Broad-band fragmented aperture phased array element design using genetic algorithms

Thors, B.; Steyskal, H.; Holter, H.

doi:10.1109/tap.2005.856340

Cited by 60 publications

(33 citation statements)

References 11 publications

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“…Genetic algorithms have been used in electromagnetic optimization with remarkable results, see [13,21,23] for a description of the method and its applications. It is known that genetic algorithms feature an acceptably fast convergence to suboptimal solutions and avoid local extrema [21].…”

Section: Rectangular Regionsmentioning

confidence: 99%

“…The genetic algorithm used here is based on Holter's implementation distributed with the PB-FDTD package [23]. We use a 200 individual population.…”

Section: Simulation Setupmentioning

confidence: 99%

“…A genetic algorithm (GA) with MoM simulation is implemented following the GA/MoM approach described in [16,21,23]. Using rectangular mesh elements, a mother impedance matrix is computed prior to launching the actual optimization.…”

Section: Introductionmentioning

confidence: 99%

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Antenna Bandwidth Optimization With Single Frequency Simulation

Cismasu

Gustafsson

2014

IEEE Trans. Antennas Propagat.

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A method to compute antenna Q using an electromagnetic simulation at a single frequency is described. This method can easily be integrated into global optimization algorithms. In this way the optimization time of some antenna parameters, e.g., bandwidth, may be signicantly reduced. The method is validated by direct comparison with the physical bound of the analyzed structure. Numerical examples for rectangular antennas and antennas with a rectangular ground plane illustrate the integration of the method into a genetic algorithm. The results predicted by optimization agree very well with those obtained using a commercial electromagnetic solver. These results suggest that the method can be used to yield antennas with Q factors within 20 % of their corresponding physical bound.

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Section: Rectangular Regionsmentioning

confidence: 99%

“…The genetic algorithm used here is based on Holter's implementation distributed with the PB-FDTD package [23]. We use a 200 individual population.…”

Section: Simulation Setupmentioning

confidence: 99%

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Antenna Bandwidth Optimization With Single Frequency Simulation

Cismasu

Gustafsson

2014

IEEE Trans. Antennas Propagat.

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“…Fragmented geometry has been proposed for antenna design for years [8][9][10][11][12]. It is generally noted that fragment-type antennas may provide great convenience for impedance matching and broadband operation [13,14].…”

Section: Introductionmentioning

confidence: 99%

Design of Tiny Versatile Uhf Rfid Tags of Fragment-Type Structure

Yang¹,

Wang²,

Ding³

2014

PIER M

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Abstract-Small ultra high frequency (UHF) radio frequency identification (RFID) tags of fragmenttype structure can be designed for broadband operation and for versatile impedance matching to different chips. The fragment-type tag structure can be optimized by using genetic algorithm. In our design, multi-objective evolutionary algorithm based on decomposition combined with enhanced genetic operators (MOEA/D-GO) is used for optimization searching. The multiple objectives are defined in terms of power transmission coefficients for operation in multiple RFID bands and for impedance matching to several prevailing RFID chips. For demonstration, a fragmented tiny square UHF tag of dimensions of 5.5 mm * 5.5 mm is designed for multi-band operation over the 433 MHz, 869 MHz and 915 MHz RFID bands, and a fragmented round tiny RFID tag of radius of 4.5 mm is also designed for versatile connection to five prevailing RFID chips at 915 MHz. The tiny round versatile tag is tested by connecting two chips, the IMPIMJ Monza-4 chip (11 − 143j) and ALIEN Higgs-3 chip (27 − 195j), respectively. Effects of input impedance and adjunct fragments on versatility of the design are further discussed.

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“…최근 위상 배열 안테나 의 복사 패턴 합성 및 임피던스 특성을 최적화하기 위해 유전 알고리즘을 일부 적용하였고 [5], [6] [7] . 일반적으로 테이펏 슬롯은 지수(exponential) 혹은 1차 선형 함수의 형태로 구성되지만, 본 논문에서는 전체 안테나 구조의 깊이를 고려하 …”

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Optimized Design of Wide-Band Subarray Using a Genetic Algorithm

Kim¹,

Lee²,

Kim³

2012

The Journal of Korean Institute of Electromagnetic Engineering

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This paper specifies on optimized design of wide-band subarray using a Genetic Algorithm. First wide-band radiator was designed at triangle lattice of infinite array structure. It is the radiator of notch type that has a wide-band characteristic of ratio 2:1 between maximum and minimum frequency satisfying active reflection coefficient under -10 dB at boresight. And a Genetic Algorithm was applied to optimize subarray partition of antenna consisting of 1,100 array elements. It was confirmed that an optimized subarray antenna has a 4.5～5.5 dB more improved maximum SLL (Side-Lobe Level) than regular subarray antenna.

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Broad-band fragmented aperture phased array element design using genetic algorithms

Cited by 60 publications

References 11 publications

Antenna Bandwidth Optimization With Single Frequency Simulation

Antenna Bandwidth Optimization With Single Frequency Simulation

Design of Tiny Versatile Uhf Rfid Tags of Fragment-Type Structure

Optimized Design of Wide-Band Subarray Using a Genetic Algorithm

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