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. 12, 1995
Filed:
Jun. 10, 1994
Tsutomu Katsuyama, Tokyo, JP;
Hiroshi Ando, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
An antenna switching circuit comprises a first amplifier including a first FET receiving a first receive signal from a first antenna at a gate of the first FET, and amplifying the first receive signal, and outputting the amplified signal via a drain of the first FET to an output terminal, and a second amplifier including a second FET receiving a second receive signal from a second antenna at a gate of the second FET, and amplifying the second receive signal and outputting the amplified signal via a drain of the second FET to the output terminal. The first and second FETs are coupled to receive, at their sources, first and second control signals complementary to each other so that one of the FETs is made active while the other is made inactive, depending on values of the first and second control signals. The consumption current is reduced, and in addition, an amplifier in a receiver provided to receive the output of the antenna switching circuit may be omitted.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile