Beam-Squinting Reduction of Leaky-Wave Antennas Using Huygens Metasurfaces

PROJECT TITLE:

Beam-Squinting Reduction of Leaky-Wave Antennas Using Huygens Metasurfaces

ABSTRACT:

A novel approach is presented to reduce the beam squinting of radiating structures with stress on leaky-wave antennas (LWAs). This is often achieved by making the most of the attention-grabbing frequency-dependent variation of the generalized law of refraction in metasurfaces, together with the beam-squinting characteristics of LWAs dictated by their dispersion diagram. An X-band coplanar waveguide leaky-wave antenna (CPW-LWA) and a Huygens metasurface are fabricated and experimental results verify that the proposed concept will scale back the beam squinting of the LWA by fiftypercent over a ten% bandwidth at angles around broadside. The proposed methodology is shown to be an excellent approach to build easy, low-profile, and lowcost communication systems composed of LWAs with low beam-squinting characteristics over a reasonably wide frequency vary.

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