Wideband Near-Field Correction of a Fabry–Perot Resonator Antenna

Lalbakhsh, Ali; Afzal, Muhammad U.; Esselle, Karu P.; Smith, Stephanie

doi:10.1109/tap.2019.2891230

Cited by 75 publications

(42 citation statements)

References 31 publications

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“…By combining MATLAB with electromagnetics simulators to solve the design and optimization of complex antennas has been extensive researched and developed. [23][24][25] After unremitting efforts, recently, the cosimulation method unlocked the potential of artificial intelligence in solving complex electromagnetics and microwave problems, which greatly improve the design efficiency and provide more possibility for antenna design. 26,27 In this article, the hat-fed was well designed by HFSS and MATLAB.…”

Section: Optimization By Adopting the Co-simulation Of Hfss-matlabmentioning

confidence: 99%

A new phase efficiency calculation model for optimization of ahat‐fedreflector antenna with arbitrary radius of ring‐shaped phase center

Cai

Yan

et al. 2020

Int J RF Microw Comput Aided Eng

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A hat-fed reflector antenna with large radius of ring-shaped phase center (RSPC) is reported in this article. First, a new phase efficiency calculation model (PECM) based on new phase reference point is presented, which can accurately calculate the phase efficiency of a hat-fed with arbitrary radius of RSPC. Second, based on the invented PECM, the hat-fed can be optimized by using cosimulation method of HFSS and MATLAB, high aperture efficiencies are achieved in the whole band. To prove the validity of the new PECM, a hatfed reflector antenna with large radius of RSPC is designed, manufactured, and measured. The measured results are in good agreement with the simulations. The results show that the developed hat-fed reflector antenna has achieved a VSWR of less than 1.18, the peak realized gain of 43.5 dBi and an aperture efficiency of higher than 67.4% in the entire band from 12.25 to 14.5 GHz.

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Section: Optimization By Adopting the Co-simulation Of Hfss-matlabmentioning

confidence: 99%

A new phase efficiency calculation model for optimization of ahat‐fedreflector antenna with arbitrary radius of ring‐shaped phase center

Cai

Yan

et al. 2020

Int J RF Microw Comput Aided Eng

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“…All dielectric-based PRSs exhibit excellent capabilities in bandwidth expansion and wideband gain enhancement for FP antennas [25]- [40]. In [25]- [27], single-layer dielectric PRSs are employed to realize wide 3-dB gain bandwidths of FP antennas.…”

Section: Introductionmentioning

confidence: 99%

A Low-RCS, High-GBP Fabry–Perot Antenna With Embedded Chessboard Polarization Conversion Metasurface

Liu

Børnemann

et al. 2020

IEEE Access

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A Fabry-Perot (FP) antenna with high gain-bandwidth product (GBP) and wideband radar cross section (RCS) reduction is proposed using an embedded chessboard polarization conversion metasurface (CPCM). A polarization conversion metasurface (PCM) unit and its mirror unit are etched on both sides of a dielectric substrate with chessboard arrangement to form a CPCM. The in-band and out-of-band low-RCS features of the FP antenna are realized by destructive interference, and the high GBP is attributed to the FP resonant cavity. Moreover, an additional small CPCM designed for another PCM unit is embedded into the original CPCM to construct an embedded CPCM, which helps to improve in-band RCS reduction and has a positive effect on gain enhancement and 10-dB impedance bandwidth. The measured results show that the FP antenna with embedded CPCM has a 10-dB return-loss bandwidth of 8.48-12.21 GHz (36.1%), a GBP of 1338, a 3-dB gain bandwidth of 8.9-11.5 GHz (25.5%) and a maximum realized gain of 17.2 dBi. Meanwhile, the measured RCS reduction band covers 8-26 GHz (105.9%) with a peak RCS reduction of 21.2 dB at 9.4 GHz.

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“…Generally, particle swarm optimization (PSO) and genetic algorithm (GA) are most frequently used in optimization. PSO is recently applied in various types of array antennas for broadband, reconfigurable and switched-beam applications [6][7][8][9] and used in conjunction with CST MWS to design near-field correcting structures and spatial phase shifters [10,11]. Also this data-driven optimization is implemented to design various types of EM or microwave devices such as couplers, frequency selective surfaces, artificial magnetic conductors, aperture distribution, and filters [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Wide-Band and Wide Angle Cavity-Backed Microstrip Patch Array Using Genetic Algorithm

Kim¹,

Han²,

Kim³

et al. 2020

PIER M

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This paper specifies optimization of a low active reflection coefficient (ARC) array element with a cavity-backed microstrip patch (CBMP) using a genetic algorithm (GA) at wide-band and 2-dimensional (2D) wide angle. Both the GA implemented with a user-defined MATLAB code and a 3-dimensional (3D) full-wave electromagnetic simulator CST MWS are simulated with a real-time direct link. An optimization method using not a traditional unit cell or a small array but a 15 × 15 finite array structure is proposed to apply to a large-scale array antenna. The CBMP array antenna to meet a design goal of a max ARC is optimally designed at equally divided 9 frequencies and 11374 beam angles for S-band 400 MHz operating frequency bandwidth and beam scan coverage (Az = −60 • ∼ +60 • , El = −3 • ∼ +90 •). Measurement results show that a prototype and a full-scale array antenna have low ARC below −8.1 dB and −6.9 dB, respectively for required wide frequency bandwidth and beam scan coverage. It is confirmed that the proposed method is a good solution for optimizing a large-scale array antenna.

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Wideband Near-Field Correction of a Fabry–Perot Resonator Antenna

Cited by 75 publications

References 31 publications

A new phase efficiency calculation model for optimization of ahat‐fedreflector antenna with arbitrary radius of ring‐shaped phase center

A new phase efficiency calculation model for optimization of ahat‐fedreflector antenna with arbitrary radius of ring‐shaped phase center

A Low-RCS, High-GBP Fabry–Perot Antenna With Embedded Chessboard Polarization Conversion Metasurface

Optimization of Wide-Band and Wide Angle Cavity-Backed Microstrip Patch Array Using Genetic Algorithm

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