An investigation of concentric ring antennas with low sidelobes

Stearns, Charles O.; Stewart, A.

doi:10.1109/tap.1965.1138544

Cited by 92 publications

(33 citation statements)

References 6 publications

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“…The radiation pattern function of a concentric ring array has been expressed by Stearns and Stewart [1] as a truncated FourierBessel series and the non-uniform distribution of the rings has been approximated to a smaller number of equally spaced ones. N. Goto and D. K. Cheng showed that for a Taylor weighted ring array the maximum allowable inter-element spacing should be about four-tenths of a wavelength, if high sidelobes are to be avoided [2].…”

Section: Introductionmentioning

confidence: 99%

Comparative Performance of Gravitational Search Algorithm and Modified Particle Swarm Optimization Algorithm for Synthesis of Thinned Scanned Concentric Ring Array Antenna

Chatterjee¹,

Mahanti²,

Pathak³

2010

PIER B

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Abstract-Scanning a planar array in the x-z plane directs the beam peak to any direction off the broadside along the same plane. Reduction of sidelobe level in concentric ring array of isotropic antennas scanned in the x-z plane result in a wide first null beamwidth (FNBW). In this paper, the authors propose pattern synthesis methods to reduce the sidelobe levels with fixed FNBW by making the scanned array thinned based on two different global optimization algorithms, namely Gravitational Search Algorithm (GSA) and modified Particle Swarm Optimization (PSO) algorithm. The thinning percentage of the array is kept more than 45 percent and the first null beamwidth (FNBW) is kept equal to or less than that of a fully populated, uniformly excited and 0.5λ spaced concentric circular ring array of same scanning angle and same number of elements and rings.

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Section: Introductionmentioning

confidence: 99%

Comparative Performance of Gravitational Search Algorithm and Modified Particle Swarm Optimization Algorithm for Synthesis of Thinned Scanned Concentric Ring Array Antenna

Chatterjee¹,

Mahanti²,

Pathak³

2010

PIER B

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“…The radiation pattern function of a concentric ring array has been expressed by Stearns and Stewart [2] as a truncated Fourier Bessel series and the non-uniform distribution of the rings has been approximated to a smaller number of equally spaced ones. Goto and Cheng showed that for a Taylor weighted ring array the maximum allowable inter-element spacing should be about four-tenths of a wavelength, if high sidelobes are to be avoided [3].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Thinned Concentric Ring Array with Dipole Radiators Using Firefly Algorithm

Pavani¹,

Raju²,

Sridevi³

2014

IOSRJECE

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“…To overcome this concentric ring arrays are used and these are produces sidelobe level is about -17.6 dB for isotropic radiating elements. But most of the researchers [15][16][17][18][19][20][21][22], they are reported to control the sidelobe levels using different techniques. These techniques are decreases the first sidelobe level only.…”

Section: Introductionmentioning

confidence: 99%

Optimum Directivity Patterns of Concentric Ring Arrays with Dipole Radiators for Wireless Communications

Naik¹

2013

IJCA

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In the literature survey concentric ring arrays using isotropic radiators are reported. Sufficient data is not available to optimization of the first sidelobe level, null to null beamwidth and directivity. In this paper, the author is proposed the problem of designing concentric ring arrays with practical radiating element. The practical radiating element is considered as dipoles to achieve optimum directional patterns for wireless communications. The numerically simulated patterns are computed and compared with the concentric isotropic ring arrays for different number of concentric rings.

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An investigation of concentric ring antennas with low sidelobes

Cited by 92 publications

References 6 publications

Comparative Performance of Gravitational Search Algorithm and Modified Particle Swarm Optimization Algorithm for Synthesis of Thinned Scanned Concentric Ring Array Antenna

Comparative Performance of Gravitational Search Algorithm and Modified Particle Swarm Optimization Algorithm for Synthesis of Thinned Scanned Concentric Ring Array Antenna

Synthesis of Thinned Concentric Ring Array with Dipole Radiators Using Firefly Algorithm

Optimum Directivity Patterns of Concentric Ring Arrays with Dipole Radiators for Wireless Communications

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