A Compact Gradient Refractive Index Metamaterial Lens for End-Fire Fan-Beam Radiation
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Pages (from-to) | 2339-2343 |
Number of pages | 5 |
Journal / Publication | IEEE Antennas and Wireless Propagation Letters |
Volume | 20 |
Issue number | 12 |
Online published | 8 Sept 2021 |
Publication status | Published - Dec 2021 |
Link(s)
Abstract
This letter presents an end-fire fan-beam radiation antenna by utilizing a gradient refractive index metamaterial lens. The lens includes one core and two impedance matching layers which are both based on the proposed metamaterial unit cells with a large refractive index variation range. An incident wave is excited from the antenna source and propagates to the lateral side of the lens. Two parallel plates set for the TE1 mode condition are utilized such that E-plane radiating beam can be controlled. To validate our proposed design, a prototype working at 10 GHz is fabricated and measured. Measured results are in good agreement with the simulation. The height and thickness of the metamaterial lens are about 0.44 λ0 and 0.36 λ0, where λ0 is the wavelength of the center frequency in free space. The measured E- and H- planes 3 dB beamwidths are 25º and 82º at the center frequency, respectively. The measured peak gain of the antenna is about 11.1 dBi, which implies a 5.4 dB gain enhancement compared with initial radiation source. Furthermore, this lens offers a high aperture efficiency of 72.4%.
Research Area(s)
- Antenna measurements, Antennas, Endfire antenna, fan-beam, gradient refractive index, lens antenna, Lenses, Metals, metamaterial, Metamaterials, metasurface, parallel plate, Refractive index, Substrates
Citation Format(s)
A Compact Gradient Refractive Index Metamaterial Lens for End-Fire Fan-Beam Radiation. / Ren, Xue; Lin, Quanwei; Wong, Hang et al.
In: IEEE Antennas and Wireless Propagation Letters, Vol. 20, No. 12, 12.2021, p. 2339-2343.
In: IEEE Antennas and Wireless Propagation Letters, Vol. 20, No. 12, 12.2021, p. 2339-2343.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review