A novel leaky-wave antenna combining an image NRD guide and a strip circuit
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 mech...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2005 |
| País: | España |
| Institución: | Universidad Politécnica de Cartagena(UPCT) |
| Repositorio: | Repositorio Digital UPCT |
| OAI Identifier: | oai:repositorio.upct.es:10317/666 |
| Acceso en línea: | http://hdl.handle.net/10317/666 |
| Access Level: | acceso abierto |
| Palabra clave: | Antena de fuga de ondas Antena de onda milimétrica Guía NRD Tecnología de circuito impreso Antena cónica Leaky wave antenna (LWA) Millimeter wave antenna NRD (nonradiative dielectric) guide Printed circuit technology Tapered antenna Teoría de la Señal y las Comunicaciones |
| Sumario: | 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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