| 摘要 |
PURPOSE:To provide a space diversity(SD) synthesizing system provided with a function for detecting the state of stabilizing an infinite phase shifter(EPS) in an opposite phase state and for automatically recovering from the opposite phase state in the SD synthesizing system for detecting phase difference between the two received signals of an SD received main signal and a sub signal, eliminating the phase difference with the EPS and synthesizing those signals after equalizing the phases. CONSTITUTION:When an OR circuit 1 and an opposite phase detecting circuit 2 detect the opposite phase state of two received signals continuously longer than fixed time T counted by a timer 3 corresponding to control voltages C1 and C2 outputted from AGC amplifiers 11 and 12 of a detection system for detecting two received signals before synthesization and a control voltage C3 outputted from an AGC amplifier 31 of a synthesized signal output system after the synthesization, the phase of any one of two received signals is forcedly changed by an EPS 20, and this opposite phase state is avoided. |
