Planar Realization of a Triple-Mode Bandpass Filter Using a Multilayer Configuration

Author

Lugo, Cesar ; Papapolymerou, John

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA

Volume

55

Issue

2

fYear

2007

Firstpage

296

Lastpage

301

Abstract

A triple-mode bandpass filter has been designed using a multilayer approach. The filter topology consists of a square loop resonator located inside a resonant cavity. The walls of the cavity were designed using periodic metal vias that connect the top and bottom ground planes for an overall planar configuration. A filter prototype was fabricated and measured, producing a fully canonical filtering function with three resonant poles and three transmission zeros. The filter yielded an insertion loss of 1.1 dB at the passband centered at 5.8 GHz

Keywords

band-pass filters; microwave filters; multilayers; poles and zeros; resonator filters; 1.1 dB; 5.8 GHz; degenerate modes; dual-mode filter; dual-mode resonator; fully canonical filtering function; microwave filter; multilayer configuration; periodic metal vias; planar configuration; resonant cavity; resonant poles; square loop resonator; transmission zeros; triangular loop resonator; triple-mode bandpass filter; triple-mode resonator; Band pass filters; Filtering theory; Insertion loss; Nonhomogeneous media; Passband; Poles and zeros; Prototypes; Resonance; Resonator filters; Topology; Degenerate modes; dual-mode filter; dual-mode resonator; triangular loop resonator; triple-mode resonator;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2006.889148

Filename

4084836