The role of RF duplex

　　The main function of an RF duplex is to allow two different signal sources to share the same transmission medium, i.e. the same antenna or transmission line, while receiving and transmitting signals without mutual interference. It distinguishes the frequency range of input or output signals by using filters, ensuring that two different signal sources do not interfere with each other. In fields such as wireless communication, radar, and satellite communication, RF duplexers are often used to distinguish the frequency of transmitting and receiving signals, avoiding interference between two signals. When the frequencies of the transmitter and receiver are different, the RF duplex consists of two sets of bandpass filters with different frequencies to avoid transmitting signals from the local device to the receiver. In addition, RF duplexers are also used to solve the problem of cross frequency interference, ensuring that both reception and transmission can work normally at the same time

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