Open AccessCompact UWB BPF with notch band based on SW‐HMSIW
Author(s) -
Li Jiao,
Ding Chen,
Wei Feng,
Wei Shi Xiao
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.0449
Subject(s) - band pass filter , resonator , microstrip , materials science , ultra wideband , passband , band stop filter , spiral (railway) , filter (signal processing) , optoelectronics , substrate (aquarium) , waveguide , center frequency , optics , physics , electronic engineering , low pass filter , electrical engineering , engineering , mechanical engineering , oceanography , geology
A compact ultra‐wideband (UWB) bandpass filter (BPF) with a notch band based on a slow‐wave half‐mode substrate‐integrated waveguide (SW‐HMSIW) is proposed. The proposed SW‐HMSIW is believed to be the first ever reported. Similar to the slow‐wave substrate‐integrated waveguide (SW‐SIW), SW‐HMSIWs can achieve highpass characteristics, while the lateral width is reduced by about 50%. To obtain the UWB response, three spiral compact microstrip resonant cells are etched on the SW‐HMSIW as a lowpass filter. Moreover, a short‐circuited quarter wavelength L‐type resonator is used to achieve a notch band. To validate the design theory, a compact UWB BPF is designed and fabricated. The simulated results are compared with the measured results, and good agreement is reported.