Open AccessSubstrate integrated waveguide dual‐band filter with wide‐stopband performance
Author(s) -
Zhou Kang,
Zhou Chunxia,
Wu Wen
Publication year - 2017
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.2017.1556
Subject(s) - chebyshev filter , stopband , band pass filter , harmonics , materials science , substrate (aquarium) , coupling (piping) , filter (signal processing) , waveguide filter , prototype filter , spurious relationship , transition band , electronic engineering , optoelectronics , low pass filter , computer science , engineering , electrical engineering , oceanography , voltage , machine learning , geology , metallurgy
The first substrate integrated waveguide dual‐band bandpass filter with wide‐stopband performance is presented. This filter is synthesised and designed with fourth‐order Chebyshev responses and identical fractional bandwidths for the two passbands centred at 12 and 16 GHz. Multiple spurious resonances have been intrinsically suppressed by introducing the harmonics‐staggered technique and the centred coupling windows. Good agreements can be observed between the measured and simulated results, and better than 25‐dB rejection level up to 2.05 f 1 has been successfully achieved.