| 摘要 |
PROBLEM TO BE SOLVED: To reduce the effect of fading in the diversity receiving antenna system and to prevent production an induction noise, signal leakage and increase in a transmission loss. SOLUTION: Optical modulators 2, 12 are arranged respectively in the vicinity of reception antennas 1, 11 and signals received by the receiving antennas 1, 11 are respectively modulated by the optical modulators 2, 12 into optical intensity signals. The optical intensity signals are coupled by a photocoupler 9 and given to an optical signal detector 7 via an optical fiber. An output (electric signal) of the optical signal detector is given to a receiver 8. The optical signal detector is arranged in the vicinity of the receiver. |
