Hyperbolic Lens Horn Antenna for Fixed-Beam E-Band Communication

Abstract

The paper presents hyperbolic lens horn antenna for fixed-beam millimeter wave backhaul system. The frequency ranges of 71/76 GHz and 81/86 GHz (E-band) which are perspective for the future point-to-point 5G communications are fully covered. The dielectric material of high-density polyethylene (HDPE) with εr = 2.29 and tanδ = 0.0008 is used for lens design and the stepped rectangular to circular waveguide transition is designed to feed the antenna. The measured realized gain of proposed antenna exceeds 39 dBi, side-lobe suppression in both E and H planes is above 22.1 dB, what helps with directing the point-to-point microwave links, antenna is also relatively light with weight of only 2.4 kg and can comply with radiation pattern envelope of standard ETSI in class 2 (3).