Frequency Synthesizer (FS) is a very important block, which is used in a wireless transceiver as a local oscillator for frequencytranslation and channel selection.
频率合成器是射频收发机中非常重要的模块,是用于频率转换和频道选择的本地振荡源。
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A frequencytranslation circuit (172-188) abuts the multiple channel bandpass filtered analogue signals in the frequency domain without any guard bands between adjacent channel signals.