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:
Jan. 11, 1994
Filed:
Dec. 02, 1991
Noriyuki Fujita, Tokyo, JP;
NEC Corporation, , JP;
Abstract
In an amplifier comprising an FET (11) having a gate electrode and source and drain electrodes and a drain bias circuit (19) controlled by an output power control command to supply a drain bias to the drain electrode, a gate bias circuit (17) is controlled by the output power control command to supply the gate electrode with a controlled voltage as a gate bias. The gate bias circuit may have a voltage source terminal (25) given a predetermined voltage and comprises a gate bias control device (27) for controlling the predetermined voltage so as to develop the controlled voltage in accordance with the output power control command. Preferably, the device comprises a ROM for memorizing gate voltage data and a voltage producing section for converting the predetermined voltage to the controlled voltage in compliance with one of the gate voltage data that is selected by the command. Alternatively, the device comprises a voltage divider for dividing the predetermined voltage into divided voltages and a selector for selecting one of the divided voltages as the controlled voltage in accordance with the command.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile