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

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 networ...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2008-06, Vol.56 (6), p.1405-1412
Main Authors: Gomez-Tornero, J.L., Quesada-Pereira, F.D., Alvarez-Melcon, A.
Format: Article
Language:English
Subjects:
Antennas
Apertures
Applied sciences
Dielectrics
Dispersions
Equations
Equivalence
Equivalent circuits
Exact sciences and technology
Formulations
Impedance
Leaky wave antennas
Loaded antennas
Mathematical analysis
Microwave propagation
Microwaves
Modal analysis
Networks
Nonradiative dielectric (NRD) leaky-wave antennas
Radiocommunications
Resonance
stub-loaded leaky-wave antennas
Telecommunications
Telecommunications and information theory
transverse equivalent circuit
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Summary: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 (TE 1 Z and TE 1 Z ). The obtained network is an alternative to the one based on hybrid TE 1 V and TE 1 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.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2008.923880