25 research outputs found
Simple control of the polarisation in uniform hybrid waveguide-planar leaky-wave antennas
Control of leaky-mode propagation and radiation properties in hybrid dielectric-waveguide printed-circuit technology: Experimental results
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