Design and Optimization of a Single-Layer Planar Transmit-Receive Contoured Beam Reflectarray With Enhanced Performance

Zhou, Min; Borries, Oscar; Jørgensen, Erik

doi:10.1109/tap.2014.2365039

Cited by 37 publications

(45 citation statements)

References 15 publications

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“…It turns out that the old algorithm was actually progressing beyond −0.63, although very slowly, and attains the same minimum as the new algorithm at −0.76, slightly better than the optimized shaped reflector in [4]. The results are detailed in Table II, demonstrating that the reduction in optimization time is a factor of 113.…”

Section: Reflectarraymentioning

confidence: 87%

“…In [3], a parabolic reflectarray with rectangular elements was optimized to fulfill the coverage requirements with a margin of 0.63 dB, close to the performance of a shaped reflector which yields a 0.7 dB margin as reported in [4]. Interestingly, the optimization performed in [3] took more than 12 hours, after which the old algorithm appeared to have stalled at 0.63 dB.…”

Section: Reflectarraymentioning

confidence: 99%

See 1 more Smart Citation

Large-scale optimization of contoured beam reflectors and reflectarrays

Borries¹,

Sørensen²,

Jørgensen³

et al. 2016

2016 IEEE International Symposium on Antennas and Propagation (APSURSI)

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Abstract-Designing a contoured beam reflector or performing a direct optimization of a reflectarray requires a mathematical optimization procedure to determine the optimum design of the antenna. A popular approach, used in the market-leading TICRA software POS, can result in computation times on the order of days, due to the optimization algorithm. The present paper discusses recent improvements, allowing reductions in optimization time by two orders of magnitude or more on several application examples.

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Section: Reflectarraymentioning

confidence: 87%

Section: Reflectarraymentioning

confidence: 99%

Large-scale optimization of contoured beam reflectors and reflectarrays

Borries¹,

Sørensen²,

Jørgensen³

et al. 2016

2016 IEEE International Symposium on Antennas and Propagation (APSURSI)

Self Cite

View full text Add to dashboard Cite

show abstract

“…[32], [33] 또는 Direct optimization [34]～ [36] 등의 기법을 이용해 이루어지며, 그림 18, 19는 각각 Direct optimization을 통해 구현된 리플렉트어 레이 및 빔 패턴을 나타낸다.…”

Section: 플렉트어레이를 보여준다 그림unclassified

“…리플렉트어레이를 두 개의 초점 이 존재하는 타원 형태의 반사위상 분포를 갖도록 설계 하면, 이와 같이 근거리에서 빔을 집중시킬 수 있다. 그림 ting using beam shaped microstrip reflectarray [34] .…”

Section: -2 Rfid 리더기용 안테나unclassified

Researches on Microstrip Reflectarray Antennas

Yoon¹

2015

The Journal of Korean Institute of Electromagnetic Engineering

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Microstrip reflectarray is an antenna which controls its radiation pattern with a number of reflective elements. Conventionally, the reflectarray has been researched to replace curved reflector antennas. In this paper, design theories of reflectarray is briefly introduced, and research trends of high gain and broadband reflectarrays are reviewed. To improve the gain of the reflectarrays, it is required that the reflection phase errors on the reflectarray surface be minimized. For this purpose, sufficiently wide reflection phase range and low phase sensitivity should be realized with the designed element. For bandwidth improvement, the reflection phase of the element should be linear with the frequency variation. In this paper, various researches to improve the reflection phase characteristics of the element for high gain and broadband reflectarrays, such as multi-layer and single-layer multi-resonant structures, are reviewed. Also, dual-reflectarray configuration for compact antenna design is reviewed. Finally, various applications of reflectarrays such as contoured beam, near-field focusing, and RCS reduction are reviewed.

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“…However, only single-polarized reflectarrays are considered with very few elements (225 in total) since the algorithm was slow. Finally, in [21]- [23] a general optimization technique for printed reflectarrays is presented and used, which employs a gradient minimax algorithm for the direct optimization of the reflectarray geometry. It allows to synthesize both copolar and crosspolar components using several degrees of freedom.…”

Section: Introductionmentioning

confidence: 99%

Efficient Crosspolar Optimization of Shaped-Beam Dual-Polarized Reflectarrays Using Full- Wave Analysis for the Antenna Element Characterization

Prado

Arrebola

Pino

et al. 2017

IEEE Trans. Antennas Propagat.

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A method for the optimization of the crosspolar component of dual-polarized reflectarrays using full-wave analysis at the element level is described and demonstrated. The reflectarray full-wave analysis is based on local periodicity and integrated within the optimization process in order to accurately characterize the crosspolar far field. The proposed method is based on the generalized Intersection Approach framework using the Levenberg-Marquardt Algorithm as backward projector, and the employed full-wave analysis is based on the Method of Moments assuming local periodicity (MoM-LP). Several strategies to accelerate the computations are exploited, such as the parallelization of all the algorithm building blocks. To minimize the impact of MoM-LP in the optimization process, a strategy to reduce the number of MoM-LP calls is described, further accelerating the algorithm. Moreover, the convergence is improved by working with the squared field amplitude, alleviating the trap problem of local optimizers. This method allows to optimize the crosspolar component in the whole visible region or only in the coverage zone to facilitate the convergence, reduce computing time and memory usage. Two test cases are provided to validate the technique, one with an isoflux pattern for global Earth coverage and another with European coverage for DBS application.

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Design and Optimization of a Single-Layer Planar Transmit-Receive Contoured Beam Reflectarray With Enhanced Performance

Cited by 37 publications

References 15 publications

Large-scale optimization of contoured beam reflectors and reflectarrays

Large-scale optimization of contoured beam reflectors and reflectarrays

Researches on Microstrip Reflectarray Antennas

Efficient Crosspolar Optimization of Shaped-Beam Dual-Polarized Reflectarrays Using Full- Wave Analysis for the Antenna Element Characterization

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