25 research outputs found

    A novel leaky-wave antenna combining an image NRD guide and a strip circuit

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    Control of leaky-mode propagation and radiation properties in hybrid dielectric-waveguide printed-circuit technology: Experimental results

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    Experimental results are presented to show how a planar circuit, printed on a laterally shielded dielectric waveguide, can induce and control the radiation from a leaky-mode. By studying the leaky-mode complex propagation constant, a desired radiation pattern can be synthesized, controlling the main radiation characteristics (pointing direction, beamwidth, sidelobes level) for a given frequency, This technique leads to very flexible and original leaky-wave antenna designs. The experiments show to be in very good agreement with the leaky-mode theory.This work was supported in part by Spanish national projects ESP2001-4546-PE, TEC2004- 04313-C02-02-TCM and in part by regional Séneca project 2002 PB/4/FS/02

    Printed-circuit leaky-wave antenna with pointing and illumination flexibility

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