发明名称 Carrier signal demodulation method for testing functionality of signal preproduction and/or signal transmitting device of access control system of vehicle, involves producing demodulated output signal from stage signals
摘要 <p>The method involves producing received signals (S111, S112) from a carrier signal (S20) using two signal transformation units, where one of the received signals is inverse to the other received signal. The received signals are shifted to each other approximately around 180 degree phases, and are scanned at peak values i.e. positive peak values, so that stage signals (S121, S122) are produced. A demodulated output signal (S130) is produced from the stage signals, and the signal transformation units are connected parallel to each other. An independent claim is also included for a circuit arrangement for demodulation of signals wirelessly transmitted over an electromagnetic field.</p>
申请公布号 DE102008059426(A1) 申请公布日期 2009.06.04
申请号 DE20081059426 申请日期 2008.11.27
申请人 CONTI TEMIC MICROELECTRONIC GMBH 发明人 TENCONI, BERNARD
分类号 H04L27/06;H04L25/06 主分类号 H04L27/06
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