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:
Feb. 16, 2021
Filed:
Feb. 22, 2017
Sumitomo Electric Industries, Ltd., Osaka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
Included are: a first power sourceconfigured to output a voltage required for a first gate bias voltage for turning a power amplifierto an ON state; a second power sourceconfigured to output a voltage required for a second gate bias voltage for turning the power amplifierto an OFF state; a changeover switchconnected between the first power sourceand the power amplifierand configured to supply either the first gate bias voltage or the second gate bias voltage to the power amplifierby switching a state between the first power sourceand the power amplifierto either an open state or a short-circuit state on the basis of a control signal related to on-off control of the power amplifier; and a resistance value varying unitconnected between the second power sourceand the power amplifierand configured such that a resistance value thereof is variable.