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:
Jun. 30, 2020
Filed:
Mar. 05, 2018
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Abstract
A high-frequency switch includes: a first transistor connected to an input terminal and a first output terminal; a second transistor connected to the first output terminal; a third transistor connected to the second transistor and grounded; a resistor connected to a connection between the second and third transistors and grounded; a switching circuit switchable between a state in which the switching circuit allows passage of a transmitted/received signal between the input terminal and a second output terminal and a state in which the switching circuit cuts off the transmitted/received signal; and a control unit to control the first, second, and third transistors and the switching circuit. At the time of reception, the control unit brings the switching circuit into the state in which the switching circuit cuts off the transmitted/received signal, places the first and third transistors in an on-state, and places the second transistor in an off-state. At the time of transmission and reception with an automatic gain control operation, the control unit brings the switching circuit into the state in which the switching circuit allows the passage of the transmitted/received signal, brings the first and third transistors in an off-state, and brings the second transistor in an on-state.