Radio communication apparatus, radio communication method, antenna apparatus and first duplexer
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United States of America Patent
Stats
-
Jul 17, 2007
Grant Date -
Sep 16, 2004
app pub date -
Dec 17, 2003
filing date -
Dec 18, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Radio communication apparatus comprising an antenna, a transmitting circuit outputting a transmitting signal in a first frequency band. A duplexer connected to the antenna and having a single-phase input terminal and a balanced output terminal, conveying the transmitting signal inputted to the single-phase input terminal to the antenna. The duplexer outputs a receiving signal in a second frequency band different from the first frequency band received from the antenna substantially as a differential signal from the balanced output terminal. A receiving circuit connected to the balanced output terminal and having a circuit in which a gain of a signal of a differential component is higher than that of a signal of an in-phase component, or a loss of the signal of the differential component is lower than that of the signal of the in-phase component.
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