A television (TV) tuner includes a first mixer for mixing a received RF
signal with a first local oscillator signal to produce an intermediate
frequency signal, a second mixer for mixing the intermediate frequency
signal with a second local oscillator signal for producing an in-phase
baseband output signal, a third mixer for mixing the intermediate
frequency signal with a third local oscillator signal for producing a
quadrature-phase baseband output signal, the third local oscillator
signal being the second local oscillator signal phase delayed, and a
single phase locked loop (PLL) coupled to the first mixer and the second
mixer unit for generating the first local oscillator signal and the
second local oscillator signal according to a selected channel in the
received RF signal.