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Design of Multi-Band Bandpass Filters Using Short-Circuited Stub Loaded Meander Loop Resonator

In the paper, a novel microstrip filter is proposed. The proposed structure has been used the meander loop resonator loading short- circuited stub. The meander square ring structure has achieved miniaturization and greatly reduced radiation loss of filter. The method of loading short-circuited stub to the resonator can excite the degenerate modes. The design of the filter feeder is leaded into the coupling of the source and load. The three pass band filter has been implement, which is obtained an ideal frequency response.