它是由低通滤波器和高通滤波器（或带通滤波器）组成，从而实现对无线通讯信号进行高低分频，因而适用于带双频的无线通讯系统，比如GSM/DCS，GSM/PCS, GSM/PHS 或WLAN 的2.4GHz/5GHz 等。具有低的插入损耗、高的衰减和小体积SMD片式设计，能减少复杂的调校工作，可以简化电路设计。
Microwave Diplexer (also called band separator) is formed with LP and HP (or BPF) tobe applied for band separator, especially for dual-band system, such as GSM/DCS，GSM/PCS,GSM/PHS or WLAN 2.4GHz/5GHz, etc. with low insertion loss and high attenuation as wellas small size SMD chip design , which can simplify your complex tuning and circuitdesign .

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