| 摘要 |
A transmitter and a receiver apparatus suitable for a radio modem. According to an embodiment, the receiver apparatus comprises an input stage, an intermediate frequency stage and a demodulation and output stage. The input stage receive s a signal from a transducer (e.g. a radio antenna) and generates a receive signal for the intermediate frequency stage. The intermediate frequency stage is configured to at least partially down-convert the receive signal for the demodulation and output stage. The demodulation stage is configured to demodulate the receive signal and genera te a corresponding digital receive output signal. According to an embodiment, the transmitter apparatus comprises a transmitter signal modulation stage and a transmitter stage.
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