Noun
(electronics) Initialism of voltage controlled oscillator.
(communication) Initialism of Voice Carry Over, a service that relays voice communication to the deaf.
Source: en.wiktionary.orgA mixer can translate the VCO frequency by a fixed offset. Source: Internet
An example being a divider following a mixer; this allows the divider to operate at a much lower frequency than the VCO without a loss in loop gain. Source: Internet
If the output phase drifts, the error signal will increase, driving the VCO phase in the opposite direction so as to reduce the error. Source: Internet
In a PLL, the two inputs of the phase detector are the reference input and the feedback from the VCO. Source: Internet
It can be proved that inputs and of VCO for phase-frequency domain and time domain models are almost equal. Source: Internet
Phase domain model Consider the input of PLL and VCO output are high frequency signals. Source: Internet