Design of Microwave Lossy Filter Based on Substrate Integrated Waveguide (SIW)

Author

Szydlowski, Lukasz ; Lamecki, Adam ; Mrozowski, Michal

Author_Institution

Dept. of Electron., Telecommun. & Inf., Gdansk Univ. of Technol., Gdańsk, Poland

Volume

21

Issue

5

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

249

Lastpage

251

Abstract

In this letter, we propose a lossy three-pole Chebyshev filter centered at 5.15 GHz, based on the substrate integrated waveguide (SIW) with scattering characteristics shifted down by 5.68 dB. The filter is composed of three directly coupled SIW cavities with three lossy couplings between nonadjacent resonators. These additional couplings are realized using mixed coupled slot and microstrip lines connected with metal electrode leadless face (MELF) resistors. The filter was fabricated using a standard printed circuit board (PCB) process, and good agreement between the simulated and measured results has been achieved.

Keywords

Chebyshev filters; microstrip filters; microstrip lines; microwave filters; printed circuits; resonator filters; substrate integrated waveguides; PCB process; SIW; coupled SIW cavity; frequency 5.15 GHz; lossy three-pole Chebyshev filter; metal electrode leadless face resistors; microstrip lines; microwave lossy filter design; mixed coupled slot lines; nonadjacent resonators; printed circuit board; scattering characteristics; substrate integrated waveguide; Cavity resonators; Couplings; Microwave circuits; Microwave filters; Resistors; Substrates; Bandpass filters (BPFs); lossy filters; planar transmission lines; substrate integrated waveguide (SIW);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2011.2119471

Filename

5739126