Synthesis of linear antenna arrays

Murthy, P Krishna; Kumar, Anurag

doi:10.1109/tap.1976.1141426

Cited by 39 publications

(12 citation statements)

References 14 publications

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“…The Gaussian pattern given by (9) has also been synthesized employing the L,-norm making use of Lawson's algorithm [ 9 ] . The iteration process is initiated from four different sets of initial element positions.…”

Section: A Illustrationmentioning

confidence: 99%

Synthesis of equally excited linear arrays

Kumar

Murthy

1977

IEEE Trans. Antennas Propagat.

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Synthesis of linear arrays employing a perturbation technique to achieve sidelobe reduction by varying element positions alone or phases of antenna currents alone, keeping magnitudes of antenna currents equal, is discussed. Both the mean squared and minimax error criteria are employed. The technique may also be used to yield patterns with all sidelobes equal.Corresponding results calculated from ( 1 0) are shown by dotted lines in Figs. 1 and 2. The agreement between them is fairly good considering ( I O ) includes only single diffracted rays. It may be noted that (10) does not give very accurate results when K = ka is small, or when K = nn. In those cases, the more sophisticated ray theory in [3] may be used.For completeness, we will show that the values of B, in (5) and (6) c m be calculated from the results for radiation characteristics. If we denote the radiation field as

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Section: A Illustrationmentioning

confidence: 99%

Synthesis of equally excited linear arrays

Kumar

Murthy

1977

IEEE Trans. Antennas Propagat.

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“…This is important to reduce interference from the side lobe of the antenna. There are several parameters by varying which the radiation pattern can be modified [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. These parameters are geometrical configurations (e.g.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of circular antenna arrays for reduction of side lobe and first null beamwidth using PSOIIW

Ram

Das

Mandal

et al. 2013

2013 Annual IEEE India Conference (INDICON)

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A design problem of non-uniform circular antenna arrays for maximum reduction of both side lobe level and first null beamwidth is dealt with. This problem is modeled as a simple optimization problem. The method of particle swarm optimization with improved inertia weight (PSOIIW) is used to determine an optimal set of current excitation weights and antenna inter-element spacing that provides radiation pattern with maximum side lobe level (SLL) reduction and much improvement on first null beamwidth (FNBW) as well. Circular array antenna laying on x-y plane is assumed. PSOIIW is applied on circular arrays of 8-, 10-, and 12-elements. Various simulation results are presented and hence performances of side lobe and FNBW are analyzed. Experimental results show considerable reductions of both side lobe and FNBW with respect to the uniform case and some standard algorithms GA [7], PSO [8] and SA [14] applied to the same problem.

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“…A mass of research operations have been conducted in the previous few decades on various antenna array structures in order to acquire shrunken relative peak sidelobe level and the first null beamwidth [1]- [28]. Antenna Array is constituted by congregation of radiating elements in an electrical or geometrical conformation.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Circular Array Antenna Synthesis Based on Angular Positions

Bhattacharya¹

2012

IJIEE

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Abstract-In this paper, a broadside circular array antenna resting on x-y plane is assumed. Design aim here is to obtain the optimal combination of non-uniform angular positions of the elements and uniform radius for the array, so as to acquire the radiation with the lowest possible sidelobe peak (SLL) with least possible first null beamwidth (BWFN) increment. Optimum angular locations of elements are found using Real coded Genetic Algorithm (RGA).

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Synthesis of linear antenna arrays

Cited by 39 publications

References 14 publications

Synthesis of equally excited linear arrays

Synthesis of equally excited linear arrays

Synthesis of circular antenna arrays for reduction of side lobe and first null beamwidth using PSOIIW

Asymmetric Circular Array Antenna Synthesis Based on Angular Positions

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