ABSTRACT
Circular
phase array antenna has wide application in Mobile communication system for
object to increase system capacity through reduction of co-channel interference
caused by a single cell adjacent cells. These improvements in system capacity
depend mainly on the antenna beam pattern and directivity and the process is a
kind of spatial filtering, known by Space Division Multiple Axes ( SDMA). In
this paper a theoretical calculation and MAT-LAB simulation was performed to
evaluate beam pattern and antenna directivity considering different design
parameters such as number of radiator element, circle radius, excitation
current distribution, and beam scanning . This paper show also through MAT-LAB
calculation, that by adopting such circular array antenna in Mobile Base
Station, leads to improve the reverse-link capacity for a typical Direct
Sequence Code Division Multiple Access (DS-CDMA) cellular mobile communication
system.
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