volume | PIER Journals

Abstract

Partially dielectric-filled empty substrate integrated waveguide (PFESIW) is introduced for millimeter-wave application alongside partially dielectric-filled ESIW filter by using inverter and resonators technique. The new design presents good transition implementation in order to introduce a waveguide compatible with planar integrated circuits. The main goal of introducing the new transmission line PFESIW is to control characteristic impedance without changing the cutoff frequency. The presented transmission line is analyzed by calculating attenuation constant α, phase constant β and characteristic impedance Z. The PFESIW is used to build a resonator with high-quality factor. The filter based on the combination of of ESIW and PFESIW is proposed. Furthermore, the designed filter showed very good performance in terms of bandwidth and cost. Transmission line and filter prototypes are manufactured using standard printed circuit board fabrication. Partially dielectric-filled ESIW measurement displays very good results in terms of phase constant β, attenuation constant α, return loss (S₁₁) and insertion loss (S₁₂). Measured return loss (S₁₁) and insertion loss (S₁₂) for waveguide and filter agree very well with simulation.

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Dr. Karrar Al Khanjar

Dr. Tarek Djerafi