CN105306091B - Crystal oscillation fractional frequency circuit for radio general measuring instrument RF local oscillator circuit - Google Patents
Crystal oscillation fractional frequency circuit for radio general measuring instrument RF local oscillator circuit Download PDFInfo
- Publication number
- CN105306091B CN105306091B CN201510772645.1A CN201510772645A CN105306091B CN 105306091 B CN105306091 B CN 105306091B CN 201510772645 A CN201510772645 A CN 201510772645A CN 105306091 B CN105306091 B CN 105306091B
- Authority
- CN
- China
- Prior art keywords
- circuit
- measuring instrument
- general measuring
- frequency
- clock buffer
- 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.)
- Active
Links
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Transceivers (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
Disclosed by the invention is a kind of crystal oscillation fractional frequency circuit for radio general measuring instrument RF local oscillator circuit, including sequentially connected DAC tuning voltage module, crystal oscillator and clock buffer circuit；The DAC tuning voltage module is used to provide power supply for crystal oscillator, and the crystal oscillator is for generating reference signal；The clock buffer circuit is used to according to the reference signal received be respectively that local oscillator generation circuit, general measuring instrument radio-frequency module frequency mixer and general measuring instrument signal processing module provide phase demodulation reference signal.This circuit can be to provide a variety of local oscillation signals, so that comprehensive tester can be realized simultaneously the measurement of multiple functions for held radio comprehensive tester RF local oscillator circuit.
Description
Technical field
The present invention relates to the reception of radio communication and transmissions, more particularly to a kind of to be used for radio general measuring instrument radio frequency
The crystal oscillation fractional frequency circuit of local oscillation circuit.
Background technology
Single test, an instrument is used only to be measured to a few functions in communication device field test instrument at present,
The measurement of multiple functions is can not achieve, therefore its RF local oscillator circuit used can only also realize a kind of output of frequency mostly.
Invention content
The purpose of the present invention is the radio frequency electrical of a variety of internal local oscillation signals is provided for a kind of held radio comprehensive tester
Road, so that comprehensive tester can be realized simultaneously the measurement of multiple functions.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes：
A kind of crystal oscillation fractional frequency circuit for radio general measuring instrument RF local oscillator circuit, including sequentially connected DAC
Tuning voltage module, crystal oscillator and clock buffer circuit；The DAC tuning voltage module for crystal oscillator for providing
Power supply, the crystal oscillator is for generating reference signal；The clock buffer circuit is used for according to the benchmark received
Reference signal is respectively that local oscillation circuit, general measuring instrument radio-frequency module frequency mixer and general measuring instrument signal processing module provide mirror
Phase reference signal.
Further, the crystal oscillator generates 80MHz reference signals.
Further, the crystal oscillation fractional frequency circuit includes two and the clock buffer circuit that connects, it is described two and connect when
Clock buffer circuit is respectively 4 road local oscillation circuits, general measuring instrument radio-frequency module frequency mixer and general measuring instrument signal processing module
Phase demodulation reference signal is provided.
Further, per road, output is both provided with a low-pass filter circuit to the clock buffer circuit.
Further, a reversed gate circuit is provided between the crystal oscillator and the clock buffer circuit.
Crystal oscillation fractional frequency circuit provided by the invention is used in a radio general measuring instrument RF local oscillator circuit, the radio frequency
Local oscillation circuit includes power supply processing module, control module, point frequency synthesis module, wideband generation module and crystal oscillator provided by the invention
Frequency dividing circuit；The crystal oscillation fractional frequency circuit is given birth to the power supply processing module, control module, point frequency synthesis module, wideband respectively
It is connected at module；The power supply processing module is used to provide power supply for RF local oscillator circuit；The control module is penetrated for controlling
Frequency local oscillation circuit generates suitable local oscillation signal；The crystal oscillation fractional frequency circuit is for generating reference signal；The point frequency closes
At module for synthesizing point-frequency signal and exporting；The wideband generation module is for generating broadband signal and exporting.
Further, the point frequency synthesis module includes 1520MHz spot-frequency local oscillations output circuit and 1600MHz spot-frequency local oscillations
Output circuit.
Further, the wideband generation module include 1691MHz-2991MHz wideband local oscillator output circuits and
1690.7MHz-2990.7MHz wideband local oscillator output circuits.
Compared with prior art, beneficial effects of the present invention：It is carried for held radio comprehensive tester RF local oscillator circuit
For a variety of local oscillation signals, so that comprehensive tester can be realized simultaneously the measurement of multiple functions.
Description of the drawings：
Fig. 1 is crystal oscillation fractional frequency electrical block diagram in the embodiment of the present invention.
Fig. 2 is DAC tuning voltage module circuit diagrams.
Fig. 3 is crystal oscillator and clock buffer circuit circuit diagram.
Fig. 4 is low-pass filter circuit circuit diagram.
Fig. 5 is RF local oscillator circuit overall structure block diagram.
Specific implementation mode
With reference to test example and specific implementation mode, the present invention is described in further detail.But this should not be understood
It is only limitted to embodiment below for the range of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that the content of present invention is realized
The range of invention.
Embodiment 1：As shown in Figures 1 to 4, the present embodiment provides one kind for radio general measuring instrument RF local oscillator electricity
The crystal oscillation fractional frequency circuit on road, including sequentially connected DAC tuning voltage module 1, crystal oscillator 2 and two and the clock that connects it is slow
Rush circuit 3；The DAC tuning voltage module 1 is used to provide power supply for crystal oscillator 2, and the crystal oscillator 2 is for generating
Reference signal；The clock buffer circuit 3 be used for according to the reference signal that receives be respectively 4 road local oscillation circuits,
General measuring instrument radio-frequency module frequency mixer and general measuring instrument signal processing module provide phase demodulation reference signal；Wherein, such as Fig. 3 institutes
Show, output port a1, output port a2, output port a3, the output port a4 of shown clock buffer circuit are 4 road local oscillation circuits
Export phase demodulation reference signal；Output port c is general measuring instrument radio-frequency module（Rf board）Frequency mixer exports local oscillation signal；Output
Port b provides reference signal for general measuring instrument signal processing module.
Further, the crystal oscillator 2 generates 80MHz reference signals.
Further, per road, output is both provided with just like low-pass filter circuit shown in Fig. 4 the clock buffer circuit 3.
Further, a reversed gate circuit N15 is provided between the crystal oscillator 2 and the clock buffer circuit 3.
Crystal oscillation fractional frequency circuit provided by the invention is used in radio general measuring instrument RF local oscillator circuit as shown in Figure 5
In, the RF local oscillator circuit includes power supply processing module, control module, point frequency synthesis module, wideband generation module and this hair
The crystal oscillation fractional frequency circuit of bright offer；The crystal oscillation fractional frequency circuit is synthesized with the power supply processing module, control module, point frequency respectively
Module, the connection of wideband generation module；The power supply processing module is used to provide power supply for RF local oscillator circuit；The control module
Suitable local oscillation signal is generated for controlling RF local oscillator circuit；The crystal oscillation fractional frequency circuit is for generating reference signal；
The point frequency synthesis module is for synthesizing point-frequency signal and exporting；The wideband generation module is for generating broadband signal and defeated
Go out.
Further, the point frequency synthesis module includes 1520MHz spot-frequency local oscillations output circuit and 1600MHz spot-frequency local oscillations
Output circuit.
Further, the wideband generation module include 1691MHz-2991MHz wideband local oscillator output circuits and
1690.7MHz-2990.7MHz wideband local oscillator output circuits.
Claims (1)
1. a kind of crystal oscillation fractional frequency circuit for radio general measuring instrument RF local oscillator circuit, which is characterized in that including successively
DAC tuning voltage module, crystal oscillator and the clock buffer circuit of connection；The DAC tuning voltage module is used to be crystal
Oscillator provides power supply, and the crystal oscillator is for generating reference signal；The clock buffer circuit is used for basis and connects
The reference signal received is respectively local oscillation circuit, general measuring instrument radio-frequency module frequency mixer and general measuring instrument signal processing
Module provides phase demodulation reference signal；
The crystal oscillation fractional frequency circuit includes two and the clock buffer circuit that connects, the described two and clock buffer circuit difference that connects
Phase demodulation is provided with reference to letter for 4 road local oscillation circuits, general measuring instrument radio-frequency module frequency mixer and general measuring instrument signal processing module
Number；
A reversed gate circuit is provided between the crystal oscillator and the clock buffer circuit；
The crystal oscillator generates 80MHz reference signals；
Per road, output is both provided with a low-pass filter circuit to the clock buffer circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510772645.1A CN105306091B (en) | 2015-11-13 | 2015-11-13 | Crystal oscillation fractional frequency circuit for radio general measuring instrument RF local oscillator circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510772645.1A CN105306091B (en) | 2015-11-13 | 2015-11-13 | Crystal oscillation fractional frequency circuit for radio general measuring instrument RF local oscillator circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105306091A CN105306091A (en) | 2016-02-03 |
| CN105306091B true CN105306091B (en) | 2018-11-09 |
Family
ID=55202924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510772645.1A Active CN105306091B (en) | 2015-11-13 | 2015-11-13 | Crystal oscillation fractional frequency circuit for radio general measuring instrument RF local oscillator circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105306091B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391334A (en) * | 2018-12-18 | 2019-02-26 | 成都前锋电子仪器有限责任公司 | Room temperature for radio integration test module calibrates circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013934A (en) * | 2007-02-17 | 2007-08-08 | 北京航空航天大学 | Multi-path synchronous clock divider adapted for distributed simulation |
| CN103105889A (en) * | 2013-01-21 | 2013-05-15 | 杭州乔微电子科技有限公司 | Clock synchronous device and system for Field Programmable Gate Array (FPGA) prototype test plate piling |
| CN103647575A (en) * | 2013-12-19 | 2014-03-19 | 中国航天科工集团八五一一研究所 | 2-12GHz broadband microwave front-end circuit and 2-12GHz microwave signal receiving method |
| CN204334482U (en) * | 2014-12-31 | 2015-05-13 | 北京北广科技股份有限公司 | A kind of signal generator that simultaneously can export polytype signal |
| CN205070990U (en) * | 2015-11-13 | 2016-03-02 | 成都前锋电子仪器有限责任公司 | A crystal oscillator frequency dividing circuit that is used for radio general measuring instrument radio frequency local oscillator circuit |
-
2015
- 2015-11-13 CN CN201510772645.1A patent/CN105306091B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013934A (en) * | 2007-02-17 | 2007-08-08 | 北京航空航天大学 | Multi-path synchronous clock divider adapted for distributed simulation |
| CN103105889A (en) * | 2013-01-21 | 2013-05-15 | 杭州乔微电子科技有限公司 | Clock synchronous device and system for Field Programmable Gate Array (FPGA) prototype test plate piling |
| CN103647575A (en) * | 2013-12-19 | 2014-03-19 | 中国航天科工集团八五一一研究所 | 2-12GHz broadband microwave front-end circuit and 2-12GHz microwave signal receiving method |
| CN204334482U (en) * | 2014-12-31 | 2015-05-13 | 北京北广科技股份有限公司 | A kind of signal generator that simultaneously can export polytype signal |
| CN205070990U (en) * | 2015-11-13 | 2016-03-02 | 成都前锋电子仪器有限责任公司 | A crystal oscillator frequency dividing circuit that is used for radio general measuring instrument radio frequency local oscillator circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105306091A (en) | 2016-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8378693B2 (en) | Vector network analyzer (VNA) on a chip | |
| CN103001627B (en) | Quartz-crystal resonance frequency fine adjustment control system | |
| CN111398781A (en) | Analog chip test circuit and system | |
| US7629795B2 (en) | Vector impedance measurement system and method of using same | |
| CN108037332B (en) | Multi-channel reference clock generation module | |
| CN105306091B (en) | Crystal oscillation fractional frequency circuit for radio general measuring instrument RF local oscillator circuit | |
| TWI280002B (en) | Apparatus and method for calibrating IQ mismatch | |
| WO2009147810A1 (en) | Test system, electronic device, and testing apparatus | |
| JP2008289153A (en) | Converter | |
| CN203798915U (en) | Vector network analyzer | |
| CN219718216U (en) | Analog-to-digital converter evaluation board and analog-to-digital converter testing device | |
| CN205070990U (en) | A crystal oscillator frequency dividing circuit that is used for radio general measuring instrument radio frequency local oscillator circuit | |
| CN105548932B (en) | Realize the nearly spuious system and method calibrated automatically of microwave test instrument | |
| CN106199184A (en) | A kind of spectrum analyzer with quick phase-locked function | |
| CN109618367B (en) | Device and method for broadband rapid locking and generating of vector network analyzer | |
| CN105954577A (en) | Electric energy metering method | |
| US7683650B1 (en) | Measurement instrument with synchronized interference signals | |
| WO2008047683A1 (en) | Calibration device, calibration method, and test equipment | |
| CN105227182B (en) | A kind of RF local oscillator circuit for radio general measuring instrument | |
| CN212514870U (en) | Low-voltage signal source | |
| US7680493B2 (en) | Low phase noise testing system utilizing a crystal filter | |
| CN103728549B (en) | The method of testing of crystal oscillating circuit and test device | |
| CN104811139B (en) | Vector network analysis method based on the application of DDS spurious frequencies | |
| CN105262485B (en) | A kind of wideband generative circuit for radio general measuring instrument RF local oscillator circuit | |
| CN206224290U (en) | A kind of high-resolution signal generator based on DDS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |