local oscillator

基本解釋

Frequency Synthesizer (FS) is a very important block, which is used in a wireless transceiver as a local oscillator for frequency translation and channel selection.
頻率郃成器是射頻收發(fā)機中非常重要的模塊，是用於頻率轉(zhuǎn)換和頻道選擇的本地振蕩源。
Single frequency source is usually used as local oscillator in communication system and radar system, also as a reference clock in digital circuits, so it is a extensive-applied technique.
固定頻率源可以在在通訊系統(tǒng)和雷達系統(tǒng)中作爲本機振蕩器，也可以作爲數(shù)字電路的基準時鍾信號，因此得到了廣泛的應用。

the oscillator in a superheterodyne receiver whose output frequency is mixed with the incoming modulated radio-frequency carrier signal to produce the required intermediate frequency