Microstrip Filter Design And Simulation

With the development of communication technology, microwave technology is more and more used in communication, radar, environment detective and medicine field, microwave and RF are widely used. Especially in commercial field such as cell phone, personal communication system, WAN, The car carries a millimeter of wave to defend to bump radar,living broadcasting satellite for broadcasting and television, GPS, RF identification tagging, UFB wireless communication and radar system, and, the remote sensor system for microwave environment. At the same time, microwave technology is in great need by the defense system for Have no source and Have a source, orientation, communication and weapon control system. Microwaves system possesses lots of advantages such as BFB and The view spread,these are the vital factors for terrestrial and satellite communication, and this also accelerate the development of microwave component.MF is the core of microwave design technologies, they can be used in divide or combine for different frequency, such as In change the frequency machine, the times the frequency machine and multiple router communication. The electric frequency spectrum is limited, distributed by application, and filter can also be used in limitation great power transmitter to radiate within FB, and can prevent transmitter from disturb. In rhetoric matching in network with filter, such as between the two different rhetoric communication, or between the creator with inner resistance and reactance load. Sometimes in order to get a certain physic and time lapsing characteristics, or reimburse physic distortion caused by other filters or dispersive structure, filer is also needed. Altogether, for all the electric wave band from UWB, microwave to the light wave, filters are of great importance.On the basis of the studies of Miscellaneous wave restrain technology of Tiny take structure band-pass filter, the paper provides SIR consistence The coupling match tiny take a bandpass filter,analyze the mechanism of Miscellaneous wave restrain frequency control of SIR The resonance flaps the resistance ratio that the structure flaps a machine through a resonance,gives the simulation results of SIR consistence coupling BPF; with the frequent resources becoming more and more limited, the design technology of filters with high frequent selecting characteristics becomes a important study field. Combined the character of create zero transport point of parallel connection Open route, two filter structures of the BPF with a pair of zero transport points near the frequent respond band are proposed, the mechanisms of transport zero is analyzed, and in the last, the simulation and test result of filer design example are given.