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. 06, 2013
Filed:
Oct. 29, 2012
Murata Manufacturing Co., Ltd, Nagaokakyo, JP;
Hidemori Akagi, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A circuit module and a measurement method enable accurate measurement of isolation characteristics of an isolator. The circuit module includes a processing circuit including SAW filters and a power amplifier and performs certain processing on an input signal. An isolator includes an input port, an output port and a ground port and outputs an input signal, which is input thereto via the input port and on which the processing circuit has performed the certain processing, as an output signal via the output port. A directional coupler distributes a signal transmitted between the processing circuit and the isolator. A measurement instrument inputs a test signal from the output port and measures a detection signal output from the directional coupler.