C-band SIW Bandpass Filters on High-Permittivity Ceramic Substrates
Résumé
This paper introduces an effective way to build efficient miniature SIW (Substrate Integrated Waveguide) Cband filters, using high-permittivity ceramics. The objective is to evaluate the feasibility of such filters in relation with commercial electromagnetic simulators and a conventional fabrication process. The solution proposed in this paper is based on a ceramic substrate with a permittivity of 90, which allowed us to work with shorter wavelengths. In comparison with a standard alumina substrate (permittivity εr = 9.9), it makes it possible to reduce the footprint up to nine times.