Title :
A Novel Miniature Suspended Stripline Filter
Author :
Menzel, Wolfgang
Author_Institution :
Microwave Techniques, University of Ulm, D-89069 Ulm, Germany, Tel.: +49-731-50-26350, E-mail: wolfgang.menzel@ieee.org
Abstract :
Concept, design, and results of a novel miniature suspended stripline (SSL) filter type based on an interdigital filter structure with quasi-lumped elements are presented. The filter is realized in a metal channel of 4.25 mm × 5 mm. Compared to a standard SSL resonator, length is reduced by about 75%. A three resonator filter at 7 GHz with a 450 MHz bandwidth is demonstrated, having a filter length of only 12 mm and losses of about 1.4 dB, including 18 mm of excess transmission line and the transitions to coaxial line. Further examples are a three-resonator filter at 11 GHz and a 8 GHz five-resonator filter.
Keywords :
Capacitance; Distributed parameter circuits; Equivalent circuits; Frequency; Inductance; Microwave filters; Propagation losses; Resonator filters; Stripline; Strips;
Conference_Titel :
Microwave Conference, 2003 33rd European
Conference_Location :
Munich, Germany
Print_ISBN :
1-58053-834-7
DOI :
10.1109/EUMA.2003.340839
