Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masahiro Kasai0
Shigeru Okawa0
Takashi Yokoyama0
Date of Patent
April 10, 2012
0Patent Application Number
122753560
Date Filed
November 21, 2008
0Patent Citations Received
Patent Primary Examiner
Patent abstract
There is provided a transmitter receiver apparatus in which a directional coupler and single pole double throw (SPDT) switches are includes on the reception side. In the directional coupler, a reception signal is inputted and split into two signals having phases different from each other by 90° and the two split signals are outputted to SPDTs. Each of the SPDTs outputs each of the split signals to an output terminal connected to an amplifier during a passage mode and to a terminal terminated with a predetermined impedance during a blocking mode.
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