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. 26, 2013
Filed:
May. 27, 2011
Jianjun Zhou, Shenzhen, CN;
Zhuobiao He, Shenzhen, CN;
Fan Yang, Shenzhen, CN;
Yusong Chi, Shenzhen, CN;
Meng Wang, Shenzhen, CN;
Hongyu Wang, Shenzhen, CN;
Xinfang Liu, Shenzhen, CN;
Min Yi, Shenzhen, CN;
Xinrong HU, Shenzhen, CN;
Jianjun Zhou, Shenzhen, CN;
Zhuobiao He, Shenzhen, CN;
Fan Yang, Shenzhen, CN;
Yusong Chi, Shenzhen, CN;
Meng Wang, Shenzhen, CN;
Hongyu Wang, Shenzhen, CN;
Xinfang Liu, Shenzhen, CN;
Min Yi, Shenzhen, CN;
Xinrong Hu, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
An equivalent radio frequency (RF) notch filter, an RF chip, and a receiver are provided. The equivalent RF notch filter includes: a local oscillation (LO) circuit, configured to provide a LO frequency signal; configured to be connected in parallel with the main chain, and down-convert signals of the main chain; and a frequency selective circuit realized by impedance difference, configured to provide different impedances for down-converted signals with different frequencies from the mixing circuit, so as to absorb the signals that need to be suppressed.