Title :
Highly Selective Microstrip Bandpass Filters in Ka-Band
Author :
Yan, Yu-Meng ; Chang, Ying-Tang ; Wang, Huei ; Wu, Ruey-Beei ; Chen, Chun Hsiung
Author_Institution :
Department of Electrical Engineering and Graduate Institute of Communication Engineering, National Taiwan University, Taipei 106, Taiwan. Tel: 886-2-23635251-x221, Fax: 886-2-23638247
Abstract :
Highly selective microstrip bandpass filters in Ka-band are developed by suitably inserting the attenuation poles in an edge-coupled structure. The attenuation poles at the high and low passband edges are introduced by adding a capacitively coupled gap and tapped open stubs in the conventional microstrip edge-coupled filter. In this study, the improved filters with center frequencies at 28 GHz and 38 GHz are fabricated on Teflon and Al2O3 substrates. Both filters have better selectivity and occupy the same area when compared with the conventional edge-coupled filter.
Keywords :
Attenuation; Band pass filters; Coupling circuits; Frequency; Insertion loss; Microstrip filters; Microwave filters; Passband; Resonator filters; Transceivers;
Conference_Titel :
Microwave Conference, 2002. 32nd European
Conference_Location :
Milan, Italy
DOI :
10.1109/EUMA.2002.339203
