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3、频道合成器 MMDS频道合成器是由定向滤波器组成的,通常四个一组安放在机柜上或吊装在天花板上以使连接发射机的跳接线最短,跳接线通常采用1/2″的超软泡沫电缆。来自发射机的射频信号从副波导输入,经过定向耦合装置绝大部分信号功率进入带通滤波器,通过带通滤波器的信号功率再经定向耦合装置进入
3, channel synthesizer MMDS channel synthesizer is composed of directional filters, usually a group of four placed in the cabinet or ceiling mounted to connect the transmitter jumpers shortest jumpers usually use 1/2 " Ultra-soft foam cable. RF signal from the transmitter input from the secondary waveguide, through the directional coupler most of the signal power into the band-pass filter, the signal power through the band-pass filter and then through the directional coupling device