High Gain Wideband Circularly Polarized Microstrip Antenna Array
- Resource Type
- Periodical
- Authors
- Verma, A.; Arrawatia, M.; Kumar, G.
- Source
- IEEE Transactions on Antennas and Propagation IEEE Trans. Antennas Propagat. Antennas and Propagation, IEEE Transactions on. 70(11):11183-11187 Nov, 2022
- Subject
- Fields, Waves and Electromagnetics
Aerospace
Transportation
Components, Circuits, Devices and Systems
Bandwidth
Antenna arrays
Feeds
Gain
Phased arrays
Microstrip antenna arrays
Wideband
Antenna array
circularly polarized (CP)
high gain
sequential rotation (SR)
sub-6 GHz
wideband
- Language
- ISSN
- 0018-926X
1558-2221
A wideband high gain circularly polarized microstrip antenna (CP MSA) array is presented in this communication. In the proposed CP MSA array, the elements are designed at 3.5 and 5.8 GHz, which are sequentially rotated to form a planar array. The array elements are fed using the $TM_{110}$ and $TM_{210}$ modes of a center CP MSA. This arrangement achieves an axial ratio (AR) bandwidth of 63.7% (3.25–6.29 GHz) and improves gain over a wide bandwidth. The peak gain of the array is 17.77 dBic with a 3-dB gain bandwidth of 53.9%. The center MSA of the array is fed using four orthogonal printed L-probes with quadrature phase difference. The proposed CP MSA array has an $|S_{11}|\leq -10$ dB bandwidth of 63.3% (3.32–6.4 GHz).