Design And Simulation Of Diplexer Of Mobile Communication

For the practical use, this paper particularly discusses the mobile communication used microwave-integrate diplexer, focusing on its principle, design and its measurement. The concerned diplexer features its narrow T/R channel, with 4.57% and 3.67% relative bandwidth and narrow band between the T/R channels as well.According to the requests and the costs, three kinds of diplexers with different configurations are designed, named parallel-coupled,hair-pin,and PCLSRR. Based on that, the microstrip hair-pin diplexer design is developed, and the measurement is accordance with the simulation results, which ensure the reliability.The three kinds of diplexers have different configurations, and their sizes are smaller and smaller. The size of the third kind of PCLSRR diplexer is the smallest one of the three, its size is smaller than the hair-pin dipexer. The study of PCLSRR diplexer is one of the focuses in modern times.In this paper, the design results and simulation results of three filters and diplexers have been gived. It can be used to meet a further application in the mobile communication systerm.