Wideband Grounded Coplanar Waveguide Bandpass Filter with Novel Coupling Structures

This paper presents a novel wideband grounded coplanar waveguide (GCPW) bandpass filter. The wideband filter was realized using coupled resonators. To achieve a wideband bandpass filter, strong coupling is required. Novel strong coupling structures between adjacent resonators and between resonator and input/output feedline are proposed. To support the newly proposed coupling structures, a wideband GCPW bandpass filter has been designed, simulated, fabricated and measured. The results of the test filter will be presented in this paper.