发明名称 Transmitter-receiver
摘要 A transceiver having an RF receiver, in particular VHF receiver, with digital signal processing in a digital part. The transceiver having an input part, at least one mixer and an intermediate frequency/baseband processing device, having a local channel oscillator, to which a first phase locked loop with a phase discriminator and an adjustable first frequency converter are assigned, and having a reference oscillator for the phase locked loop and the control clock of the digital signal processing device, in which, in order to acquire the control clock, a digital clock synthesizer is provided to which an output signal of the reference oscillator is supplied, and a control signal is supplied by the digital part in the form of a digital tuning word, the frequency of the reference oscillator being selected such that its order of magnitude is at least equal to the bandwidth of one or more of the reception bands used, and none of its harmonics occur in a reception channel.
申请公布号 US7076215(B1) 申请公布日期 2006.07.11
申请号 US20010936290 申请日期 2001.12.28
申请人 SIEMENS AKTIENGESELLSCHAFT 发明人 MOLIERE THOMAS
分类号 H04B1/40;H03J1/00;H03J7/06;H03L7/23 主分类号 H04B1/40
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