Coplanar waveguide (CPW) periodic structures with resonant elements on ground plane have been investigated for lowpass and bandstop filter applications. The resonator is constructed by etching out redial shapes on the ground plane. The use of resonant elements allows larger attenuation in the stop band to be obtained with less number of periodic structures as compared with conventional photonic bandgap (PBG) structures. A theoretical study of this type of periodic structure has revealed some useful information for designing filters. Two filters of this type, one for lowpass application and the other for bandstop application have been designed, fabricated and tested. The results are presented.
|Number of pages||4|
|Journal||IEEE MTT-S International Microwave Symposium Digest|
|Publication status||Published - 2003|
|Event||2003 IEEE MTT-S International Microwave Symposium Digest - Philadelphia, PA, United States|
Duration: 8 Jun 2003 → 13 Jun 2003