| 摘要 |
PURPOSE:To eliminate an error of delay and to prevent the overall delay characteristics, by securing a symmetrical relation between the delay time of each channel and the central frequency of the channel. CONSTITUTION:The branching device BF1 of the 1st station S1 is divided into branching filters I2, I4, I1 and I3 of even and odd channels. A delay equalizer I0 is connected between the filter I4 and an antenna A1, and a resistive terminator 5 is connected longitudinally to the filter I1. At the same time, a branching device BF2 of the 2nd station S2 is also divided into branching filters 21, 23, 22 and 24 of odd and even channels, respectively. Then a delay equalizer 25 and a resistive terminator 6 are connected longitudinally. As a result, the general delay time of both transmission and reception is equal to each channel. Furthermore the delay time characteristics of both transmitter and receiver sides are symmetrical to the central frequency of each channel. |
