K-Band Substrate-Integrated Waveguide Resonator Filter With Suppressed Higher-Order Mode

Author

Boyoung Lee ; Tae-Hak Lee ; Kangho Lee ; Man-Seok Uhm ; Juseop Lee

Author_Institution

Korea Univ., Seoul, South Korea

Volume

25

Issue

6

fYear

2015

fDate

Jun-15

Firstpage

367

Lastpage

369

Abstract

In this letter, we present a design method for K-band substrate-integrated waveguide (SIW) resonator filters utilizing TM₀₂ mode. More importantly, a methodology for suppressing an unwanted higher-order mode ( TM₁₁) close to the passband is demonstrated. It is shown that suppressing the unwanted mode give rise to the improved stopband performance. In addition, the resonator used in this filter design has capability of adjusting the resonant frequency, and this allows for compensating the fabrication error. Verification of the presented design method has been carried out by fabricating and measuring the filter.

Keywords

band-pass filters; resonator filters; substrate integrated waveguides; K-band substrate-integrated waveguide resonator filter; SIW; TM₀₂ mode; fabrication error; higher-order mode suppression; passband; resonant frequency; Couplings; Fabrication; K-band; Microstrip; Microwave filters; Resonant frequency; Substrates; ${rm TM}_{02}$ mode; Bandpass filter (BPF); K-band filter; feed-line; filter;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2015.2421313

Filename

7084694