| 摘要 |
The disclosed radio frequency signal transmitting and receiving apparatuses compensate for phase and amplitude differences without detecting sync timing of a calibration signal. The radio frequency signal receiving apparatus consists of two or more antennas, radio frequency signal receiving units (12 and 13) each being connected to an antenna, a calibration signal generating unit (15) that generates the calibration signal having a cycle different from the cycle of a spread code, a radio frequency signal transmitting unit (14) that converts the calibration signal into a radio frequency signal, directional couplers (10 and 11) that add a radio frequency signal received by the respective antennas and the calibration signal in the radio frequency, a delaying unit (16) that delays a baseband signal from the first radio frequency signal receiving unit (13), a correlation detecting unit (17) that detects correlation between the output of the delaying unit (16) and the baseband signal from the second radio frequency signal receiving unit (12), a weight generating unit (18), and a complex multiplier (20) that compensates for the phase and gain differences between the radio frequency signal receiving units (12 and 13) based on the output of the correlation detecting unit (17). |
