PROJECT TITLE :
Compact printed ultra-wideband diversity monopole antenna with slant inverted tree-shaped stub
ABSTRACT:
A compact two-port diversity antenna is proposed and experimentally investigated. One amongst the ports is connected to a microstrip feed, whereas the opposite port to a coplanar waveguide feed. The radiating elements are semi-circular disc-formed monopoles rotated around their centres. By shaping the common ground plane, ultra-wide impedance bandwidth is achieved. The measured bandwidths are 2–12 GHz at port 1 and 2.three–10.two GHz at port two. To obtain smart isolation between the ports, a slant inverted tree-shaped structure is attached at the corner of the ground plane. The measured isolation is regarding 20 dB throughout the band. The antenna has omni-directional radiation patterns with a moderate peak gain of two–7 dBi. To evaluate the range performance, the envelope correlation coefficient, diversity gain and capability loss are calculated. A changed design with impedance bandwidth at port 2 extending beyond eleven GHz is also presented. The proposed diversity antenna is an engaging candidate to produce polarisation diversity and enhance channel capability in an exceedingly rich scattering atmosphere.
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