Journal ArticleDOI
Minimizing cosecant-squared pattern side lobe level of linear array antenna by genetic algorithm and optimizing feed network
TLDR
In this article , a 12-element linear array of microstrip patch antenna with cosecant-squared pattern for radar applications at the frequency 9.6 GHz was designed and synthesized.Abstract:
This paper designs and synthesizes a 12-element linear array of microstrip patch antenna with cosecant-squared pattern for radar applications at the frequency 9.6 GHz. The antenna array consists of three microstrip sublayers including two lower sublayers designed for feed network, and radiating patches located on the upper sublayer which are excited through a slot in the ground plate. One of the most important advantages of this antenna array is the cross-polarization discrimination of less than −50 dB which is the result of removing undesirable and unwanted radiations caused by feed network. The Genetic Algorithm (GA) optimization method has been used to synthesize cosecant-squared pattern with considering the mutual coupling effect of array elements. In this method, the amplitude and phase of each element in the far field has been calculated by taking into account the mutual coupling effect, and applied in the optimization process. Finally, the feed network has been designed according to the amplitudes and phases obtained from the GA. The simulation results confirm the validity of all design and synthesis stages. read more
Citations
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Journal ArticleDOI
Efficient integrated 5 × 2 rectenna array for low RF energy recovery
Milad Nosrati,Pejman Rezaei +1 more
TL;DR: In this article , a series-parallel combination of connected rectenna arrays using SMS7621-001LF Skyworks Schottky diodes at 5.8 GHz to harvest wireless systems' power is presented.
Journal ArticleDOI
DOA estimation accuracy improvement by solving the rank reduction algorithm ambiguous parameters through synthesizing the volume antenna beam pattern
TL;DR: In this paper , the authors synthesize the Conformal Uniform Circular Array (CUCA) and uses the Rank Reduction (RARE) algorithm to minimize the mutual coupling and shadowing impacts on the array performance.
Journal ArticleDOI
Modeling and numerical analysis of volume array radiation pattern impact on 2D‐DOA estimation accuracy considering arrays' aperture angle
Mehdi Sharifi,Pejman Rezaei +1 more
TL;DR: In this paper , a volume array structure with 13 radiative elements and the two side angles of 30 and 45 degrees has been used to investigate 2D-DOA estimation accuracy in all angles especially in angles close to the horizon.
Proceedings ArticleDOI
Optimizing microstrip antennas and antenna arrays using evolutionary algorithms
TL;DR: In this article , a genetic algorithm is used to find the optimum among differently oriented CPS antenna pattern requirements such as antenna beam control of physical radar emissions and receives in complex environmental conditions or interference mitigation.
Proceedings ArticleDOI
Planar Array Radiation Pattern Synthesis Using Relative Elements Axial Rotation
TL;DR: In this paper , a planar antenna array using relative elements axial rotation is proposed to generate broadside flattop or cosecant beams for surveillance, radars, and mobile communications.
References
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Journal ArticleDOI
Genetic algorithms in the design and optimization of antenna array patterns
TL;DR: This paper demonstrates the application of genetic algorithms (GAs) in array pattern synthesis by presenting three examples: two for linear arrays and one involving linear and planar arrays.
Journal ArticleDOI
Synthesis of uniform amplitude unequally spaced antenna arrays using the differential evolution algorithm
TL;DR: In this article, a computationally efficient global optimization method, the differential evolution algorithm (DEA), is proposed for the synthesis of uniform amplitude arrays of two classes, i.e., unequally spaced arrays with equal phases and unequal phases.
Journal ArticleDOI
Synthesis of thinned linear antenna arrays with fixed sidelobe level using real-coded genetic algorithm
TL;DR: In this paper, an optimization method based on real-coded GA with elitist strategy for thinning a large linear array of uniformly excited isotropic antennas to yield the maximum relative sidelobe level (SLL) equal to or below a fixed level.
Journal ArticleDOI
Doubly Curved Reflector Design for Hybrid Array Fed Reflector Antennas
TL;DR: In this article, a generalized analytical formulation for the design of doubly curved reflectors fed by line sources of any shape, including straight, circular, and even elliptical profiles, is discussed.
Journal ArticleDOI
A Low-Profile Beamforming Patch Array With a Cosecant Fourth Power Pattern for Millimeter-Wave Synthetic Aperture Radar Applications
TL;DR: In this article, a beamforming patch array with a cosecant fourth power pattern is proposed for millimeter-wave synthetic aperture radar (SAR) applications, which enables radar receiving identical power in the field of view, provided that the radar cross section levels of targets within the illuminated area are similar.
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