MODULE FOR RADIO COMMUNICATION TERMINAL AND RADIO COMMUNICATION METHOD

MODULE FOR RADIO COMMUNICATION TERMINAL AND RADIO COMMUNICATION METHOD

PROBLEM TO BE SOLVED: To provide a module for a mobile communication terminal and a mobile communication method that are robust over an antenna impedance fluctuation and can cope with a plurality of bands even if a tunable filter the pass band of which is variable is used.SOLUTION: A module for a ra...

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Hauptverfasser: SHIBA TAKASHI, TONE MASAZUMI, YAMAMOTO AKIO, HIKINO OSAMU
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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creator SHIBA TAKASHI
TONE MASAZUMI
YAMAMOTO AKIO
HIKINO OSAMU
description PROBLEM TO BE SOLVED: To provide a module for a mobile communication terminal and a mobile communication method that are robust over an antenna impedance fluctuation and can cope with a plurality of bands even if a tunable filter the pass band of which is variable is used.SOLUTION: A module for a radio communication terminal comprises: an antenna 1 for transmitting a transmission signal and receiving a reception signal; a duplexer 2 for separating the transmission signal and the reception signal and having a variable characteristic for selectively passing frequency signals of a plurality of bands; an interference signal cancel unit 48 for cancelling a transmission signal leaked from a transmission side to a reception side and reception band noise of the transmission side by a prescribed amount; an RF unit 21 for processing the same signal frequency band as the reception signal; an adjuster 29 for adjusting impedance between the antenna and the duplexer; and a detector 22 for detecting a reception signal level. The module adjusts and controls the adjustor 29 by use of the reception signal level from the detector 22.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
title MODULE FOR RADIO COMMUNICATION TERMINAL AND RADIO COMMUNICATION METHOD
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