Ferrando Rocher, MiguelValero Nogueira, AlejandroHerranz Herruzo, José I.Teniente Vallinas, Jorge2019-12-202020-03-072019M. Ferrando-Rocher, A. Valero-Nogueira, J. I. Herranz-Herruzo and J. Teniente, '60 GHz Single-Layer Slot-Array Antenna Fed by Groove Gap Waveguide,' in IEEE Antennas and Wireless Propagation Letters, vol. 18, no. 5, pp. 846-850, May 2019. doi: 10.1109/LAWP.2019.29034751536-122510.1109/LAWP.2019.2903475https://academica-e.unavarra.es/handle/2454/35930A V-band single-layer low-loss slot-array antenna is presented in this letter. Radiating slots are backed by coaxial cavities, which are fed through a groove gap waveguide E-plane corporate feed network. Cavity resonances are created by shortening nails with respect to the surrounding ones. This fact enables a compact single-layer architecture since coaxial cavities and feeding network can share the same bed of nails. A 16 x 16 array is designed, constructed, and measured to demonstrate the viability of this concept for high-gain single-layer slot-array antennas. In addition, this solution can be extended to circular polarization by seamlessly adding a polarizer above the slots without changing the feeding network piece. Measurements show a relative bandwidth of 10% with input reflection coefficient better than -10 dB and a mean antenna efficiency above 70% within the operating frequency band (57-66 GHz).7 p.application/pdfeng© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other work.Circular polarizationGap waveguideHigh efficiencyMillimeter-wavePlanar arraysSlot array antennainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess