Genetic algorithm optimization of a planar slot array using full wave method-of-moments analysis

Rengarajan, S.R.

doi:10.1002/mmce.20730

Cited by 9 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Improved performance of traveling-wave slot arrays have been reported [4], [6]. The method involves a procedure where the array is repeatedly analyzed and slot dimensions are adjusted until the performance goal is reached.…”

Section: B Compensation For Effects Of the Element Patternmentioning

confidence: 99%

“…Other researchers have reported improved performance of traveling-wave slot arrays. One approach involves the application of a full-wave finite element or method of moment analysis to an existing design and performing optimisation by perturbing the slot dimensions to improve the array performance [4]- [6]. This optimization process involves repeated application of a full-wave analysis of the array, which can be cumbersome and very time consuming.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Refinements to the Design of Traveling-Wave Waveguide Slot Arrays

Coetzee

2024

IEEE Open J. Antennas Propag.

View full text Add to dashboard Cite

A traveling-wave array of longitudinal slots in the broad wall of a waveguide offers greater impedance bandwidth compared to standing-wave slot arrays. Narrow-beam applications typically require a main beam at a chosen off-broadside direction and low sidelobes in other directions. Since a portion of the input power is dissipated in a load, wideband performance is achieved at the expense of reduced radiation efficiency. Without compensation for the effects of the array element radiation pattern, conventional array synthesis approaches produce sidelobe levels that do not meet the original specification. Existing remedial design techniques use optimization to address either sidelobe performance, impedance bandwidth or efficiency. This paper presents a new design approach that not only ensures that sidelobes specifications are met, but also achieves good impedance matching and high efficiency. The procedure is demonstrated using a 21-element array in standard X-band waveguide and performance is validated though both simulation and measurement.

show abstract

Section: B Compensation For Effects Of the Element Patternmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Refinements to the Design of Traveling-Wave Waveguide Slot Arrays

Coetzee

2024

IEEE Open J. Antennas Propag.

View full text Add to dashboard Cite

show abstract

“…GA is an heuristic stochastic global optimization algorithm based on the principle of survival of the best [9]. Since GA has the property of converging to the best result, it is highly preferred in antenna design problems [10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of Directive Circular Patch Antenna with Asymmetric Pixels Using Genetic Algorithm

Doğusan

2021

Balkan Journal of Electrical and Computer Engineering

View full text Add to dashboard Cite

In this study, a low-profile, high directive circular microstrip antenna was designed for 5.8 GHz ISM band applications. In the design, the GA / MoM approach based on the Method of Moments (MoM) integrated with the Genetic Algorithm (GA) optimization method was used. The simulations of the best first and second antennas obtained as a result of the optimization process were made using the ANSYS HFSS software program. According to the simulation results, it was determined that the input reflection coefficient of both antennas was below -10 dB in the ISM band where the antenna was operating and had maximum directivity. It was observed that the radiation characteristics of both antennas obtained with the GA / MoM approach were steady-state in the operating band. It was concluded that asymmetric pixelation used in this method can be used in the design of antennas with different geometries.

show abstract

“…Waveguide slot antenna arrays [3] or microstrip antenna arrays [4,5] are commonly used in traditional monopulse tracking systems. Waveguide slot antenna arrays possess several unique advantages, such as low loss, low coupling effect, low cross-polarization, high radiation efficiency, high polarization purity, high frequency operation, and high power handling capability, but they are of narrow bandwidth and high cost and not suitable for mass production [6][7][8][9]. Microstrip antenna arrays have been widely used in monopulse system, showing benefits including high integration capability, low cost, and ease of mass production [4,5].…”

Section: Introductionmentioning

confidence: 99%

Ka-Band Slot-Microstrip-Covered and Waveguide-Cavity-Backed Monopulse Antenna Array

Liu

Huang

et al. 2014

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

A slot-microstrip-covered and waveguide-cavity-backed monopulse antenna array is proposed for high-resolution tracking applications at Ka-band. The monopulse antenna array is designed with a microstrip with2×32slots, a waveguide cavity, and a waveguide monopulse comparator, to make the structure simple, reduce the feeding network loss, and increase the frequency bandwidth. The2×32slot-microstrip elements are formed by a metal clad dielectric substrate and slots etched in the metal using the standard printed circuit board (PCB) process with dimensions of 230 mm × 10 mm. The proposed monopulse antenna array not only maintains the advantages of the traditional waveguide slot antenna array, but also has the characteristics of wide bandwidth, high consistence, easy of fabrication, and low cost. From the measured results, it exhibits good monopulse characteristics, including the following: the maximum gains of sum pattern are greater than 24 dB, the 3 dB beamwidth of sum pattern is about 2.2 degrees, the sidelobe levels of the sum pattern are less than −18 dB, and the null depths of the difference pattern are less than −25 dB within the operating bandwidth between 33.65 GHz and 34.35 GHz for VSWR ≤ 2.

show abstract

Genetic algorithm optimization of a planar slot array using full wave method-of-moments analysis

Cited by 9 publications

References 10 publications

Refinements to the Design of Traveling-Wave Waveguide Slot Arrays

Refinements to the Design of Traveling-Wave Waveguide Slot Arrays

Design and Optimization of Directive Circular Patch Antenna with Asymmetric Pixels Using Genetic Algorithm

Ka-Band Slot-Microstrip-Covered and Waveguide-Cavity-Backed Monopulse Antenna Array

Contact Info

Product

Resources

About