A Compact Dual-Band Quasi-Elliptic Filter Based on Hybrid SIW and Microstrip Technologies

• Published in: IEEE transactions on circuits and systems. II, Express briefs Vol. 69; no. 3; pp. 719 - 723
• Main Authors: Zhu, Yilong, Dong, Yuandan
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.03.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Band-pass filters; Compact size; Couplings; Cross coupling; Dual band; dual-band filter; independent coupling paths; Microstrip filters; Mutual coupling; Optimization; Passband; quasi-elliptic response; Resonator filters; Resonators; Selectivity; substrate integrated waveguide (SIW); Substrate integrated waveguides; uniform impedance resonator (UIR)

In this brief, by combining substrate integrated waveguide (SIW) and microstrip technologies, a novel dual-band filter is proposed to achieve a quasi-elliptic response for both passbands. The dual-mode characteristics of the SIW cavities, namely TE 101 and TE 201 modes, are used to create two passba...