| 摘要 |
PROBLEM TO BE SOLVED: To flexibly adapt to the diversified modes of circuit system and channel control and to avoid self mixing inexpensively with high likelihood ratio in a direct conversion receiver that performs the homodyne detection of reception waves, and performs processing at the baseband region of the reception waves, without going through an intermediate frequency filter in a transmission system reception end. SOLUTION: The direct conversion receiver has a detection means 11 for performing the homodyne detection of reception waves by a local oscillation signal and outputting a baseband signal. In addition, a local oscillation preceding injection means 12, having a transfer function being conjugate with the transfer function of a path reaching a reception wave input end, where reception waves enter from the local oscillation input end of the detection means 11, is connected to the local oscillation input end and the reception wave input end. |
