| 摘要 |
PURPOSE:To increase the reliability of a parallel operation system, by giving a simultaneous and parallel operation to the two units of radio devices and delivering the outputs of both devices after matching and compounding the phases to each other. CONSTITUTION:The system comprising the mixers 16-1 and 16-2, intermediate frequency amplifiers 17-1 and 17-2 plus mixers 18-1 and 18-2 is operated in parallel via the distributor 15 and the compounder 19. The voltage control quartz oscillator VCOXO forms a PLL circuit wit the phase comparator PD, and the signal of the VCXO of the remote side is applied as the reference signal of each PLL. Thus the two PLLs produce the same frequency fL1 having a synchronoism of phases. In such constitution, if one system has a trouble, the other system can be operate continuously owing to a parallel operation. Thus the reliability can be increased for the system. |
