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

Author

Gómez-Tornero, José Luis ; Quesada-Pereira, Fernando Daniel ; Álvarez-Melcón, Alejandro

Author_Institution

Dept. of Commun. & Inf. Technol., Tech. Univ. of Cartagena, Cartagena

Volume

56

Issue

6

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

1405

Lastpage

1412

Abstract

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.

Keywords

equivalent circuits; leaky wave antennas; microwave antennas; evanescent fields; leaky mode dispersion curves; leaky wave analysis; microwave network; modal analysis; nonradiative dielectric guide technology; stub loaded leaky wave antennas; stub loaded structures; transverse equivalent network; transverse resonance equation; Nonradiative dielectric (NRD) leaky-wave antennas; stub-loaded leaky-wave antennas; transverse equivalent circuit;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2008.923880

Filename

4511504