Beam Steering Limitations for Sequentially Rotated Circularly Polarized Phased Antenna Arrays

Authors :: Youssef Tawk
Joseph Costantine
A. Jabri
Source :: 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting.
Publication Year :: 2020
Publisher :: IEEE, 2020.
Abstract: In this paper, the effect of sequential rotation on the beam steering capabilities of a circularly polarized phased antenna array is analyzed. Two different topologies for a phased antenna array operating at Ka-band between 28 GHz and 40 GHz are studied where each structure is tailored to produce a maximum gain of almost 19 dB with an axial ratio below 0.5 dB. The individual elements of both topologies are dual fed with a differential phase shift of 90° respectively. This paper proves that the steering capability of a phased antenna array is doubled when sequential rotation is omitted from its feeding network.

Subjects :: Physics
Antenna array
Optics
business.industry
Axial ratio
Beam steering
Topology (electrical circuits)
Antenna (radio)
Rotation
business
Network topology
Differential phase

Database :: OpenAIRE
Journal :: 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting
Accession number :: edsair.doi...........2e62c9edca569a8569480b5e896a1fc3
Full Text :: https://doi.org/10.1109/ieeeconf35879.2020.9329466

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