A novel leaky-wave antenna combining an image NRD guide and a strip circuit
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Knowledge AreaTeoría de la Señal y las Comunicaciones
SponsorsThis work was supported by Spanish National Projects ESP2001-4546-PE and TIC2000-0591- C03-03, and Regional Seneca Project 2002 PB/4/FS/02.
PublisherIEEE Antennas and Propagation Society
Bibliographic CitationGÓMEZ TORNERO, José Luis, PASCUAL GARCÍA, Juan, ÁLVAREZ MELCÓN, Alejandro. A Novel Leaky-Wave Antenna Combining an Image NRD Guide and a Strip Circuit.. IEEE Antennas and Wireless Propagation Letters , 4: 289-292, Agosto 2005. ISSN 1536-1225
KeywordsAntena de fuga de ondas
Antena de onda milimétrica
Tecnología de circuito impreso
Leaky wave antenna (LWA)
Millimeter wave antenna
NRD (nonradiative dielectric) guide
Printed circuit technology
This letter presents a novel leaky-wave antenna which combines an image NRD (nonradiative dielectric) guide and a printed strip circuit. The proposed structure allows for an easier, cheaper and more flexible tapering mechanism than all previous leaky-wave antennas in NRD technology. The working mechanism is explained, and two different tapering strip-circuit topologies are proposed. Cosine tapered illuminations are designed using a two-dimensional leaky-mode analysis technique. Simulations with high-frequency structure simulator (HFSS) three-dimensional analysis are presented for validation purposes. Also, the influence of the feeding transitions for each printed-circuit design is studied. Results show the feasibility of one of the proposed designs, leading to a tapered radiation pattern with sidelobes level below 20 dB.
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