ANALOG/DIGITAL-COMPATIBLE FRONT-END MODULE

摘要

A analog/digital-compatible front-end module comprising a high frequency amplifier (9) for amplifying a high frequency signal received by an antenna (1); a frequency converter circuit (11) for frequency converting an output signal from the high frequency amplifier (9) to output an intermediate frequency signal; an analog demodulator (5); a digital demodulator (6); an analog/digital switch (4) for selectively supplying the output signal from the frequency converter circuit (11) to the analog demodulator (5) or to the digital demodulator (6); and an AGC signal switch (7) for controlling the gain of the high frequency amplifier (9) in accordance with a gain control signal from the analog demodulator (5) during an analog broadcast reception, while controlling the gain of the high frequency amplifier (9) in accordance with a gain control signal produced from the output signal from frequency converter circuit (11) during a digital broadcast reception.