Holographic Design of Arbitrary Multi-Beam Leaky-Wave Antennas

This paper proposes a versatile method for designing arbitrary multi-beam leaky-wave antennas that can be applied to the synthesis of di erent beams with di erent gains, or of more than two beams. The method is based on superposing multiple objective eld patterns in the context of the holographic design of a modulated impedance surface. In particular, dual-beam leaky-wave antennas with equal beam gains, and with relative gain di erences of 3dB and 6dB are demonstrated through full-wave simulations. In addition, the method has been experimentally validated by the fabrication of the design with equal beam gains. A good agreement between measurements and simulations has been observed.Grant numbers : This work received funding from the European Union's Horizon 2020 research and innovationprogramme under grant agreement No 645047 (SANSA); and from the Spanish Ministry of Economy and Competitiveness (Ministerio de Economia y Competitividad) under project TEC2014-59255-C3-1-R