Patent ID: 7982533

Claim:
A transceiving system capable of demodulating an inbound RF signal to inbound data and modulating outbound data to an outbound RF signal, comprising: a shared filter module, selectively operating in a first mode and a second mode for respectively filtering the inbound RF signal and the outbound data in a first band and a second band with a bandwidth different from the first band; a demodulation module, coupled to the shared filter module, wherein while in the first mode, the demodulation module demodulates the inbound RF signal into a first demodulation result, and outputs the first demodulation result to the shared filter module for filtering the first demodulation result into a first filter result of the first band; a baseband module, coupled to the shared filter module, wherein while in the first mode, the baseband module converts the first filter result to obtain the inbound data; an analog converter module, coupled to the shared filter module, wherein while in the second mode, the analog converter module converts the outbound data into an outbound baseband signal, and outputs the outbound baseband signal to the shared filter module for filtering the outbound baseband signal into a second filter result of the second band; and a modulation module, coupled to the shared filter module, wherein while in the second mode, the modulation module modulates the second filter result into the outbound RF signal for transmission, wherein the first mode is a receiving mode where the shared filter module functions as a bandpass filter and the second mode is a transmitting mode where the shared filter module functions as a low pass filter.