Aperture-Shared Millimeter-Wave/Sub-6 GHz Dual-Band Antenna Hybridizing Fabry–Pérot Cavity and Fresnel Zone Plate
- 26 July 2021
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 69 (12), 8170-8181
- https://doi.org/10.1109/tap.2021.3098559
Abstract
This paper presents an aperture-shared dual-band large frequency-ratio high gain antenna for Sub-6 GHz and mmwave bands applications. Initially, the partially reflective surface (PRS) of the Fabry-Perot cavity (FPC) antenna operating at the Sub-6 GHz band is realized by using single-layered periodic grid patches while the opaque region of the mm-wave band FZP lens antenna is implemented by using periodic double-screen dipoles. Then, the PRS and the FZP lens are hybridized together and upgraded into a kind of composite metasurface, which simultaneously functions as the PRS of the Sub-6 GHz FPC antenna and the mm-wave band FZP lens with little dual-band mutual interference. Thus, the FPC antenna and the FZP lens can share the same aperture with high aperture reuse efficiency. Because the principles are based on the FPC resonance and the collimating Fresnel zone plate (FZP) lens, high gains are achieved at both bands without a feeding network. Meanwhile, a dual-band large frequency-ratio antenna is designed as the feed. A prototype working at 3 and 28 GHz bands is designed, fabricated, and measured to verify the idea.Funding Information
- National Natural Science Foundation of China (61871189)
- Natural Science Foundation of Guangdong Province (2019A1515011999)
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