C波段统一载波的微波集成下变频器

本文所介绍的是专为卫星工程地面站研制的C波段统一载波的微波集成下变频器。它具有三通道特性,每通道具有净增益20分贝,噪声系数小于8分贝,前中输出干扰电平小于12微伏。和与差信道问随机均方根相位差值小于0.3度;三通道间隔离度大于60分贝;一致性小于±0.5分贝。通过正确选择一本振频率,可以对27个信号进行跟踪和遥测。

MICROWAVE INTEGRATED DOWNCONVERTER USED IN UNIFY CARRIER FOR C BAND

The microwave integrated downconverter used in unify Carrier for c band is specially designed for satellite communication earth station. It has three channels. Features of each channel are as follows the net gain about 20dB, the NF less than 8dB, the interfering signal output level is less the 12MV for the prime-amplifier, the root-mean-squaz of flat-phase difference between each two channel is less than 0.3 degree, the insulation among three channels is more than 60dB, and the increment of gain amony three channels is less than ±0.5dB. The downconverter can track and telemeter up to twenty-seven frequency signals by means of chosing a correct local cscillating frequency.