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. 08, 2022
Filed:
Jun. 04, 2020
Murata Manufacturing Co., Ltd., Kyoto, JP;
Daisuke Watanabe, Kyoto, JP;
Takayuki Tomita, Kyoto, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A variable gain circuit includes: input/output terminals Pand Pconfigured to input/output a high frequency signal; a transistor having a signal terminal 'a' connected to the input/output terminal P, a signal terminal 'b' connected to the input/output terminal P, and a control terminal; bias terminals B, Band B, and a reference voltage terminal respectively set to a first variable voltage, a second variable voltage, a third variable voltage, and a fixed voltage that are independent of one another; an impedance element connected between the bias terminal Band the signal terminal a; an impedance element connected between the bias terminal Band the signal terminal b; an impedance element connected between the bias terminal Band the control terminal; and a first switch configured to switch between connecting and not connecting the reference voltage terminal and the control terminal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile