A duplexer is a bidirectional three-port filter used in radio frequency communication transceiver circuits. It shares a transceiver system with the antenna to achieve signal isolation between the receiver and the transmitter, and ensures that the receiver and transmitter can operate normally at the same time. Features: low insertion loss, effectively reducing system power consumption; high power handling
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The helical duplexer is a main accessory for dual-frequency duplex radios and repeater stations. Its function is to isolate transmitting and receiving signals to ensure that both reception and transmission can operate normally at the same time. It is composed of two sets of band-stop filters of different frequencies to prevent the local transmitter signal from reaching the receiver. It has high suppression and low insertion
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