The definition of duplexer
2023/10/27
Duplexer, also known as antenna common. It is the main accessory of heterodyne duplex radio and repeater, and its function is to isolate the transmit and receive signals to ensure that the receiving and transmitting can work properly at the same time. It is composed of two sets of bandpass filters of different frequencies to avoid the transmission of the local signal to the receiver.
Duplexer, is a more special two-way three-terminal filter. Duplexer both the weak received signal coupled in, but also to feed the larger transmit power to the antenna up, and the two are required to complete their respective functions without affecting each other. General duplexer composed of spiral vibration cavity, due to its high operating frequency, the distribution parameters have a greater impact often made into a sealed set of body, the signal feeder are shielded with better coaxial cable, cavity shape material also requires a certain degree of finish. In order to facilitate heat dissipation, the appearance is often black, the three signal ends generally use standard high-frequency connector Q9 or L16-type high-frequency socket wireless communication requirements for duplexers.
