Compact Folded Fresnel Zone Plate Lens Antenna for Mm-wave Communications
Résumé
A low-profile single-polarized folded Fresnel zone plate lens antenna is presented for 5G millimeter-wave point-to-point communications in V-band. This antenna has two benefits: compactness of folded reflector structures made of a trans-reflector and a twist-reflector, and simplicity of Fresnel zone plate lenses. The idea of the folded structure is to triple the electrical path compared to non-folded configurations. Combination of all these benefits leads to a very low profile, high directive, broadband, and low cost antenna, as confirmed by measurements. A measured peak gain of 32.7 dBi is obtained at 60 GHz, with almost flat gain curve from 57 to 64 GHz, with a half power beam beam width of 3°, compliant with ETSI V-band class 2 standard.