Test system and test method for testing phase coherent properties of radio frequency signals

A technology for characteristic testing and radio frequency signals, which is applied to the phase coherent characteristic test system and testing field of radio frequency signals. Wide and stable effect

Inactive Publication Date: 2016-03-30
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small number of digital oscilloscope channels (usually less than 4 channels), limited by the sampling rate and processing speed, the test frequency range is limited, and the phase test accuracy is low. It is not suitable for multi-channel broadband and high-precision RF signal measurement.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Test system and test method for testing phase coherent properties of radio frequency signals
  • Test system and test method for testing phase coherent properties of radio frequency signals
  • Test system and test method for testing phase coherent properties of radio frequency signals

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0029] A radio frequency signal phase coherent characteristic test system, including a connected high-speed digital sampling system and a vector signal analysis system; also includes a broadband frequency conversion system; the broadband frequency conversion system includes sequentially connected broadband frequency source, mixing module and low-pass filter module; the low-pass filter is connected with the high-speed digital sampling system; the detected input signal enters the high-speed digital sampling system after passing through the frequency mixing module and the low-pass filter module in sequence.

[0030] Its testing process is:

[0031] Step 1. The detected signal enters the frequency mixing module, and under the action of the broadband frequency source and the frequency mixing module, the frequency down-conversion of the input signal is completed;

[0032] Step 2. The down-converted signal is low-pass filtered by the low-pass filter module, and the required analog si...

specific Embodiment 2

[0035] like figure 2 As shown, on the basis of the specific embodiment 1, a signal conditioning module connected to the frequency mixing module is also included, and the detected input signal first passes through the signal conditioning module and then enters the frequency mixing module. In the test process, the detection signal is subjected to signal conditioning, amplification and filtering, and then sent to the mixing module.

specific Embodiment 3

[0036] On the basis of the specific embodiment 1, the broadband frequency conversion system is a broadband multi-channel frequency conversion system; the frequency mixing module includes more than two mixers, corresponding to more than two input channels; the broadband frequency source Connected to each mixer; the low-pass filter module includes more than two low-pass filters, which are connected to more than two mixers in one-to-one correspondence; the high-speed digital sampling system consists of a multi-channel analog-to-digital conversion system constitute. Including the input path of more than two detected signals, the phase coherence characteristic test is performed on more than two detected signals at the same time.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a test system and a test method for testing the phase coherent properties of radio frequency signals. The system comprises a high-speed digital sampling system and a vector signal analyzing system, wherein the high-speed digital sampling system and the vector signal analyzing system are connected. The test system also comprises a broadband frequency-conversion system. The broadband frequency-conversion system comprises a broadband frequency source, a frequency mixing module and a low-pass filtering module, wherein the broadband frequency source, the frequency mixing module and the low-pass filtering module are sequentially connected. A low-pass filter is connected with the high-speed digital sampling system. A to-be-tested input signal successively passes through the frequency mixing module and the low-pass filtering module, and then enters the high-speed digital sampling system. The test system and the test method are simple in technical scheme, wider in the range of test bandwidths, good in stability, larger in the number of channels and good in expandability. Based on the test system and the test method, multiple paths of signals can be tested at the same time, and the repeatability is good. Moreover, the number of channels under test can be flexibly adjusted according to needs, so that the requirement of the large-scale test can be met.

Description

technical field [0001] The invention relates to a signal phase coherent characteristic testing system and a testing method, in particular to a signal phase coherent characteristic testing system and a testing method suitable for radio frequency signals. Background technique [0002] The test of coherent signals is the basis for judging the coherence of signals, and it is also an essential technology to measure the effectiveness of coherent systems. To test the coherence of multi-channel signals, firstly, the test system itself is required to have good coherence, or in other words, the phase between multiple channels of the test system is required to satisfy a specific functional relationship. [0003] In the traditional test method, the time-domain test method is usually adopted, that is, the time-domain sampling is performed with a digital oscilloscope and processed. Due to the small number of digital oscilloscope channels (usually less than 4 channels), limited by the sam...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01R23/16
CPCG01R23/16
Inventor 赵俊杰张文堃王波
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap