Design of Miniaturized SIW Filter Loaded with Open-Loop Resonators and its Application to Diplexer

Barik, Rusan Kumar1; Cheng, Qingsha S.1,2; Pradhan, Nrusingha Charan3; Karthikeyan, Sholampettai Submaranian3

2020-12-01

10.13164/re.2020.0609

Radioengineering   影响因子和分区

1210-2512

This paper presents a novel design of miniaturized substrate-integrated waveguide (SIW) filter loaded with a pair of unit-cell resonators. Two identical open-loop resonators are connected face-to-face to form a unit-cell. A pair of unit-cells is engraved on the surface of the SIW to develop an evanescent-mode bandpass filter. The proposed unit-cells behave as an electric-dipole and produce a passband smaller than the waveguide frequency. This reduction in resonant frequency allows us to achieve size miniaturization. An equivalent electrical-circuit model is developed and investigate for characterization of passband and transmission-zero. This filter structure is then employed to develop a SIW planar diplexer. Two SIW filter structures loaded with unit-cells are excited with a T-shaped feed line to achieve lower and upper channels of the diplexer. To demonstrate the analysis, both SIW filter and diplexer loaded with open-loop resonators are implemented and fabricated. The proposed SIW filter and diplexer prototypes exhibit size miniaturization, low insertion-loss and high-selectivity due to evanescent-mode transmission and sub-wavelength resonators. The measurement responses are very similar to the simulation responses.

SIW filter diplexer open-loop resonator

SCI

英语

第一 ; 通讯

National Natural Science Foundation of China[61471258] ; University Key Research Project of Guangdong Province[2018KZDXM063]

Engineering

Engineering, Electrical & Electronic

WOS:000608251400003

SPOLECNOST PRO RADIOELEKTRONICKE INZENYRSTVI

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Univ Key Lab Adv Wireless Commun Guangdong Prov, Shenzhen 518055, Peoples R China
3.Natl Inst Technol, Dept Elect & Commun Engn, Tiruchirappalli 620015, Tamil Nadu, India

Barik, Rusan Kumar,Cheng, Qingsha S.,Pradhan, Nrusingha Charan,et al. Design of Miniaturized SIW Filter Loaded with Open-Loop Resonators and its Application to Diplexer[J]. Radioengineering,2020,29(4).

Barik, Rusan Kumar,Cheng, Qingsha S.,Pradhan, Nrusingha Charan,&Karthikeyan, Sholampettai Submaranian.(2020).Design of Miniaturized SIW Filter Loaded with Open-Loop Resonators and its Application to Diplexer.Radioengineering,29(4).

Barik, Rusan Kumar,et al."Design of Miniaturized SIW Filter Loaded with Open-Loop Resonators and its Application to Diplexer".Radioengineering 29.4(2020).