Frequency mixer group delay measuring circuit and method

A technology for measuring circuits and mixers, applied in the direction of electrical components, automatic power control, etc., can solve problems such as cumbersome operation procedures, and achieve the effects of accurate measurement results, accurate phase error correction, and fast measurement process.

Active Publication Date: 2014-02-19
CHINA ELECTRONIS TECH INSTR CO LTD
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention proposes a mixer group delay measurement circuit and method, which solves the problem of cumbersome operation procedures in the existing mixer group delay measurement technology measurement process and calibration process

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
  • Frequency mixer group delay measuring circuit and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] For mixers or frequency converters, due to the difference in input frequency and output frequency, the measurement of group delay is more difficult and the measurement process is very cumbersome. The invention provides a mixer group time delay measurement circuit and method, which uses a comb wave generator to realize the mixer group time delay measurement on a vector network analyzer, and completes the phase measurement of the input signal...

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 frequency mixer group delay measuring circuit which comprises a vector network analyzer and a comb generator. The vector network analyzer comprises a first frequency synthesizer, a second frequency synthesizer and a receiver. The output signals of the first frequency synthesizer are divided into two channels through a first coupler, one channel signals are coupled to the radio-frequency signal input end of a frequency mixer to be tested, and the other channel signals are coupled to the receiver. The output signals of the second frequency mixer are coupled to the local oscillating signal input end of the frequency mixer to be tested. The vector network analyzer further comprises a reference oscillator, the output end of the reference oscillator is coupled to the input end of the comb generator, the output end of the comb generator and the output end of the frequency mixer to be tested are coupled to the input end of a second coupler together, and the output end of the second coupler are coupled to the receiver. The frequency mixer group delay measuring circuit can achieve the measurement of the phase position of a measurement channel conveniently and fast, and achieve phase error correction accurately.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a mixer group delay measurement circuit, and also to a mixer group delay measurement method. Background technique [0002] Frequency conversion devices are common basic components and core devices in radio frequency and microwave transceiver equipment. They are widely used in the uplink and downlink of communication, radar, satellite and other systems. These devices require data transmission with low bit error rate. Frequency conversion The group delay of the device is a key parameter that affects the bit error rate. Group delay is a very important performance index to effectively express phase distortion. How to accurately and quickly measure the group delay characteristics of frequency converters has become an urgent problem to be solved. [0003] At present, the group delay measurement using the vector network analyzer is to calculate the group delay by measuring the phase ra...

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): H03L7/085
Inventor 徐洪涛段飞曹志英李卓明
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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