Design of a Horn - RADANT Lens antenna with electronic beam scanning for Ka Band

Luis Alejandro Iturri Hinojosa, Alexander E. Martynyuk, José Luis López Bonilla

Abstract


The design of a Horn-RADANT lens with electronic beam scanning for the Ka frequency band is presented. The prototype of the antenna consists of a 2bit Radant lens installed on the aperture of an E-sectorial horn antenna. A pair of grids, with rectangular slot antenna printed on dielectric substrate with PIN diode switch as load in each node generates 90° phase shift of the incident wave with reflection coefficient lower than -4.3 dB, and a transmission coefficient above -0.34 dB. The lens performance designed with three pair of grids, over an E-polarized plane wave, is experimentaly verified. Using a mathematical model for the design, the RADANT lens geometry and the adecuate configuration of the bias switches have been obtained, reaching electronic beam-steering angles of 11.35° and 8.6°, both of them with directivity greater than 14 dB.

Keywords


Radant lens; E-sectorial horn antenna; electronically beam scanning; and p-i-n diode switches

References


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DOI: https://doi.org/10.21640/ns.v9i18.684

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Nova Scientia, year 9, issue 19, November 2017 – April 2018, is a biannual journal printed by the Universidad De La Salle Bajío, with its address: Av. Universidad 602, Col. Lomas del Campestre, C. P. 37150, León, Gto. México. Phone: (52) 477 7108500, e-mail: http://nova_scientia.delasalle.edu.mx. Chief editor: Ph.D. Rolando Pérez Álvarez and Ph.D. Ramiro Rico Martínez. ISSN 2007 - 0705. Copyright for exclusive use No. 04-2008-092518225500/102, Diffusion rights via computer net 04 - 2008 – 121011584800-203 both granted by the Instituto Nacional del Derecho de Autor.

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