Compactwideband Siw Based Bandpass Filter For X, Ku And K Band Applications

Duraisamy，Tharani1; Kamakshy，Selvajyothi1; Karthikeyan，Sholampettai Subramanian2; Barik，Rusan Kumar3; Cheng，Qingsha S.3

2021-06-01

10.13164/re.2021.0288

Radioengineering   影响因子和分区

1210-2512

This paper presents a miniaturized bandpass filter (BPF) with characteristics of wider passband and stopband rejection using substrate integrated waveguide (SIW) technology. Slot loading mechanisms deployed on the upper layer of SIW and defective ground structure (DGS) on the ground plane are utilized to achieve wider passband and stopband respectively. The slots on the top layer along with DGS significantly enhances the selectivity of the filter by generating three transmission zeros (TZs) on the upper side of the passband. The proposed filter is simulated using fullwave simulators and the performance is validated through fabrication and testing of the prototype. The proposed SIW filter exhibits a low insertion loss of 1.52 dB over a wider passband from 9.17 GHz to 20.31 GHz with a 3 dB fractional bandwidth (FBW) of 76%. Further, a wider upper stopband is achieved with the rejection of more than 16 dB in the frequency range of 23 GHz to 40 GHz. The filter provides a flat group delay response of approximately 0.19 ns over the wider passband. The electrical size of the fabricated prototype is 1.05λ* 0.67λ, where λdenotes the guided wavelength in the dielectric substrate for the designed center frequency of 16 GHz.

band pass filter bow-tie shaped slot compact Substrate integrated waveguide transmission zero

SCI

英语

其他

Engineering

Engineering, Electrical & Electronic

WOS:000719147800004

SPOLECNOST PRO RADIOELEKTRONICKE INZENYRSTVI

2-s2.0-85108516857

Scopus

1.Dept. of Electronics and Communication Engineering,Indian Institute of Information Technology Design&Manufacturing(IIITDM) Kancheepuram,Chennai,600127,India
2.Dept. of Electronics and Communication Engineering,National Institute of Technology,Tiruchirappalli,620015,India
3.Dept. of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,China

Duraisamy，Tharani,Kamakshy，Selvajyothi,Karthikeyan，Sholampettai Subramanian,et al. Compactwideband Siw Based Bandpass Filter For X, Ku And K Band Applications[J]. Radioengineering,2021,30(2):288-295.

Duraisamy，Tharani,Kamakshy，Selvajyothi,Karthikeyan，Sholampettai Subramanian,Barik，Rusan Kumar,&Cheng，Qingsha S..(2021).Compactwideband Siw Based Bandpass Filter For X, Ku And K Band Applications.Radioengineering,30(2),288-295.

Duraisamy，Tharani,et al."Compactwideband Siw Based Bandpass Filter For X, Ku And K Band Applications".Radioengineering 30.2(2021):288-295.