A low-loss Ka-band Waveguide to Substrate Integrated Waveguide Transition Based on Ridged Stepped-Impedance Transformer

Jose Garcia Perez, George Goussetis, Haijun Fan, Yuan Ding

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Abstract

In this paper, a low-loss Ka-band transition from waveguide to substrate
integrated waveguide (SIW) is presented based on ridge waveguide
stepped-impedance transformer. This novel transition can operate across
full Ka-band (26.5 GHz to 40 GHz) with insertion loss lower than 0.59
dB and return loss over 14.2 dB. Furthermore, compared to existing
transitions the introduction of ridges reduces the metal usage, resulting
in a weight reduction and offering an encouraging application for weight
sensitive satellite communications (SatComs).
Original languageEnglish
JournalElectronics Letters
Publication statusAccepted/In press - 22 Apr 2021

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