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:
Mar. 03, 2020
Filed:
Feb. 13, 2019
Marvell International Ltd., Hamilton, BM;
Sai-Wang Tam, Sunnyvale, CA (US);
Randy Tsang, San Carlos, CA (US);
Ovidiu Carnu, Scotts Valley, CA (US);
Donghong Cui, San Jose, CA (US);
Amir Ghaffari, Campbell, CA (US);
Wai Lau, San Jose, CA (US);
Timothy Loo, San Jose, CA (US);
Alden C. Wong, Sunnyvale, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
Radio-frequency front-end circuitry includes an output terminal, a receive amplifier controllably coupled to the output terminal, at least one transmit amplifier controllably inductively coupled to the output terminal, and at least one impedance element controllably coupled between ground and one of the at least one transmit amplifier to reduce degradation of output of the radio-frequency front-end circuitry when the at least one transmit amplifier is not in use. In differential signaling, there is an impedance element between ground and each pole of the differential signal. A second transmit amplifier may generate second transmit signals and harmonics of the second transmit signals, and the second transmit amplifier may be switchably connected to the output of a first transmit amplifier so that output of the second transmit amplifier is filtered by the one of the first transmit amplifier. The transmit amplifiers may include a WiFi power amplifier and a BLUETOOTH® power amplifier.