Open AccessDual-band bandpass filter based on two U-shaped defected microstrip structure
Author(s) -
Mussa Mabrok,
Zahriladha Zakaria,
Yully Erwanti Masrukin,
Tole Sutikno
Publication year - 2021
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.v22.i2.pp909-918
Subject(s) - band pass filter , microstrip , bandwidth (computing) , wimax , return loss , filter (signal processing) , attenuation , materials science , insertion loss , electronic engineering , m derived filter , band stop filter , high pass filter , multi band device , optoelectronics , wireless , electrical engineering , low pass filter , computer science , telecommunications , engineering , physics , optics , antenna (radio)
This paper presents design of dual-band bandpass filter by integrating conventional quarter-wavelength short circuit stubs bandpass filter with U-shaped defected microstrip structure notch filter. Based on the parametric analysis, it is found that high attenuation level can be achieved by using two U-shaped defected microstrip structure separated by specific distance. The designed circuit simulated using advanced design system and fabricated based on Roger 4350B. The simulation results are in good agreement with measured results. The designed filter covered two pass bands centered at 2.51 GHz and 3.59 GHz with 3-dB fractional bandwidth of 15.94% and 15.86%, respectively, return losses better than 15 dB, and insertion losses better than 1 dB. The designed device can be used for wireless communication applications such as WLAN and WiMAX.