present utility model, uses
Phase discriminator [1] HMC439, amplifier AD797 in loop filter [2], voltage controlled oscillator [3] HMC588,
CPLD [4] LCMXO2-256HC, frequency divider [5] UXN14M9P.It is spaced 12.5MHz in the range of can realizing 4GHz
Frequency hopping.
Embodiment 2, for minimized wide-band frequency-agile radar local frequency combiner circuit of the present utility model, uses
Phase discriminator [1] HMC439, amplifier AD797 in loop filter [2], voltage controlled oscillator [3] HMC732,
CPLD [4] LCMXO2-256HC, frequency divider [5] UXN14M9P.It is spaced 10MHz in the range of can realizing 6GHz
Frequency hopping.
Claims (1)
1. a minimized wide-band frequency-agile radar local frequency combiner circuit, including phase discriminator [1], loop filter [2], voltage controlled oscillator [3], CPLD [4] and frequency divider [5], it is characterised in that:
nullThe shield shell volume of described combiner circuit is 50mm × 50mm × 9.5mm，The phase demodulation frequency of phase discriminator [1] is 100MHz，Phase discriminator [1] reference input is the external reference source provided by height steady Low phase noise constant-temperature crystal oscillator，The phase demodulation error that phase discriminator [1] exports is added to the voltage-controlled end of voltage controlled oscillator [3] through loop filter [2]，Voltage controlled oscillator [3] produces two-way output signal，One tunnel is the final output signal of described combiner circuit，Another road enters frequency divider [5]，Frequency divider [5] under the control of CPLD [4] the output signal fractional frequency division on another road to 100MHz，Realize 10MHz，11.1MHz，The stepped-frequency interval of 12.5MHz frequency，VCO input and external reference source subsequently into phase discriminator [1] carry out phase demodulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009674.4U CN205584176U (en) | 2015-12-08 | 2015-12-08 | Miniaturized broadband frequency -agile radar local oscillator frequency combiner circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009674.4U CN205584176U (en) | 2015-12-08 | 2015-12-08 | Miniaturized broadband frequency -agile radar local oscillator frequency combiner circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205584176U true CN205584176U (en) | 2016-09-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521009674.4U Expired - Fee Related CN205584176U (en) | 2015-12-08 | 2015-12-08 | Miniaturized broadband frequency -agile radar local oscillator frequency combiner circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205584176U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788506A (en) * | 2016-11-30 | 2017-05-31 | 北京振兴计量测试研究所 | A kind of broadband integration reconnaissance receiver and its method of work |
| CN106992762A (en) * | 2017-02-22 | 2017-07-28 | 加特兰微电子科技(上海)有限公司 | Amplifier and its control method and signal processing system |
-
2015
- 2015-12-08 CN CN201521009674.4U patent/CN205584176U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788506A (en) * | 2016-11-30 | 2017-05-31 | 北京振兴计量测试研究所 | A kind of broadband integration reconnaissance receiver and its method of work |
| CN106788506B (en) * | 2016-11-30 | 2019-07-12 | 北京振兴计量测试研究所 | A kind of broadband integration reconnaissance receiver and its working method |
| CN106992762A (en) * | 2017-02-22 | 2017-07-28 | 加特兰微电子科技(上海)有限公司 | Amplifier and its control method and signal processing system |
| CN106992762B (en) * | 2017-02-22 | 2019-10-15 | 加特兰微电子科技(上海)有限公司 | Amplifier and its control method and signal processing system |
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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 |
Granted publication date: 20160914 Termination date: 20211208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |