RELAY TRANSMITTER APPARATUS

摘要

A relay transmitter apparatus wherein a single constituent part is used to process a plurality of digital modulated signals occupying different frequency bands. A frequency converter (16a) converts the frequency band of a signal received via a reception antenna (10) and a reception amplifier (14), and inputs the resultant signal to an analog input/output filter (18a). The analog input/output filter (18a) passes a digital modulated signal, while attenuating an analog modulated signal. The analog input/output filter (18a) inputs a band-limited signal to a frequency converter (22a). The frequency converter (22a) converts the frequency band of the input signal. The frequency-band-converted signal is then transmitted via a transmission amplifier (24), a transmission filter (26) and a transmission antenna (28).