Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Low-noise reference signal generator and signal generation method

A reference signal, low noise technology, applied in the direction of electrical components, automatic power control, etc., can solve problems such as large additional noise, and achieve the effect of low frequency accuracy

Inactive Publication Date: 2014-01-08
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention proposes a low-noise reference signal generator and a signal generating method, which solves the problem that the existing low-noise reference phase-locked frequency synthesis circuit loop itself has relatively large additional noise and cannot synthesize a signal from a very close carrier (1Hz frequency deviation) ) problem with reference signals that all have very low phase noise to begin with

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
  • Low-noise reference signal generator and signal generation method
  • Low-noise reference signal generator and signal generation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] 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, not all, embodiments of the present invention. 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.

[0029] Such as figure 2 As shown, the low-noise reference signal generator of the present invention includes: 10MHz constant temperature crystal oscillator 21 , low-noise frequency multiplication circuit 22 , double-balanced diode phase detector 23 , integral low-pass filter circuit 24 and 100MHz constant temperature crystal oscillator 25 .

[0030] The 10MHz constant temperature crystal oscillator 21 is used as the frequency reference of the reference 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 low-noise reference signal generator and a signal generation method. The generator comprises a 10MHz constant-temperature crystal oscillator, a low-noise frequency doubling circuit, a double-balance diode phase discriminator, an integral low-pass filtering circuit and a 100MHz constant-temperature crystal oscillator. A 100MHz reference signal generated by the low-noise reference signal generator has the phase noise starting from 1Hz at the extremely low near end, and has very high frequency accuracy and extremely low aging rate after correction.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a low-noise reference signal generator, and also to a method for generating a low-noise reference signal. Background technique [0002] With the development of modern radar and radio communication technology, various electronic devices have continuously put forward higher requirements for the frequency synthesizers used in their internal applications or system tests. The most important point is to have extremely low sideband phase noise. Most frequency synthesizers usually use a high-stable time base as a reference, and then use various frequency synthesis techniques to achieve different frequency coverage or achieve purposes such as reducing phase noise, improving frequency stability and frequency resolution, etc., to meet the needs of the system At this time, the phase noise of the reference signal generally directly determines the close-in phase noise of the final frequency sy...

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): H03L7/08
Inventor 刘亮樊晓腾刘青松何攀峰范吉伟徐明哲
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com