A received signal passed through an HPF is supplied to an input switching circuit
where the signal is switched to any of HIGH BAND, MID BAND and LOW BAND circuitry.
The received signal of each band circuitry is band-switched by an RF amplification
input BPF, RF-amplified by an RF amplifier and then a resultant received signal
is supplied from an RF amplification output BPF. The received signal is mixed with
a local oscillation signal from a local oscillator circuit by a mixer circuit to
generate an intermediate-frequency signal. The intermediate-frequency signal is
supplied to a first IF amplifier circuit, a SAW filter and a second IF amplifier
circuit. A PLL channel select circuit outputs a switching voltage for each band
and conduct PLL control for the local oscillator circuit.
