Beam Optimization for 28 GHz Phased Array Utilizing Measurement Data

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
Conference article in proceedings
Date
2020-03
Major/Subject
Mcode
Degree programme
Language
en
Pages
Series
14th European Conference on Antennas and Propagation, EuCAP 2020, Proceedings of the European Conference on Antennas and Propagation
Abstract
This paper presents beam optimization methods for a phased array operating at 28GHz. The phase of each antenna element is controlled with an element-specific 5-bit phase shifter. The amplitude of each element varies with the chosen phase shift state due to the antenna design. Each individual element is measured and based on the measurement data, the beam optimization for the maximum gain is done. The optimization increases the measured gain compared to the nominal case by 1.3dB at broadside. Furthermore, the element amplitude variation allows optimization for the lower side lobes to be done by finding the correctly weighted amplitudes. Taylor distribution is used for this optimization and the side-lobe level decreases 2.4dB for the broadside beam.
Description
Keywords
Beam steering, Phase shifters, phased arrays
Other note
Citation
Leino , M K , Bergman , J , Ala-Laurinaho , J & Viikari , V 2020 , Beam Optimization for 28 GHz Phased Array Utilizing Measurement Data . in 14th European Conference on Antennas and Propagation, EuCAP 2020 . , 9135596 , Proceedings of the European Conference on Antennas and Propagation , IEEE , European Conference on Antennas and Propagation , Copenhagen , Denmark , 15/03/2020 . https://doi.org/10.23919/EuCAP48036.2020.9135596