Design of a Half-Mode Substrate-Integrated Waveguide (HMSIW) Multimode Resonator Bandpass Filter Using the Minkowski Fractal for C-Band Applications

被引：0
|
作者：
Muchhal, Nitin [1 ]
Kumar, Abhay [1 ]
Tewari, Nidhi [1 ]
Kalia, Samriti [1 ]
Srivastava, Shweta [1 ]
机构：
[1] Department of ECE, Jaypee Institute of Informaton Technology, UP, Noida,201309, India
来源：
Micromachines | 2024年 / 15卷 / 12期
关键词：
A substrate-integrated waveguide (SIW) bandpass filter (BPF) with extraordinary selectivity and an adequate upper stopband for C-band Satellite Communication (SATCOM) applications is proposed in this paper. The design comprises comb-shaped slots engraved on a half-mode SIW (HMSIW) that constitute a multimode resonator (MMR). Its performance is further ameliorated by applying the first and second iterations of the Minkowski fractal curve in the ground plane as a defected ground structure (DGS). The Minkowski fractal has advantages in terms of better bandwidth and miniaturization. The filter is first simulated using the commercial full-wave electromagnetic simulator HFSS v19 and then fabricated on a 0.062′′ (1.6 mm) FR4 with dielectric constant Εr = 4.4. The measured results are comparable with the simulated ones and demonstrate that the BPF has a resonant frequency (f0) of 4.75 GHz; a 3 dB bandwidth of 770 MHz (fractional bandwidth of 21.4%); an insertion loss of 1.05 dB; and an out-of-band rejection (in the stopband) of more than 28 dB up to 8 GHz; demonstrating a wide and deep stopband. Using the multimode resonator (MMR) technique; a wide bandwidth has been achieved; and by virtue of using half-mode SIW (HMSIW); the proposed BPF is compact in size. Also; the fractal DGS aids in better stopband performance. © 2024 by the authors;
D O I：
10.3390/mi15121440
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