Performance of Groundplane Shaping in Four-Element Dualband MIMO Antenna
Abstract: This work presents
performance of groundplane shaping and its effect in four element dualband multiple
input multiple output (MIMO) antenna. This proposed four element dualband MIMO
antenna consists of four bowtie dipole antenna which operates at 1800 MHz (low
frequency) and 2300 MHz (high frequency). This proposed four element dualband
MIMO antenna occupies a 270 x 210 x 100 mm 3 of FR 4 substrate. We use four
types of groundplane pattern i.e. full groundplane, cornered spatial
groundplane, crossed middle groundplane, and spiral groundplane. These various
grounplane patterns influence the performance of main parameters of dualband
MIMO antenna. Cornered spatial groundplane pattern yields a largest bandwidth
(VSWR ≤ 2) 282 MHz or 15.24% of center frequency at low frequency. Full groundplane
pattern creates 135.2 MHz at high frequency. In addition, cornered spatial
groundplane pattern also generates a lowest VSWR that is valued 1.21 at both
low frequency and high frequency. The S parameters, basically both cornered
spatial and full groundplane pattern produce a better return loss than two
others. All four groundplane patterns deliver equally a mutual coupling
parameter.The last, this proposed four element dualband MIMO with various
groundplane patterns gives a good farfield properties i.e. gain, radiation
pattern, H-E field.
Author: Subuh Pramono
Journal Code: jptkomputergg170167
