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Title:
COMMUNICATION APPARATUS
Document Type and Number:
Japanese Patent JP2007027829
Kind Code:
A
Abstract:

To provide a communication apparatus including a circuit for receiving a radio wave and a circuit for transmitting a radio wave, wherein the circuit for transmitting the radio wave can transmit the radio wave with sufficient strength and the circuit for receiving the radio wave can obtain sufficient sensitivity even if both the circuits share an antenna circuit.

The communication apparatus includes: the antenna circuit 2 including a first coil; a first circuit 3 using the first coil of the antenna circuit 2; and a second circuit 4 using a second coil being part of the first coil which is shared with the circuit 2 so that the impedance of the second coil is smaller than that of the first coil.


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Inventors:
KAMIYAMA KENICHI
OGA GENICHIRO
TANAKA YUKIO
MIYASHITA MASARU
KONDO SATORU
Application Number:
JP2005202819A
Publication Date:
February 01, 2007
Filing Date:
July 12, 2005
Export Citation:
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Assignee:
SONY CORP
International Classes:
H04B1/59; G06K17/00; G06K19/00; G06K19/07; H04B5/02
Domestic Patent References:
JP2004145449A2004-05-20
JP2001188890A2001-07-10
JP2005165703A2005-06-23
JPH10322249A1998-12-04
JP2000357982A2000-12-26
Attorney, Agent or Firm:
Takahisa Sato



 
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