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:
Dec. 08, 2015
Filed:
Mar. 24, 2015
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Masashi Kobayashi, Tokyo, JP;
Koichiro Tanaka, Hyogo, JP;
Abstract
A calibration device includes a continuous wave signal generator that generates a continuous wave signal having a predetermined amplitude, a quadrature modulator that amplifies the continuous wave signal using a variable gain and performs quadrature modulation of the amplified continuous wave signal to generate a radio frequency signal, an envelope detector that detects an envelope of the radio frequency signal, a gain adjuster that adjusts the variable gain, based on power of the detected envelope, a correction value searcher that searches for a correction value that provides a minimum value of a fluctuation amount of an amplitude of the envelope, and a corrector that adds the correction value obtained through the search by the correction value searcher to the continuous wave signal and outputs the continuous wave signal after the addition to the quadrature modulator.