Ultra-Wideband Ridged Half-Mode Folded Substrate-Integrated Waveguide Filters

Liwen Huang, Shufeng Zhang

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


In this letter, compact ultra-wideband filters are designed by employing a novel ridged half-mode folded substrate-integrated waveguide (RHMFSIW) and double-ridged half-mode SIW (DRHMSIW). The RHMFSIW is proposed by loading the half-mode folded substrate integrated waveguide with a ridge, where the ridge introduces additional capacitance hence leading to a lower cutoff frequency and a smaller size. Compact ultra-wideband filters are designed and fabricated based on the RHMFSIW. Another novel DRHMSIW is developed to implement the tight coupling required in the ultra-wideband filters. To improve the out-of-band rejection while keeping a small size, mixed coupling is employed in the ultra-wideband filter to generate transmission zeros. The proposed filters demonstrate the advantage of high selectivity, low loss, compact size, and easy integration with other electronic systems.

Original languageEnglish
Pages (from-to)579-581
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number7
Early online date24 May 2018
Publication statusPublished - 4 Jul 2018
Externally publishedYes


Dive into the research topics of 'Ultra-Wideband Ridged Half-Mode Folded Substrate-Integrated Waveguide Filters'. Together they form a unique fingerprint.

Cite this