Low phase spurious frequency synthesis method

A technology of frequency synthesis and frequency synthesizer, applied in automatic control of power, electrical components, etc., can solve the problem of spurious index, spurious index does not meet the requirements, frequency synthesizer-related and uncorrelated interference cannot be fully expected, etc. , to achieve the effect of reducing the difficulty of design, reducing the difficulty of design and debugging, and reducing the difficulty of debugging
CN101064510AInactive Publication Date: 2007-10-31UNIV OF ELECTRONIC SCI & TECH OF CHINA
0 Cites 25 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF ELECTRONIC SCI & TECH OF CHINA
Publication Date
2007-10-31
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a low phase stray frequency synthesizing method and application. The frequency distribution relationship of the synthesizing scheme is definite in current technique for definite output frequency; the invention changes that situation, uses character that any output frequency may multiple distribution relationships in frequency synthesizing scheme of multiple adjustments, on precondition of ensure to obtain the output frequency, by detecting output signal (by phase noise automatic detecting system), choosing best distribution relationship of frequency purity especially stray index, and storing it into RAM / ROM. When using the frequency synthesizer, corresponding frequency relationship is read out from the RAM / ROM in checking table mode to achieve purpose of designing high distinguishability, low stray low phase noise agility frequency changing microwave millimeter wave frequency synthesizer, so the performance of the microwave millimeter wave frequency synthesizer is increased, specially the debugging difficulty of stray index of frequency synthesizer is decreased greatly.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of frequency synthesis, in particular to a simple and practical method for generating frequency synthesis signals. Background technique

[0002] Frequency synthesis technology refers to the technology that realizes the linear operation of one or more reference signal sources with high frequency stability and accuracy through the frequency domain to generate a large number of discrete frequencies with the same stability and accuracy, and realizes the circuit of frequency synthesis called a frequency synthesizer. The main technical indicators of a frequency synthesizer usually include: output frequency range, minimum frequency step (also known as frequency interval), spectral purity (including phase noise and phase spurs), frequency switching time (also known as frequency conversion time, frequency hopping time ). Due to the high technical difficulty and the increasingly high requirements for it, frequency s...

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