| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an RFID reader/writer with a simple constitution and a low cost for communicating with IC tags differing in communication frequencies by means of one set of the RFID reader/writer. <P>SOLUTION: A first and a second switches 106, 107 for switching a plurality of transmission and reception signal paths are disposed at each of transmission and reception units of an RFID reader/writer 100. A first and a second mixers 110, 111 connected with a second local oscillator 105, and a first and a second undesired wave suppressing filters 112, 113 are disposed for at least one of the plurality of transmission signal paths and at least one of the reception signal paths. <P>COPYRIGHT: (C)2010,JPO&INPIT |
