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:
May. 18, 2021
Filed:
Feb. 04, 2020
Realtek Semiconductor Corporation, Hsinchu, TW;
REALTEK SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
Disclosed is an apparatus including a radio frequency amplifying circuit, a power supply circuit, and a bias generating circuit. The power supply circuit includes: a first power supply terminal coupled to a first ground terminal via a first capacitor and coupled to/decoupled from the radio frequency amplifying circuit through a first switch; and a second power supply terminal coupled to a second ground terminal via a second capacitor and coupled to/decoupled from the radio frequency amplifying circuit through a second switch, wherein the first capacitor and second capacitor are coupled to/decoupled from the radio frequency amplifying circuit through the first switch and second switch respectively, the supply voltages outputted from the two power supply terminals are different, and the two switches are not concurrently turned on. The radio frequency amplifying circuit operates according to a bias voltage provided by the bias generating circuit and one of the two supply voltages.