A circularly polarized Fabry‐Perot resonant cavity antenna using frequency selective surface ‐based partial reflecting surface

2021 ◽  
Author(s):  
Chunfeng Yang ◽  
Xiao‐Wei Zhu ◽  
Pengfei Liu
Keyword(s):  
Resonant Cavity ◽  
Frequency Selective Surface ◽  
Circularly Polarized ◽  
Fabry Perot ◽  
Frequency Selective ◽  
Reflecting Surface

scholarly journals A Wideband Circularly Polarized Slot Antenna Backed by a Frequency Selective Surface

2019 ◽  
Vol 19 (3) ◽  
pp. 166-171 ◽  
Author(s):  
Puneeth Kumar Tharehalli Rajanna ◽  
Karthik Rudramuni ◽  
Krishnamoorthy Kandasamy
Keyword(s):  
Frequency Selective Surface ◽  
Slot Antenna ◽  
Circularly Polarized ◽  
Frequency Selective

scholarly journals Study of Antenna Superstrates Using Metamaterials for Directivity Enhancement Based on Fabry-Perot Resonant Cavity

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Haixia Liu ◽  
Shuo Lei ◽  
Xiaowei Shi ◽  
Long Li
Keyword(s):  
Reflection Coefficient ◽  
Resonant Cavity ◽  
Frequency Selective Surface ◽  
Lens Model ◽  
Optimum Location ◽  
Electromagnetic Bandgap ◽  
Left Handed ◽  
Antenna Directivity ◽  
Fabry Perot ◽  
Refractive Lens

Metamaterial superstrate is a significant method to obtain high directivity of one or a few antennas. In this paper, the characteristics of directivity enhancement using different metamaterial structures as antenna superstrates, such as electromagnetic bandgap (EBG) structures, frequency selective surface (FSS), and left-handed material (LHM), are unifiedly studied by applying the theory of Fabry-Perot (F-P) resonant cavity. Focusing on the analysis of reflection phase and magnitude of superstrates in presently proposed designs, the essential reason for high-directivity antenna with different superstrates can be revealed in terms of the F-P resonant theory. Furthermore, a new design of the optimum reflection coefficient of superstrates for the maximum antenna directivity is proposed and validated. The optimum location of the LHM superstrate which is based on a refractive lens model can be determined by the F-P resonant distance.

scholarly journals Tilted Beam Fabry–Perot Antenna with Enhanced Gain and Broadband Low Backscattering

Electronics ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 267
Author(s):  
Hassan Umair ◽  
Tarik Bin Abdul Latef ◽  
Yoshihide Yamada ◽  
Wan Nor Liza Binti Wan Mahadi ◽  
Mohamadariff Othman ◽  
...  
Keyword(s):  
Ground Plane ◽  
Frequency Selective Surface ◽  
Bottom Surface ◽  
Phase Gradient ◽  
Periodic Surface ◽  
Radar Signature ◽  
Incident Plane ◽  
Fabry Perot ◽  
Reflecting Surface ◽  
Peak Gain

Communication with low radar signature platforms requires antennas with low backscatter, to uphold the low observability attribute of the platforms. In this work, we present the design for a Fabry–Perot (F-P) cavity antenna with low monostatic radar cross section (RCS) and enhanced gain. In addition, peak radiation is tilted inthe elevation plane. This is achieved by incorporating phase gradient metasurface (PGM) with absorptive frequency selective surface (FSS). The periodic surface of metallic square loops with lumped resistors forms the absorptive surface, placed on top of a partially reflecting surface (PRS) with an intervening air gap. The double-sided PRS consists of uniform metallic patches etched in a periodic fashion on its upper side. The bottom surface consists of variable-sized metallic patches, to realize phase gradient. The superstrate assembly is placed at about half free space wavelength above the patch antenna resonating at 6.6 GHz. The antenna’s ground plane and PRS together construct the F-P cavity. A peak gain of 11.5 dBi is achieved at 13° tilt of the elevation plane. Wideband RCS reduction is achieved, spanning 5.6–16 GHz, for x- and y-polarizations of normally incident plane wave. The average RCS reduction is 13 dB. Simulation results with experimental verifications are presented.

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