发明名称 ANTENNA DEVICE AND COMMUNICATION DEVICE
摘要 <p><P>PROBLEM TO BE SOLVED: To provide a communication device having a built-in antenna device which can improve communication characteristics while made thin on the whole. <P>SOLUTION: The antenna device includes: a resonance circuit 111 having an antenna coil 11a which is inductively coupled to a reader writer 2 on receiving a magnetic field transmitted by the reader writer 2 to communicate; a resonance circuit 112 having a booster coil 11c which is disposed overlapping the antenna coil 11a across an insulating substrate 113 and has substantially the same external shape as that of the antenna coil 11a; and a communication processing unit 13 which is driven with a current flowing to the resonance circuit 111 to communicate with the reader writer 2, wherein the resonance circuits 111 and 112 have a resonance frequency equal to an oscillation frequency of a transmitter, and the number of turns of the booster coil 11c is larger than that of the antenna coil 11a. <P>COPYRIGHT: (C)2011,JPO&INPIT</p>
申请公布号 JP2011066759(A) 申请公布日期 2011.03.31
申请号 JP20090216862 申请日期 2009.09.18
申请人 SONY CHEMICAL & INFORMATION DEVICE CORP 发明人 SAITO NORIO;SUGITA SATORU
分类号 H01Q19/02;G06K19/07;G06K19/077;H01Q7/00 主分类号 H01Q19/02
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