Novel compact single-band and dual-band bandpass filter based on one-third-mode substrate integrated waveguide

IEICE Electronics Express

Jia-Sheng Hong¹  Fa-Lin Liu²  Jia-Yu Rao³  Jun-Jie Cheng³  Xue-Dong Fu³  Sheng Zhang³ 

[1] Department of Electrical, Electronic and Computer Engineering, Heriot-Watt University;Department of Electronic Engineering and Information Science, University of Science and Technology of China;School of Information and Control Engineering, China University of Mining and Technology

关键词: single-band BPF;    dual-band BPF;    dual-mode;   

DOI  :  10.1587/elex.14.20170832

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

In this paper, a novel structure of One-Third-Mode Substrate Integrated Waveguide Resonator (OTMSIWR) is first proposed, which reduces about 65% size. Based on the OTMSIWR, a single-band bandpass filter (BPF) operats at 4.55 GHz is designed. The single-band BPF has a wide and deep upper stopband. Further, a dual-band BPF using high mode technology based on the single-band filter is designed. The fundamental mode (TM101 mode) and high mode (TM201 mode) are utilized to achieve the dual-band response. The center frequencies locate at the 4.2 GHz and 6.15 GHz, respectively. Two transmission zeros (TZs) are achieved in the dual-band BPF by adjusting the positions of the feeds. To further improve the selectivity of the upper stopband of the dual-band BPF, two pairs of Complementary Split-Ring Resonators (CSRRs) are introduced on the surface of the OTMSIWR, which obtain the desired results. Finally, a single-band BPF and a dual-band BPF are fabricated and tested. The measured results agreed well with the simulated ones, which proved that the proposed structure is a good candidate to design filters.

【 授权许可】

CC BY