Compact folded substrate integrated waveguide filter with non-resonating nodes for high-selectivity bandpass applications

Author

Salehi, Marzieh ; Bornemann, Jens ; Mehrshahi, Esfandiar

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Victoria, Victoria, BC, Canada

fYear

2013

fDate

6-10 Oct. 2013

Firstpage

155

Lastpage

158

Abstract

A fifth-order pseudo elliptic substrate integrated waveguide (SIW) filter based on non-resonating nodes is presented for high-selectivity bandpass applications. Three singlets and two fundamental-mode resonators are properly cascaded in a folded, thus compact topology. After optimization of the coupling apertures, the filter produces three transmission zeros for improved selectivity. An SIW filter prototype with a center frequency of 11 GHz and 600 MHz bandwidth is designed using HFSS and fabricated on RT/Duroid 5870 substrate. The measured results are in very good agreement with simulations and show excellent out-of-band rejection performance.

Keywords

band-pass filters; elliptic filters; microwave filters; network topology; optimisation; poles and zeros; resonator filters; substrate integrated waveguides; waveguide filters; HFSS; RT/Duroid 5870 substrate; band-pass filters; bandwidth 600 MHz; compact folded substrate integrated waveguide filter; frequency 11 GHz; nonresonating nodes; out-of-band rejection performance; pseudoelliptic substrate integrated waveguide filter; transmission zeros; Band-pass filters; Couplings; Electromagnetic waveguides; Filtering theory; Microwave filters; Resonator filters; Substrates; Substrate integrated waveguide (SIW); bandpass filter; folded filter; non-resonating node; pseudo-elliptic filter; singlets; transmission zero;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2013 European

Conference_Location

Nuremberg

Type

conf

Filename

6686614