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Type: Conference paper
Title: On the transition from radiating to guiding behavior of the half-mode substrate integrated waveguide
Author: Lai, Q.
Fumeaux, C.
Hong, W.
Citation: Proceedings of the Asia-Pacific Microwave Conference(APMC 2010), December 7–10 2010; pp. 1601-1604
Publisher: IEICE
Publisher Place: Japan
Issue Date: 2010
Series/Report no.: Asia Pacific Microwave Conference-Proceedings
ISBN: 9784902339222
Conference Name: Asia-Pacific Microwave Conference (2010 : Yokohama, Japan)
Statement of
Qinghua Lai, Christophe Fumeaux and Wei Hong
Abstract: The transition from radiative to guiding behavior of a half-mode substrate integrated waveguide (HMSIW) is studied throughout this work. The electric near-field distribution in the substrate plane is first demonstrated at different frequencies over the mono-mode operation band and is then related to far-field radiation patterns. The observation shows that the HMSIW, as a semi-open transmission line, suffers from relatively large radiation loss as it operates at frequencies just above the cut-off. However, the radiated power drops drastically with the increase of frequency. In particular, the attenuation caused by radiation becomes negligible as the frequency increases beyond a critical point. An explanation is given to the phenomena above and an approximate equation is also proposed for estimating the critical frequency point, as low-frequency limit of the HMSIW operational range. These results provide a physical confirmation of the optimal operation frequency range for the use of HMSIW as a low-loss waveguide.
Keywords: Half-mode substrate integrated waveguide, radiation loss
Rights: Copyright 2010 IEICE. © Copyright 2010 IEEE.
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Electrical and Electronic Engineering publications

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