A Low-Profile Wideband Shared-Aperture Dual-Polarized Antenna Utilizing Dual-Function Slot
SCOPUS
- Title
- A Low-Profile Wideband Shared-Aperture Dual-Polarized Antenna Utilizing Dual-Function Slot
- Authors
- OMAR, AHMED ABDELMOTTALEB ABDEAhmed Abdelmottaleb Omar; Youngno Youn; HONG, WONBIN
- Date Issued
- 2020-03
- Publisher
- INST ENGINEERING TECHNOLOGY-IET
- Abstract
- The design of a low-profile wideband shared-aperture dual-polarized antenna is proposed. The proposed antenna consists of a cavity-backed slot antenna to produce vertical polarization and a slot-backed monopole antenna for horizontal polarization. The slot operates as a radiator for vertical polarization and at the same time, it works as a reflector for horizontal polarization. Two antenna prototypes are designed and simulated. The initial design has a profile of 0.28λ max , where λ max is the free space wavelength at the lowest frequency. The vertical and horizontal polarized antennas exhibit 36.1% and 39.7% bandwidths, respectively. By adding a notch in the slot, the current path increases, which reduces the operating frequency band; hence, the low-profile design is accomplished. The new version features a profile of 0.17λ max with 28.2% and 36% bandwidths for vertical and horizontal polarizations, respectively. The low-profile prototype is fabricated and measured. The measured S-parameters are consistent with the simulated one. The measured realized gain varies from 1 to 4.2 dBi for vertical polarization, while it varies from 1 to 2.5 dBi for horizontal polarization. The total efficiency of the proposed antenna is above 85% within the operating band for both polarizations. The far-field radiation pattern is measured, and a good agreement is achieved with the simulated one.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/102484
- DOI
- 10.1109/OJAP.2020.2977658
- ISSN
- 2637-6431
- Article Type
- Article
- Citation
- IEEE Open Journal of Antennas and Propagation, vol. 1, no. 1, page. 95 - 103, 2020-03
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