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:
Aug. 14, 2001
Filed:
Feb. 27, 1998
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A microwave phase shifter includes bias regulating circuits generating a gate bias of an FET switch element by processing a control voltage generated by the power-source voltage of an external system and applied to the FET switch element in a transformation process. The off-level of the gate bias is set near the pinch-off voltage. As a result, even when the control voltage of the FET switch element which switches the phase shift amount is restricted due to the circumstance of the system power-source, the off-level of the FET element can be set at a potential near the pinch-off voltage and can suppress delay in the rise of the phase shifter output because the off-level exceeds the pinch-off voltage.