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. 15, 2010
Filed:
Sep. 21, 2006
Kyoichi Takahashi, Tokyo, JP;
Nobuhiro Matsudaira, Yokohama, JP;
Takashi Yokoi, Yokohama, JP;
Renesas Technology, Tokyo, JP;
Hitachi Hybrid Network Co., Ltd., Kanagawa, JP;
Abstract
The present invention provides electronic parts for amplifying high frequency power capable of expanding a dynamic range of an output power detection circuit, obtaining a continuous detection output having no inflexion point from a low region of output power to its high region and thereby improving controllability of the output power. In a wireless communication system which controls output power of a high frequency power amplifier, based on an output power detection signal and a signal indicative of an output level, an output power detection circuit is provided with a multi-stage configured amplifier which amplifies a high frequency signal taken out via a coupler and capacitive elements. Further, a plurality of detection circuits which detect outputs of amplifiers of respective stages, and a detection circuit which detects the high frequency signal without passing through the multi-stage configured amplifier are provided. One obtained by combining the outputs of these detection circuits is inputted to an error amplifier for generating an output power control signal, as the output power detection signal to thereby generate a control signal for the high frequency power amplifier.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile