Maximisation of directive gain for circular and elliptical arrays

Cheng, David K.; Tseng, Fung-I

doi:10.1049/piee.1967.0120

Cited by 25 publications

(12 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using (15) and the definition of the outer product, the general form of the mn element of matrix A is…”

Section: Derivation Of Optimum Current and Maximum Directivitymentioning

confidence: 99%

“…Theoretical interest continued however unabated. We shall mention here a few [11][12][13][14][15][16][17][18][19], but exclude those based on Chebyshev polynomials since the mathematical technique in those papers is quite different. Some notable recent work on directivity maximisation was done by Azavedo [20,21] and Smierzchalski et al [22].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Maximum directivity of arbitrary dipole arrays

Shamonina

Solymár

2015

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

A fully analytical form, more general than any reported previously, for the optimum current distribution and maximum directivity of an arbitrary array consisting of dipoles parallel with each other, is derived. For an array configuration consisting of several hundred elements, a calculation takes a fraction of a second making many-element superdirective arrays candidates for adaptive antenna applications. Examples for two-dimensional (2D) and 3D arrays are given and some earlier superconductive arrays are revisited. It is also shown in further examples that superconductivity is not incompatible with moderate values of the quality factor.

show abstract

“…Using (15) and the definition of the outer product, the general form of the mn element of matrix A is…”

Section: Derivation Of Optimum Current and Maximum Directivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Maximum directivity of arbitrary dipole arrays

Shamonina

Solymár

2015

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

show abstract

“…For comparison, the standard maximum SNR beamformer [5] (without directional constraints) is also applied for which the weights are equal to…”

Section: Beamforming Strategymentioning

confidence: 99%

Performance evaluation of far field patterns for radio astronomy applications through the use of the Jacobi-Bessel series

Young

Maaskant

Ivashina

et al. 2012

2012 International Conference on Electromagnetics in Advanced Applications

View full text Add to dashboard Cite

The Jacobi-Bessel (JB) series representation for modeling reflector antenna patterns is proposed to be used as a reference tool to assess and improve the pattern shape of multi-beam wide-scan radio telescopes. After expanding each beam in JB functions, the number of dominant JB functions per beam not only serves as an indication of the beam calibratability (beam smoothness), but is a measure for the uniformity of the scanned patterns as well (inter-beam comparison). It is demonstrated that the first term in the JB series can be used to define directional constraints in a linear constrained minimum variance beamformer, so that each realized scanned beam pattern conforms to this first term. As a result, multiple beams cover a wide field of view in an almost undistorted manner.

show abstract

“…Royer [5] has investigates the properties of ring arrays for which i) the serration in the horizontal field pattern are small, ii) the mean horizontal directive gain is greater than that of one of the monopoles from the array. Cheng et al [6] derived the expressions for maximization of directive gain for circular and elliptical arrays.…”

Section: Introductionmentioning

confidence: 99%

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

Naik¹

2013

IJCA

View full text Add to dashboard Cite

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.

show abstract

Maximisation of directive gain for circular and elliptical arrays

Cited by 25 publications

References 3 publications

Maximum directivity of arbitrary dipole arrays

Maximum directivity of arbitrary dipole arrays

Performance evaluation of far field patterns for radio astronomy applications through the use of the Jacobi-Bessel series

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

Contact Info

Product

Resources

About