volume | PIER Journals

2018-09-22

A New Synthesis Algorithm for Minimization of Coplanar Distributed Antenna Arrays in WSNs

Heba Soliman Dawood,

Dr. Heba Soliman Dawood

Electronics and Electrical Communications Engineering Dept., Faculty of Engineering

Tanta University

Egypt

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Amr Hussein Hussein Abdullah,

Professor Amr Hussein Hussein Abdullah

Tanta University

Egypt

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Entesar Gemeay,

Dr. Entesar Gemeay

Electronics and Electrical Communications Engineering Dept., Faculty of Engineering

Tanta University

Egypt

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Mohmoud Ahmed Attia Ali

Dr. Mohmoud Ahmed Attia Ali

Electronics and Electrical Communications Department, Faculty of Engineering

Tanta University

Egypt

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Progress In Electromagnetics Research C, Vol. 87, 73-85, 2018

doi:10.2528/PIERC18061104

Abstract

Distributed antenna arrays are arbitrarily large groups of neighboring nodes which are controlled to form virtual antenna arrays for both transmission and reception. Distributed beamforming (DBF) is widely used in wireless sensor networks (WSNs) and distributed massive Multi-Input Multi-Output (MIMO) systems. The research in DBF has been divided into four major research trends: radiation pattern analysis, optimization of power and lifetime, nodes synchronization, and array design. In this paper, a new algorithm is introduced to synthesize the radiation pattern of an arbitrarily distributed array using reduced number of distributed nodes. In this context, the reduction in the number of nodes results in minimizing the synchronization complexity between the synthesized array nodes and in minimizing the number of RF front ends. Thus, the overall system cost is reduced. In this algorithm, the three antenna array parameters (number of nodes, nodes locations, and nodes excitations) are properly adjusted to construct a close copy of the original array pattern. Different nodes selection ways are utilized to select the nodes required to synthesize the array for a desired radiation pattern. Also, uniform feeding and non-uniform feeding scenarios are introduced. In simulations, the proposed algorithm is applied to the synthesis of pencil-beam patterns. The simulation results reveal that the synthesized radiation patterns highly agree with the ordinary distributed array pattern in the case of non-uniform feeding. Also, the proposed algorithm can be applied to the synthesis of shaped-beam patterns via controlling the three aforementioned antenna array parameters and taking the shaped-beam pattern as the desired pattern in the algorithm.

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Heba Soliman Dawood, Amr Hussein Hussein Abdullah, Entesar Gemeay, and Mohmoud Ahmed Attia Ali, "A New Synthesis Algorithm for Minimization of Coplanar Distributed Antenna Arrays in WSNs ," Progress In Electromagnetics Research C, Vol. 87, 73-85, 2018.
doi:10.2528/PIERC18061104

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