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:
Sep. 20, 2011
Filed:
Apr. 25, 2007
Hiroaki Maeda, Kawasaki, JP;
Takashi Ono, Kawasaki, JP;
Yousuke Okazaki, Kawasaki, JP;
Hirotake Honda, Kawasaki, JP;
Hiroyuki Ezuka, Kawasaki, JP;
Hiroaki Maeda, Kawasaki, JP;
Takashi Ono, Kawasaki, JP;
Yousuke Okazaki, Kawasaki, JP;
Hirotake Honda, Kawasaki, JP;
Hiroyuki Ezuka, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An amplifier failure detection apparatus for a radio transmitter that has a function for compensating for amplifier distortion of the radio transmitter and a function for determining amplifier failure has occurred by detecting that the gain of an amplifier has dropped a set level or more, in which: a gain-detection unit detects the gain of the amplifier; an alarm-detection-level-generation unit, which has a table for storing alarm-detection levels that correspond to input-amplitude levels, generates an alarm-detection level that corresponds to an input-amplitude level; and a comparison unit compares the gain detected by the gain-detection unit with the alarm-detection level, and generates an alarm based on the comparison results.