PCB-Based Design of a Beamsteerable Array With High-Gain Antennas and a Rotman Lens at 28 GHz

被引:19
作者
Heino, Mikko [1 ]
Icheln, Clemens [1 ]
Haarla, Jaakko [1 ]
Haneda, Katsuyuki [1 ]
机构
[1] Aalto Univ, Sch Elect Engn, Dept Elect & Nanoengn, Espoo 00076, Finland
来源
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2020年 / 19卷 / 10期
基金
芬兰科学院;
关键词
Beamsteering; beam-switching; fifth-generation (5G) antennas; millimeter-waves; planar Yagi-Uda; Rotman lens antenna;
D O I
10.1109/LAWP.2020.3017129
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This letter presents a low-cost single-layer printed circuit board (PCB) design of a Rotman lens and an eight-element Yagi-Uda antenna array suitable for radio frequency (RF) beamsteering at 28 GHz. The antenna array realizes 19 dBi gain due to the guiding parasitic elements of each antenna element and a shaped ground plane surrounding the array. The array radiates in a direction parallel to the PCB enabling the possibility for two-dimensional beamsteering by stacking the PCBs. Integrated with an RF switch network, the design has seven switchable beams to the directions -30 degrees, -20 degrees, -10 degrees, 0 degrees, 10 degrees, 20 degrees, and 30 degrees. The measured realized gain is still as high as 4-10 dBi including losses of the Rotman lens and the RF switches, thanks to the high-gain antenna array design. The array works wideband across 25.5-28.5 GHz where broadside beam gains are better than 8 dBi. This is the first letter in the literature introducing an experimentally verified design of a PCB endfire antenna array at 28 GHz including all necessary components for RF beamsteering, i.e., a Rotman lens and a switch network.
引用
收藏
页码:1754 / 1758
页数:5
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