Dual-Band Substrate Integrated Waveguide Filters With Perturbed Circular Cavity

• Published in: IEEE microwave and wireless components letters Vol. 32; no. 4; pp. 293 - 296
• Main Authors: Yang, Xian-Long, Zhu, Xiao-Wei, Wang, Xiang
• Format: Journal Article
• Language: English
• Published: IEEE 01.04.2022
• Subjects: Circular cavity; Couplings; Dual band; Filtering theory; Passband; Perturbation methods; Resonant frequency; substrate integrated waveguide (SIW); Substrates; via perturbation

In this letter, a novel dual-band substrate integrated waveguide (SIW) filter with the perturbed circular cavity is presented. By introducing three kinds of metallic via perturbations combining different angles of feeding lines, five resonant modes TM 010 , TM 110 (a pair of degenerate modes), and T...