Analysis of a Uniform Linear Broadside Dipole Antenna Array Operating at 1.8 GHz for Use in GSM Application.


Aras Saeed Mahmood and Dlnya Aziz Ibrahim

Assist. Prof. and Head of the School of Science Education at University of Sulaimani in Kurdistan Region
M.Sc. Student at School of Science Education at University of Sulamani in Kurdistan Region, Physics Department


Abstract

A uniform broadside array antenna is the arrangement of equally spaced and equal
current amplitude excitation of identical antennas, which are placed along the axis
perpendicular to the direction of maximum radiation. The overall radiation pattern of an
array is determined by array factor combined with the radiation pattern of the antenna
element. The number of the elements and their spacing may produce the diverse radiation
properties. In this work the impact of these two factors on the radiation characteristics of
a uniform linear broadside dipole array were analyzed using the 4NEC2 simulation
software. The spacing between the elements varied from 0.1λ to 2λ in steps of 0.02λ for
a number of elements up to 10 elements. For GSM application at 1.8GHz frequency the
best configuration to achieve the required gain of 13.8dBi was 7-elements with 0.88λ
spacing.

Key Words:
Gain
Half power beamwidth
Radiation pattern
Max. Side lobe level
No. of side lobes


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