Waveguide-Based Phased Array with Integrated Element-Specific Electronics for 28 GHz

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2019-01-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
10
90045-90054
Series
IEEE Access, Volume 7
Abstract
Scalable and beam-steerable phased antenna array prototype for the wireless backhaul communication is presented for the 28 GHz. The 16-element phased array consists of low-loss waveguide power division network, waveguide-to-PCB transitions, phase shifters on PCB, and horn antenna elements fed from the PCB. The paper presents a state-of-the-art design where the electronically controlled phase shifters are implemented on the PCB right in the immediate proximity of the radiating elements. Thus, the transmission losses are kept as low as possible, even though each element has their specific PCB-mounted electronics. The design is scalable so that element-specific parts on the PCB do not consume more area than the antenna element. Furthermore, novel matching steps with easy manufacturing are presented in the power division network. The simulated and measured results show good agreement. The measurement results show that the grating-lobe free beam-steering range is ±20° in both azimuth and elevation. The measured antenna gain at broadside is 11.3 dBi after element phase adjustment, and the majority of the losses are due to the implemented electronics, i.e., the phase shifters.
Description
Keywords
5G, beam steering, phase shifters, phased arrays, power dividers, waveguide transitions
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Citation
Leino , M K , Montoya Moreno , R , Ala-Laurinaho , J , Valkonen , R & Viikari , V 2019 , ' Waveguide-Based Phased Array with Integrated Element-Specific Electronics for 28 GHz ' , IEEE Access , vol. 7 , 8746998 , pp. 90045-90054 . https://doi.org/10.1109/ACCESS.2019.2925458