Millimeter Wave Dual-Band Multi-Beam Waveguide Lens-Based Antenna

TL;DR

This paper presents a dual-band millimeter wave multi-beam antenna using a waveguide lens approach, achieving high gain and directional beams suitable for 5G applications.

Contribution

The design introduces a novel waveguide lens-based multi-beam antenna operating at 28 GHz and 31 GHz with three directional beams from a shared aperture.

Findings

Achieves around 15 dBi gain in each port

Supports dual-band operation at 28 GHz and 31 GHz

Generates three directional beams at -60°, 0°, and 60°

Abstract

A multi-beam antenna with a dual band operation in the 28 GHz and 31 GHz millimeter wave band is presented. The antenna has a gain of around 15 dBi in each of the three ports. The spatial footprint of the antenna is 166 mm x 123 mm x 34 mm. A waveguide lens-based approach is used to attain this gain. Cylindrical to planar wavefront transformation by a phase extraction and compensation method drives the design of the antenna. The dual band operation of the antenna aids in transmitting and receiving at two independent frequencies. Three beams originating from a shared aperture are designed to target directions of -60{\deg}, 0{\deg} and 60{\deg}. These features make the antenna a potential candidate for 5G millimeter wave applications.