Open AccessDesign of Quasi-Elliptic Bandpass Filter for Substrate Integrated Waveguide (SIW) Using Cross Coupling Technique
Author(s) -
Muhajir Mustapa,
Zahriladha Zakaria,
Noor Azwan Shairi
Publication year - 2018
Publication title -
indonesian journal of electrical engineering and computer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.241
H-Index - 17
eISSN - 2502-4760
pISSN - 2502-4752
DOI - 10.11591/ijeecs.v12.i3.pp1366-1372
Subject(s) - passband , band pass filter , return loss , center frequency , bandwidth (computing) , insertion loss , filter (signal processing) , coupling (piping) , elliptic filter , waveguide , spurious relationship , materials science , prototype filter , physics , optoelectronics , low pass filter , optics , telecommunications , computer science , engineering , electrical engineering , machine learning , antenna (radio) , metallurgy
This paper proposes a quasi-elliptic band pass filter in substrate integrated waveguide (SIW) by using cross coupling technique to produce transmission zeros (TZs) at both side. Finally, a fourth pole SIW quasi-elliptic filter at 5.75 GHz is designed in single layer substrate. Simulation results show that the filter has a center frequency of 5.75 GHz with the bandwidth of 100 MHz. The minimum insertion loss in the passband is 0.3 dB, and the return loss is better than 20 dB. Due to the TZs, the SIW filter has rapid transition performance at both lower and upper sidebands, good selectivity is achieved, while the SIW filter presents a very compact implementation and good spurious rejection.