The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2013
Filed:
Aug. 07, 2008
Chengsheng LI, Guangdong, CN;
Yali Wang, Guangdong, CN;
Tianwen Ding, Guangdong, CN;
Shenzhen Grentech Co., Ltd., Guangdong, CN;
Abstract
The present invention relates to the communication field and provides method and system for detecting repeater self-excitation and the repeater using the method and system. The method includes detecting an output power of an up link; judging whether the detected output power of the up link exceeds a threshold of self-excitation and, if so, adding a numerically-controlled attenuation to the up link accordingly; and judging whether the change in the output power of the up link is equal to that in the numerically-controlled attenuation and, judging whether the repeater is subject to a self-excitation according to the result of judgment regarding the change in the output power of the up link. The repeater self-excitation detecting method has the following advantages: 1. The self-excitation can be detected in time, thus avoiding had effect on the communication system; 2. The devices of repeater can be protected from being burned down; and 3. The cost incurred by the patrol inspection personnel can be reduced.