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A stray signal elimination circuit and method

A stray signal and elimination circuit technology, which is applied in the direction of electrical components, automatic power control, etc., can solve the problems of weakening stray signals and not being able to directly suppress stray signals, so as to achieve the effect of solving signal quality and improving signal transmission quality

Active Publication Date: 2022-03-25
NEWCOSEMI BEIJING TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method can only weaken the generated spurious signals, but cannot directly suppress all the spurious signals generated

Method used

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  • A stray signal elimination circuit and method
  • A stray signal elimination circuit and method
  • A stray signal elimination circuit and method

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0042] This application discloses a stray signal elimination circuit, its structure schematic diagram is as follows figure 1 shown, including:

[0043] A phase detector 11 , a spur estimation and regeneration device 12 and a phase modulator 13 .

[0044] Wherein, the phase detector 11 is used to obtain the actual clock signal and the reference clock signal, and compare the actual clock signal and the reference clock signal to obtain the phase difference signal, wherein the actual c...

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Abstract

The application discloses a stray signal elimination circuit and method, including: a phase detector, a stray estimation and regeneration device, and a phase modulator. After obtaining the actual clock signal that contains the spurious signal, estimate the spurious signal contained by the reference clock signal that does not contain the spurious signal, and adjust the actual clock signal inversely through the estimated spurious signal, so as to eliminate the actual The spurious signal in the clock signal ensures that after the spurious signal is generated, all the spurious signals that have been generated can be eliminated by means of reverse adjustment, which improves the quality of signal transmission and solves the problem that cannot be solved in the prior art. The problem of reducing signal quality caused by suppression of spurious signals during generation.

Description

technical field [0001] The present application relates to the technical field of electronic circuits, in particular to a stray signal elimination circuit and method. Background technique [0002] In a communication system, there are usually spurious signals between radio frequency signals, resulting in spurious interference, resulting in a decrease in the signal-to-noise ratio of the communication system and a decrease in communication quality. [0003] In order to solve this problem, a method of directly suppressing the generation of spurious signals is usually adopted to avoid the interference of spurious signals. However, this method can only weaken the generated spurious signals, but cannot directly suppress the generation of all spurious signals. Contents of the invention [0004] In view of this, the present application provides a stray signal elimination circuit and method, and its specific scheme is as follows: [0005] A spurious signal cancellation circuit comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/08H03L7/085
CPCH03L7/08H03L7/085H03K2005/00286H03K5/1252H03L7/06G06F1/08
Inventor 皮德义程功宝
Owner NEWCOSEMI BEIJING TECH CO LTD