| 摘要 |
<p>PURPOSE:To provide a radar receiver which prevents video signals from being superposed with unnecessary waves having a zero-doppler frequency component caused by saturation of a low noise amplifier placed in the input part of a radar receiver due to transmitted waves leaking to the receiver side when a radar transmitter makes signal transmission. CONSTITUTION:To pass pulse signals due to leaking-in in signal transmission to a transmission line 14 provided in parallel with a low noise amplifier 3 during the signal transmitting period. two switches 13 are installed before and after the low noise amplifier 3 and transmission line 14 while a switch driving circuit 15 is installed inside of a radar receiver 1.</p> |
