Front-end circuit and communication terminal apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9197187
APP PUB NO 20140055209A1
SERIAL NO

14072818

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A front-end circuit includes a diplexer and an impedance conversion circuit. The diplexer includes a feeding side common port through which a high-frequency signal in a high band and a high-frequency signal in a low band are input and output, a first port through which a high-frequency signal in a high band is input and output, and a second port through which a high-frequency signal in a low band is input and output, and demultiplexes or multiplexes the high-frequency signal in a low band and the high-frequency signal in a high band. The impedance conversion circuit is connected between the second port of the diplexer and an antenna port. The first port of the diplexer is directly connected to the antenna port through a transmission line.

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Patent Owner(s)

  • MURATA MANUFACTURING CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishizuka, Kenichi Nagaokakyo, JP 103 831
Kato, Noboru Nagaokakyo, JP 456 6250
Ueki, Noriyuki Nagaokakyo, JP 56 266

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