Frequency-Selective Beamforming Array Antenna Systems with Frequency-Dependent Phase Shifters
- Authors
- Kim, Jung Ouk; Yoon, Won-Sang; Han, Sang-Min
- Issue Date
- Oct-2019
- Publisher
- KOREAN INST ELECTROMAGNETIC ENGINEERING & SCIENCE
- Keywords
- Beamforming Antennas; Beam Steering; Phase Control; Phase Shifters; RF/Analog Processing
- Citation
- Journal of Electromagnetic Engineering and Science, v.19, no.4, pp 259 - 265
- Pages
- 7
- Journal Title
- Journal of Electromagnetic Engineering and Science
- Volume
- 19
- Number
- 4
- Start Page
- 259
- End Page
- 265
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/4163
- DOI
- 10.26866/jees.2019.19.4.259
- ISSN
- 2671-7255
- Abstract
- A frequency-selective beamforming array antenna system is proposed for next-generation mobile applications. Whereas a conventional phased array steers antenna beams in the same direction, the proposed system involves a channel-selective beam for each frequency channel using RF/analog processing. A frequency-dependent phase shifter is designed with controllable phase slopes using reconfigurable transmission line configuration. Wideband frequency-dependent phase bits of 0 degrees, +/- 90 degrees, +/- 120 degrees, +/- 180 degrees, +/- 240 degrees, and +/- 270 degrees phase differences are achieved for a frequency band from 3.4 GHz to 3.7 GHz. A wideband planar antenna element with a dual-finger monopole and an 8-way wideband matched feedline are applied to the proposed system. From the experimental results, the frequency-selective beamforming array presents simultaneous channel-selective beams with steering angles of up to about +/- 40 degrees. The adjustable beamforming system can achieve inter-beam hand-off for 5G mobile applications.
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Collections - College of Engineering > Department of Information and Communication Engineering > 1. Journal Articles
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