RADIO COMMUNICATION APPARATUS

摘要

A communication apparatus includes a radio portion (100) configured to transmit a modulated transmission signal and to receive a modulated reception signal. The radio portion (100) includes a transmission and reception antenna (103) configured to transmit the modulated transmission signal and to receive the modulated reception signal; a reception antenna (105) configured to receive the modulated reception signal; a transmission filter (107) interposed between a modulation and demodulation circuit (101) and the transmission and reception antenna (103), and configured to pass the modulated transmission signal; a reception filter (109) interposed between the transmission and reception antenna. (103) and the modulation and demodulation circuit (101) and between the reception antenna (105) and the modulation and demodulation circuit (101), and configured to pass the modulated reception signal; a first circulator (111) configured to direct the modulated reception signal from the transmission and reception antenna (103) to the reception filter (109); and a second circulator (113) configured to direct the modulated reception signal from the reception antenna (105) to the reception filter (109).