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- Title
Flat-topped Beams using Phase Compensation based on Low-profile Transmitarray.
- Authors
Hui Zhang; Tianhang Lan; Shan Zhao; Qingqi He; Zengrui Li
- Abstract
This paper proposes a method to add an additional phase compensation to conventional phased arrays to achieve flat-topped beam forming, which can convert the spherical waves emitted by common conical horn antennas into cylindrical flat-topped beams, at the same time, there is also a certain power enhancement. A centrosymmetric unit composed of four layers of F4B and metal patches is designed. By changing the value of the parameters, a 360? phase change can be achieved, and it has the advantages of small size and low-profile. To validate the design concept, a prototype of the transmitarray (TA) was designed, fabricated, and measured by calculating the phase distribution of the front. The measurement results show that the designed TA can achieve flat-topped beams at 5.2GHz, the maximum gain is 1.15dB higher than that of the horn antenna, and the flat-topped range is about ±10?. The results are in good agreement with the simulation within the test range.
- Subjects
HORN antennas; SPHERICAL waves; PHASED array antennas
- Publication
Applied Computational Electromagnetics Society Journal, 2023, Vol 38, Issue 6, p409
- ISSN
1054-4887
- Publication type
Article
- DOI
10.13052/2023.ACES.J.380605