Microstrip leaky-wave antenna with control of leakage rate and only one main beam in the azimuthal plane
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Research GroupGrupo de Electromagnetismo Aplicado a las Telecomunicaciones (GEAT)
Knowledge AreaTeoría de la Señal y las Comunicaciones
SponsorsThis work was supported in part by the Spanish National project TEC2004-04313-C02-02/ TCM, in part by the Regional Seneca project 02972/PI/05, and in part by Regional Scholarship PMPDI-UPCT-2007.
PublisherIEEE Antennas and Propagation Society
Bibliographic CitationGÓMEZ TORNERO, José Luis, CAÑETE REBENAQUE, David, ÁLVAREZ MELCÓN, Alejandro. Microstrip leaky-wave antenna with control of leakage rate and only one main beam in the azimuthal plane. IEEE Transactions on Antennas and Propagation, 56 (2): 335-344, Febrero 2008. ISSN 0018-926X
KeywordsTipo de control de fugas
Antena de filtración de ondas
Blindaje lateral de tecnología microstrip
Laterally shielded microstrip technology
Leaky wave antenna (LWA)
Leakage rate control
An original leaky-wave antenna (LWA), conceived from a microstrip line which is laterally shielded by parallel plates, is presented in this paper. This structure shows, for the first time, that the leakage rate of a microstrip leaky-mode can be easily controlled while negligibly affecting the pointing direction. The antenna is based on the radiation from the second higher order mode of the microstrip line, which is perturbed by the addition of the two conductor walls to control the level of the leakage rate. The parallel-plates also serve as a mechanism to obtain a single main beam in the azimuthal plane, therefore improving the radiation pattern compared to common dual-beam second-higher order mode microstrip LWAs. The proposed antenna is analyzed by obtaining the corresponding leaky-mode complex propagation constant, which is calculated by a specific method of moments approach. The modal results obtained from the leaky-mode dispersion curves are validated with analysis ...
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