TY - JOUR
T1 - Fabry-Pérot Resonator Antenna in Equivalent-Medium Metamaterials
AU - Yuan, Wei
AU - Chen, Jianfeng
AU - Tang, Wen Xuan
AU - Wang, Lei
AU - Cui, Tie Jun
AU - Cheng, Qiang
N1 - Funding Information:
This work was supported in part by the National Key Research and Development Program of China under Grant 2018YFA0701904, Grant 2017YFA0700201, Grant 2017YFA0700202, and Grant 2017YFA0700203; in part by the National Natural Science Foundation of China under Grant 61631007, Grant 61571117, Grant 61138001, Grant 61371035, Grant 61722106, Grant 61731010, and Grant 11227904; and in part by the 111 Project under Grant 111-2-05.
Publisher Copyright:
© 1963-2012 IEEE.
PY - 2021/11
Y1 - 2021/11
N2 - In this communication, a wideband Fabry-Pérot resonator antenna (FPRA) is proposed. An optimized partially reflective surface (PRS) with a transverse permittivity gradient (TPG) composed of four nonrotationally symmetric sections is employed in the design of the antenna. The use of nonrotationally symmetric PRS results in more than 31% improvement of the 3 dB gain bandwidth compared with the traditional rotationally symmetric PRS. Furthermore, two types of nonresonant metamaterials (metallic-ring and etching-hole unit cells) are used to implement the equivalent permittivity of PRS. In this way, the equivalent permittivity value covers a broad range (3.5-9.5) for the same dielectric. As a result, the restrictions imposed by the use of only commercially available dielectrics and the errors that occur during the fabrication and assembly progress of different materials can be avoided. The primary radiator of FPRA is a double-ridge waveguide horn, which ensures wideband antenna operation. An FPRA prototype is fabricated and measured, which exhibits a broad bandwidth (5.2-11.5 GHz) with the return loss |S11| of less than -10 dB. The measured 3 dB gain bandwidth is 73.8% (in the frequency range of 5.3-11.5 GHz) with a peak gain of 17.1 dBi at 7.8 GHz.
AB - In this communication, a wideband Fabry-Pérot resonator antenna (FPRA) is proposed. An optimized partially reflective surface (PRS) with a transverse permittivity gradient (TPG) composed of four nonrotationally symmetric sections is employed in the design of the antenna. The use of nonrotationally symmetric PRS results in more than 31% improvement of the 3 dB gain bandwidth compared with the traditional rotationally symmetric PRS. Furthermore, two types of nonresonant metamaterials (metallic-ring and etching-hole unit cells) are used to implement the equivalent permittivity of PRS. In this way, the equivalent permittivity value covers a broad range (3.5-9.5) for the same dielectric. As a result, the restrictions imposed by the use of only commercially available dielectrics and the errors that occur during the fabrication and assembly progress of different materials can be avoided. The primary radiator of FPRA is a double-ridge waveguide horn, which ensures wideband antenna operation. An FPRA prototype is fabricated and measured, which exhibits a broad bandwidth (5.2-11.5 GHz) with the return loss |S11| of less than -10 dB. The measured 3 dB gain bandwidth is 73.8% (in the frequency range of 5.3-11.5 GHz) with a peak gain of 17.1 dBi at 7.8 GHz.
KW - 3 dB gain bandwidth
KW - Fabry-Pérot resonator antenna (FPRA)
KW - PRS
KW - broadband
KW - metamaterials (MTMs)
UR - http://www.scopus.com/inward/record.url?scp=85105884706&partnerID=8YFLogxK
U2 - 10.1109/TAP.2021.3076666
DO - 10.1109/TAP.2021.3076666
M3 - Article
SN - 0018-926X
VL - 69
SP - 7906
EP - 7911
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 11
ER -