发明名称 |
Arrangement interrogation unit for transponder |
摘要 |
An interrogation unit which has a control circuit and an RF oscillator is described. The interrogation unit further has a transmitter which receives the output of the RF oscillator and transmits at least one RF interrogation pulse of a first frequency for interrogating the responder unit, causing the responder unit to return read data in the form of a RF response. Also in the interrogation unit is a switch for disabling the output of said transmitter and enabling reception of the RF response upon termination of the RF interrogation signal. The interrogation unit still further has a receiver for receiving the RF response upon termination of the RF interrogation pulse and an interrogation unit demodulator for demodulation of the read data from said RF response.
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申请公布号 |
US5444448(A) |
申请公布日期 |
1995.08.22 |
申请号 |
US19930006354 |
申请日期 |
1993.01.19 |
申请人 |
TEXAS INSTRUMENTS DEUTSCHLAND GMBH |
发明人 |
SCHUERMANN, JOSEF H.;HEINECKE, GUENTER;KREMER, RUDOLF |
分类号 |
G01S13/78;A01K11/00;G01S13/75;G01V15/00;G06K7/00;G06K19/07;G07C9/00;(IPC1-7):G01S13/75 |
主分类号 |
G01S13/78 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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