Abstract
AbstractArray antennas offer a wide range of opportunities in the variation of their directivity patterns through amplitude and phase control. Directivity is one of very important parameters when optimizing Antenna. This paper intends to investigate the effects of different geometries of array antenna on directivity and side lobe levels. A six by four antenna array was chosen for investigation with uniform element spacing between the elements and the results were presented for each selected geometry, Array elements of dipole and patch antenna were chosen for the investigation and analysis. An analysis of the effect of the chosen antenna array was done by investigating its response when an incident emw (electromagnetic waves) from a mobile phone impinge on the array antenna where the tapering and beam-forming techniques were used for analysis and results presented.
Highlights
An antenna is used to radiate electromagnetic energy efficiently and in desired directions
An average improvement of 10% and 8% is achieved in link capacity for a signal to noise ratio (SNR) respectively of 10 dB and 20 dB in an indoor environment compared to a system employing non reconfigurable antenna arrays (Piazza, Kirsch, Forenza, Heath, & Dandekar, 2008)
A base station array antenna was designed for wireless communication and array tapering and beam forming techniques were employed so as to see its performance based on directivity and SLL results
Summary
An antenna is used to radiate electromagnetic energy efficiently and in desired directions. The configuration of switches effects the mutual coupling between the array elements, and subsequently, the radiation pattern of each antenna, leading to different degrees of pattern diversity which can be used to improve link capacity. Many examples are treated to show the effectiveness of the designs and the effect some other parameters might have on the overall performance of the array (Recioui, 2012), the examination of various aspects of beam steered linear array of isotropic radiators with uniform inter-element spacing in order to control beam broadening and to achieve SLL reduction in beam steered array, a novel method has been proposed by (Mukherjee et al, 2014) modifying primarily the search space definition for Particle Swarm Optimization. Directivity pattern for rhombic array using Rectangular patch antenna was done and found 19.01 dBi for specified Φ value, the maximum SLL value was found to be 9 dB
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