TY - GEN
T1 - Compact Square/Triangle Mixed-Shape Quarter-Mode Substrate Integrated Waveguide Bandpass Filter with Wide Stopband
AU - Kim, Phirun
AU - Wang, Qi
AU - Pech, Phanam
AU - Jeong, Junhyung
AU - Jeong, Yongchae
N1 - Publisher Copyright:
© 2019 European Microwave Association (EuMA).
PY - 2019/10
Y1 - 2019/10
N2 - In this paper, a new square/triangle mixed-shape quarter-mode substrate integrated waveguide (SIW) bandpass filter (BPF) is presented. Two transmission poles in the passband and two transmission zeros (TZs) in the stopband can be obtained by using a mixed quarter-mode cavity sharp. For an experimental validation, two-stage with square/triangle mixed-shape quarter-mode SIW BPF is designed at the center frequency (f0) of 8 GHz. From measurements, the insertion loss (S21) and return loss (S11) of 1.1 dB and 15.1 dB are obtained at f0, respectively. The passband insertion loss is better than 1.3 dB in the bandwidth of 0.87 GHz (7.55 8.42 GHz). The return losses better than 15.1 dB for the same bandwidth is measured. The two TZs in stopband make the attenuation characteristics better than 39.6 dB and 33 dB at 11.44 GHz and 15.67 GHz, respectively. And the proposed SIW BPF is compact due to mixed-shape quarter-mode shape.
AB - In this paper, a new square/triangle mixed-shape quarter-mode substrate integrated waveguide (SIW) bandpass filter (BPF) is presented. Two transmission poles in the passband and two transmission zeros (TZs) in the stopband can be obtained by using a mixed quarter-mode cavity sharp. For an experimental validation, two-stage with square/triangle mixed-shape quarter-mode SIW BPF is designed at the center frequency (f0) of 8 GHz. From measurements, the insertion loss (S21) and return loss (S11) of 1.1 dB and 15.1 dB are obtained at f0, respectively. The passband insertion loss is better than 1.3 dB in the bandwidth of 0.87 GHz (7.55 8.42 GHz). The return losses better than 15.1 dB for the same bandwidth is measured. The two TZs in stopband make the attenuation characteristics better than 39.6 dB and 33 dB at 11.44 GHz and 15.67 GHz, respectively. And the proposed SIW BPF is compact due to mixed-shape quarter-mode shape.
KW - bandpass filter
KW - quarter-mode resonator
KW - substrate integrated waveguide
UR - https://www.scopus.com/pages/publications/85076342789
U2 - 10.23919/EuMC.2019.8910853
DO - 10.23919/EuMC.2019.8910853
M3 - Conference paper
AN - SCOPUS:85076342789
T3 - 2019 49th European Microwave Conference, EuMC 2019
SP - 448
EP - 451
BT - 2019 49th European Microwave Conference, EuMC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 49th European Microwave Conference, EuMC 2019
Y2 - 1 October 2019 through 3 October 2019
ER -