A Novel Single-Cavity Dual Mode Substrate Integrated Waveguide Filter With Non-Resonating Node

• Published in: IEEE microwave and wireless components letters Vol. 19; no. 6; pp. 368 - 370
• Main Authors: WEI SHEN, YIN, Wen-Yan, WEI, Qi-Fu, MAO, Jun-Fa, SUN, Xiao-Wei
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.06.2009; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Circuit properties; Coplanar waveguide (CPW); Coplanar waveguides; Couplings; Dielectric substrates; doublet; dual mode; Electric, optical and optoelectronic circuits; Electronic circuits; Electronics; Etching; Exact sciences and technology; filter; Filtering theory; Frequency; Frequency filters; Holes; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; Microwaves; non-resonating node (NRN); Resonator filters; S-parameters; Scattering parameters; Selectivity; Simulation; substrate integrated waveguide (SIW); Sun; Topology; Waveguide filters; Waveguides; Performance evaluation; Waveguide filters; non-resonating node (NRN); dual mode; Substrate integration; S-parameters; Waveguide; Implementation; filter; Engraving; Frequency selection; Cavity; doublet; s parameter; Coplanar waveguide (CPW); substrate integrated waveguide (SIW); Coplanar waveguides; Comparative study
• ISSN: 1531-1309; 1558-1764
• DOI: 10.1109/LMWC.2009.2020017

A single-cavity novel dual mode substrate integrated waveguide (SIW) filter with non-resonating node (NRN) is presented. The NRN is implemented by etching a coplanar waveguide on the top metal layer of SIW cavity. Under such circumstances, the filter occupies similar area in comparison with conventional two-pole SIW counterparts, but exhibits better frequency selectivity. The measured S-parameters of the realized filter agree well with the simulated ones, with its good performance predicted.