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. 28, 2012
Filed:
Aug. 22, 2008
Kiyohiko Takahashi, Tokyo, JP;
Kiyohiko Takahashi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A power amplifier () comprises: an A/D converter () for converting, to a time discrete signal, an envelope signal included in a high-frequency modulated signal and including only an amplitude modulated component of the high-frequency modulated signal; a switching amplifier () for amplifying the output signal of the A/D converter (); a low-pass filter () for removing high frequency noise from the output signal of the switching amplifier (); a plurality of high-frequency power amplifiers (-to-) for receiving the output signal of the low-pass filter () as a power supply and for amplifying a carrier signal included in the high-frequency modulated signal; and a power controller () for adjusting the average power of the output signal of the power amplifier () by controlling the total gains of the plurality of high-frequency power amplifiers (-to-).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile