Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
December 1, 2015
Patent Application Number
14001061
Date Filed
February 27, 2012
Patent Citations Received
Patent Primary Examiner
Patent abstract
A transmission RF section (101) up-converts a DA-converted test signal into a high-frequency signal. An amplitude of the high-frequency signal, an envelope of which is detected by a loop-back section, is detected by an amplitude detector (400). An inverse characteristic calculator (402) converts the detected amplitude into an amplitude in the transmission RF section (101) using an inverse conversion table (407) and then calculates amplitude inverse characteristics. An FIR filter (103) corrects a signal band of a transmission signal based on a result of an inverse Fourier transform calculated by an IFFT section (405) based on the amplitude inverse characteristics as a variable factor.
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