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:
Aug. 22, 2017
Filed:
Apr. 22, 2016
Huawei Technologies Co., Ltd., Shenzhen, Guangdong, CN;
Zhilei Zhao, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A copper wire interface circuit is provided, where a current output amplifier is connected to a port impedance component and a transmit end, and the current output amplifier is configured to amplify a to-be-transmitted signal; the port impedance component is connected to a high-pass filter, impedance, after undergoing impedance transformation performed by the high-pass filter, of the port impedance component is used for performing impedance matching with equivalent impedance of a cable and a load; the high-pass filter is connected to the port impedance component and the cable, the high-pass filter is configured to filter the to-be-transmitted signal or a received signal and perform impedance transformation on the port impedance component; and an echo cancellation module is connected to the port impedance component and a receive end.