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).

主权项

1. A radio communication apparatus comprising:
a modulator configured to modulate a transmission signal with a transmission frequency to generate a modulated transmission signal; a demodulator configured to demodulate a modulated reception signal with a reception frequency different from the transmission frequency to generate a reception signal; and at least one transmission and reception set connected to the modulator and the demodulator, and configured to transmit the modulated transmission signal and to receive first and second modulated reception signals, the transmission and reception set comprising:
a transmission and reception antenna configured to transmit the modulated transmission signal and to receive the first modulated reception signal;a reception antenna configured to receive the second modulated reception signal;a transmission filter interposed between the modulator and the transmission and reception antenna, and configured to pass the modulated transmission signal generated by the modulator;a reception filter interposed between the transmission and reception antenna and the demodulator and between the reception antenna and the demodulator, and configured to pass the first modulated reception signal received at the transmission and reception antenna and to pass the second modulated reception signal received at the reception antenna;a first circulator configured to direct the first modulated reception signal received at the transmission and reception antenna to the reception filter; anda second circulator configured to direct the second modulated reception signal received at the reception antenna to the reception filter, whereinthe first circulator is configured to receive the second modulated reception signal passed by the reception filter and to direct the second modulated reception signal passed by the reception filter to the demodulator, andthe second circulator is configured to receive the first modulated reception signal passed by the reception filter and to direct the first modulated reception signal passed by the reception filter to the demodulator.