4.7 Article

A Dual-Polarized 27 dBi Scanning Lens Phased Array Antenna for 5G Point-to-Point Communications

期刊

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 69, 期 9, 页码 5640-5652

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2021.3069494

关键词

Fifth generation (5G); leaky-wave antenna (LWA); lens antenna; millimeter wave; sparse phased array antenna (PAA)

资金

  1. European Research Council Starting Grant, ERC-2014-StG LAA-THz-CC [639749]

向作者/读者索取更多资源

This paper presents a dual-polarized 4x4 scanning phased array antenna operating at 28 GHz, which utilizes leaky-wave enhanced lenses to achieve high gain, wide bandwidth, and limited steering ranges for 5G communications. The design features a periodicity of two wavelengths and suppresses grating lobes with directive and steerable array element patterns.
A dual-polarized 4 x 4 scanning phased array antenna with leaky-wave enhanced lenses operating at 28 GHz is presented. Such an antenna can be used for point-to-point fifth-generation (5G) communications that require high gain, wide bandwidth (BW), and limited steering ranges. The proposed array has a periodicity of two wavelengths, and the resulting grating lobes are suppressed by directive and steerable array element patterns. To achieve a low-cost and low-profile solution, the leaky-wave antenna feeds are designed in printed circuit board and the lenses are made of plastic. The lenses are optimized in the near-field region of the feeds, with the goal of maximizing the array element aperture efficiency. The array performance obtained from the proposed approach is validated by full-wave simulations, showing a 27.5 dBi broadside gain at 28 GHz and a steering capability up to +/- 20 degrees with 2 dB of scan loss. An antenna prototype was fabricated and measured. Measurement results are in excellent agreement with full-wave simulations. The prototype antenna, at broadside, achieves a 20% relative BW and a gain of 26.2 dBi.

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