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:
Dec. 20, 2016
Filed:
Sep. 18, 2015
Broadcom Corporation, Irvine, CA (US);
Hao Wu, Los Angeles, CA (US);
Hooman Darabi, Laguna Niguel, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
Because of associated disadvantages of narrow-band off-chip radio-frequency (RF) filtering, a mixer-first receiver front-end designed to tolerate blockers with reduced gain compression and noise factor degradation is disclosed. The mixer-first receiver front-end includes two separate down-conversion paths that help to reduce added noise and voltage gain prior to baseband filtering, which are critical factors in eliminating narrow-band off-chip RF filtering. The mixer-first receiver front-end can be used to support down-conversion of multiple different communication signals (e.g., cellular, WLAN, and WPAN communication) with different center frequencies. In addition, where it is not possible to use a single, mixer-first receiver front-end to down-convert two different communication signals with potentially different center frequencies due to the need for both communication signals to be down-converted simultaneously, two mixer-first receiver front-ends can be efficiently used by sharing an antenna via a common RF port.