CN203522649U - Low-phase noise signal generator with switch filter - Google Patents
Low-phase noise signal generator with switch filter Download PDFInfo
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- CN203522649U CN203522649U CN201320668989.4U CN201320668989U CN203522649U CN 203522649 U CN203522649 U CN 203522649U CN 201320668989 U CN201320668989 U CN 201320668989U CN 203522649 U CN203522649 U CN 203522649U
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Abstract
The utility model discloses a low-phase noise signal generator with a switch filter. The low-phase noise signal generator comprises a phase-locked loop circuit, a voltage-controlled oscillation circuit, a signal synthesis circuit, a switch capacitance filter and an amplification circuit, wherein the input of the phase-locked loop circuit is connected with a signal input terminal, the output of the phase-locked loop circuit is connected with the input of the voltage-controlled oscillation circuit through a loop filter circuit, the output of one path of the voltage-controlled oscillation circuit is connected with the phase-locked loop circuit through a feedback circuit, the output of the other path of the voltage-controlled oscillation circuit is connected with the input of a band pass filter through the signal synthesis circuit, the output of the band pass filter is connected with the input of the switch capacitance filter through the amplification circuit, and the output of the switch capacitance filter is connected with the signal output terminal. According to the utility model, the switch capacitance filter is utilized for directly processing simulation signals so that the circuit design is simplified and the system reliability is improved. The low-phase noise signal generator with the switch filter has the advantages of small size, low cost and the like.
Description
Technical field
The utility model relates to a kind of signal generation apparatus, particularly relates to a kind of Low Phase Noise Signal generator of belt switch filter.
Background technology
Signal generator is numerous electronic systems " heart " such as communication, radar, instrument, space electronic equipment, and its quality will directly affect the performance index of system.By its development course, divide, signal generator can be divided into that direct frequency synthesis, phase-locked indirect type frequency synthesis, Direct Digital are synthetic, fractional frequency is synthetic, hybrid frequency synthesis etc.At a high speed, low phase noise cancellation signal generator is the device of current Radar Technology field emphasis development, at present, the integrated level of signal generator is not high, resolution is low, and signal is not directly synthetic.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and the Low Phase Noise Signal generator of a kind of directly composite signal, belt switch filter that integrated level is high is provided.
The purpose of this utility model is achieved through the following technical solutions: the Low Phase Noise Signal generator of belt switch filter, it is by phase-locked loop circuit, Voltage-Controlled oscillation circuit, signal synthesis circuit, switching capacity filter and amplifying circuit form, the input of phase-locked loop circuit and signal input part sub-connection, the output of phase-locked loop circuit is connected with the input of Voltage-Controlled oscillation circuit by loop filtering circuit, the output of Voltage-Controlled oscillation circuit Yi road is connected with phase-locked loop circuit by feedback circuit, another road output of Voltage-Controlled oscillation circuit is connected with the input of band pass filter by signal synthesis circuit, the output of band pass filter is connected with the input of switching capacity filter by amplifying circuit, the output of switching capacity filter connects signal output terminal.
The beneficial effects of the utility model are: (1) switching capacity filter is Analog signals directly, and needn't as digital filter, need A/D, D/A conversion, have simplified circuit design, have improved the reliability of system; (2) directly composite signal and frequency resolution are high; (3) modularized design, integrated level is high, combines the advantage of digital-to-analogue power technology, obtains volume little, and cost is low.
Accompanying drawing explanation
Fig. 1 is the utility model circuit structure block diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further: as shown in Figure 1, the Low Phase Noise Signal generator of belt switch filter, it is by phase-locked loop circuit, Voltage-Controlled oscillation circuit, signal synthesis circuit, switching capacity filter and amplifying circuit form, the input of phase-locked loop circuit and signal input part sub-connection, the output of phase-locked loop circuit is connected with the input of Voltage-Controlled oscillation circuit by loop filtering circuit, the output of Voltage-Controlled oscillation circuit Yi road is connected with phase-locked loop circuit by feedback circuit, another road output of Voltage-Controlled oscillation circuit is connected with the input of band pass filter by signal synthesis circuit, the output of band pass filter is connected with the input of switching capacity filter by amplifying circuit, the output of switching capacity filter connects signal output terminal.
Claims (1)
1. the Low Phase Noise Signal generator of belt switch filter, it is characterized in that: it is by phase-locked loop circuit, Voltage-Controlled oscillation circuit, signal synthesis circuit, switching capacity filter and amplifying circuit form, the input of phase-locked loop circuit and signal input part sub-connection, the output of phase-locked loop circuit is connected with the input of Voltage-Controlled oscillation circuit by loop filtering circuit, the output of Voltage-Controlled oscillation circuit Yi road is connected with phase-locked loop circuit by feedback circuit, another road output of Voltage-Controlled oscillation circuit is connected with the input of band pass filter by signal synthesis circuit, the output of band pass filter is connected with the input of switching capacity filter by amplifying circuit, the output of switching capacity filter connects signal output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320668989.4U CN203522649U (en) | 2013-10-29 | 2013-10-29 | Low-phase noise signal generator with switch filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320668989.4U CN203522649U (en) | 2013-10-29 | 2013-10-29 | Low-phase noise signal generator with switch filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203522649U true CN203522649U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320668989.4U Expired - Lifetime CN203522649U (en) | 2013-10-29 | 2013-10-29 | Low-phase noise signal generator with switch filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN203522649U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395139A (en) * | 2017-06-21 | 2017-11-24 | 北方电子研究院安徽有限公司 | A kind of 90 ° of phase measurements switch IF amplifying assemble circuit |
| CN108233873A (en) * | 2016-12-22 | 2018-06-29 | 上海普锐马电子有限公司 | A kind of multi-channel noise simulation generator |
| CN114421893A (en) * | 2021-12-30 | 2022-04-29 | 北京无线电计量测试研究所 | System and method for measuring phase noise |
-
2013
- 2013-10-29 CN CN201320668989.4U patent/CN203522649U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233873A (en) * | 2016-12-22 | 2018-06-29 | 上海普锐马电子有限公司 | A kind of multi-channel noise simulation generator |
| CN107395139A (en) * | 2017-06-21 | 2017-11-24 | 北方电子研究院安徽有限公司 | A kind of 90 ° of phase measurements switch IF amplifying assemble circuit |
| CN114421893A (en) * | 2021-12-30 | 2022-04-29 | 北京无线电计量测试研究所 | System and method for measuring phase noise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
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| CX01 | Expiry of patent term |