Design of a miniaturized ultra wideband bandpass filter based on a hybrid lumped capacitors - distributed transmission lines topology

Author

Kaddour, Darine ; Arnould, Jean-Daniel ; Ferrari, Philippe

Author_Institution

Inst. de Microelectronique, d´´Electromagnetisme et de Photonique, IMEP, Grenoble

fYear

2006

fDate

10-15 Sept. 2006

Firstpage

1264

Lastpage

1266

Abstract

In this paper, a miniaturized UWB bandpass filter using a hybrid lumped capacitors-distributed transmission lines topology is designed. The filter design rules are carried out and a filter is optimized for a 3 dB fractional bandwidth of 127 % with criteria of compacity, matching and selectivity. A sensitivity study versus critical parameters is also given. The filter length is reduced to 0.18lambda @ 6.5 GHz in comparison with 0.54lambda for the distributed topology. The selectivity is improved with a shape factor equal to 1.28:1 instead of 1.46:1

Keywords

band-pass filters; microwave filters; transmission lines; ultra wideband technology; 6.5 GHz; distributed topology; hybrid circuit; hybrid lumped capacitors-distributed transmission lines topology; miniaturized ultra wideband bandpass filter; Band pass filters; Bandwidth; Capacitors; Low pass filters; Matched filters; Microstrip filters; Resonator filters; Topology; Transmission lines; Ultra wideband technology; Ultra wideband (UWB); bandpass filter (BPF); hybrid circuit; microstrip;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. 36th European

Conference_Location

Manchester

Print_ISBN

2-9600551-6-0

Type

conf

DOI

10.1109/EUMC.2006.281225

Filename

4058059