Effect of Mutual Coupling and Configuration of Concentric Circular Array Antenna on the Signal-to-Interference Performance in Cdma Systems

Fallahi, R.; Roshandel, Mehdi

doi:10.2528/pier07070104

Cited by 41 publications

(28 citation statements)

References 19 publications

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“…In practical antenna arrays, the elements affect each other through mutual coupling which significantly degrades the performance of the communication system [1][2][3]. Therefore, calibration techniques are developed to reduce the mutual coupling effects.…”

Section: Introductionmentioning

confidence: 99%

Localization of Narrow Band Sources in the Presence of Mutual Coupling via Sparse Solution Finding

Zhang¹,

Wan²,

Huang³

2008

PIER

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Abstract-Making use of the Toeplitz structure of the mutual coupling matrix of the Uniform Linear Array (ULA), estimating the direction-of-arrival (DOA) of the sources as well as the mutual coupling coefficients of the array can be formulated as a linear inverse problem, where the solution is given by the Kronecker product of the vectors with respect to the DOAs and the mutual coupling coefficients. Through mathematical manipulation, these solution vectors can be decoupled. Estimation of the DOAs is cast into the framework of sparse solution finding. To derive the solution, an alternating minimization technique is presented. The proposed method is firstly developed based on the noise free observation covariance matrix, and can be generalized to directly using the snapshots. Using the proposed method, DOA estimation is feasible even in single snapshot case. The performance of the proposed methods with covariance matrix, single snapshot and multiple snapshots are illustrated by computer simulations. Their ability to resolve closely spaced targets and the applicability to correlated sources have also been demonstrated.

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Section: Introductionmentioning

confidence: 99%

Localization of Narrow Band Sources in the Presence of Mutual Coupling via Sparse Solution Finding

Zhang¹,

Wan²,

Huang³

2008

PIER

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“…The primary method in all these research works is improvement of array pattern by manipulating the structural geometry to suppress the SLL while preserving the gain of the main beam. Among the different types of antenna arrays, CCAA [1,5] have become most popular in mobile and wireless communications. In this paper optimization of CCAA design having uniform interelement separations and non-uniform excitations is performed with the help of a novel evolutionary optimization technique.…”

Section: Introductionmentioning

confidence: 99%

“…There is abundant open technical literatures [1][2][3][4][5][6], bearing a common target -bridging the gap between desired radiation pattern having nil SLL with what is practically achievable. The primary method in all these research works is improvement of array pattern by manipulating the structural geometry to suppress the SLL while preserving the gain of the main beam.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of Concentric Circular Antenna Array Using Particle Swarm Optimization with Constriction Factor Approach

Mandal¹,

Ghoshal²,

Bhattacharjee³

2010

IJCA

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In this paper the maximum sidelobe level (SLL) reductions without and with central element feeding in various designs of three-ring concentric circular antenna arrays (CCAA) are examined using Particle Swarm Optimization with Constriction Factor Approach (PSOCFA) to finally determine the global optimal CCAA design. Binary coded Genetic Algorithm (BGA) is also employed for comparative optimization but it proves to be suboptimal. The present paper assumes non-uniform excitations and uniform spacing of excitation elements in each three-ring CCAA design. Among the various CCAA designs, the three-ring CCAA containing central element and 4, 6 and 8 elements in three successive concentric rings proves to be such global optimal design with global minimum SLL (-17.42dB) determined by PSOCFA.

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“…Various kinds of works have been carried out to modify the radiation pattern of basic and concentric circular arrays by optimizing its geometry. Major aspects of optimizing circular geometry include sidelobe performance improvement [2], [17], [18], [22], [28]; adaptive-beamforming [13]; mutual coupling [21]; thinning [25] etc. In this paper the design aim is to inhibit the proportion of the maximum sidelobe level (SLL) to main beam level for a circular antenna array.…”

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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Effect of Mutual Coupling and Configuration of Concentric Circular Array Antenna on the Signal-to-Interference Performance in Cdma Systems

Cited by 41 publications

References 19 publications

Localization of Narrow Band Sources in the Presence of Mutual Coupling via Sparse Solution Finding

Localization of Narrow Band Sources in the Presence of Mutual Coupling via Sparse Solution Finding

Optimal Design of Concentric Circular Antenna Array Using Particle Swarm Optimization with Constriction Factor Approach

Asymmetric Circular Array Antenna Synthesis Based on Angular Positions

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