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Definition of "Local Oscillator" |
An oscillator used to feed a mixer to produce a sum and difference of its frequency and a frequency of interest. A local oscillator is used to generate an IF frequency by applying the oscillator signal and the incoming RF signal into a mixer. / (1) an oscillator or circuit that produces a periodic signal whose function is to be utilized in the demodulation of a received radio signal. This periodic signal is typically a sinusoid and the oscillator is typically located in a radio receiver. The tuning of the radio to a given channel, or station, typically involves the tuning of the local oscillator. The local oscillator is part of the radio frequency (RF) front end of a radio receiver and is an important component in a heterodyne receiver. |
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