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Novel Microwave Network for the Leaky-Wave Analysis of Evanescent Fields in Stub-Loaded Structures

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3 Author(s)
Gomez-Tornero, J.L. ; Dept. of Commun. & Inf. Technol., Tech. Univ. of Cartagena, Cartagena ; Quesada-Pereira, F.D. ; Alvarez-Melcon, A.

In this paper, a new transverse equivalent network for the modal analysis of stub-loaded leaky-wave antennas is developed. The derived network is useful for the study of the radiation of evanescent fields that occurs when they reach the top aperture of the parallel-plate stub. This transverse network is based, for the first time, on a nonhybrid formulation of the constituent parallel-plates modes of order 1 (TE1 Z and TE1 Z ). The obtained network is an alternative to the one based on hybrid TE1 Vand TE1 V modes, and leads to a simpler transverse resonance equation. The new equivalent network is validated by obtaining leaky-mode dispersion curves for a previously studied leaky-wave antenna in non- radiative dielectric guide technology.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:56 ,  Issue: 6 )