Template-Type: ReDIF-Article 1.0
Author-Name:Muhammad Nasir, Talha Baber, Muhammad Abdullah, Muhammad Husnain Aslam
Author-Email:Muhammad.nasir@uet.edu.pk
Author-Workplace-Name:University of Engineering and Technology Lahore Faisalabad Campus
Title:High Isolation Low Profile MIMO Antenna for 5G Applications
Abstract:This articlefocuses  on  the multi-input  multi-output  (MIMO)antenna  with smaller dimensionsand   improved   isolation   between   the   ports   which   results   in goodperformanceand is suitable  for  modern  wireless  communication systems,especially USB dongle and 5G mobile applications.Two mainproblemswith the conventionalantennas are  (i)Largeheight  between the top  to  ground  plate and (ii)Smaller  isolation  between  the ports.These two problems are carefully addressedin the proposed design.The height in the proposed  antenna is  minimized  up  to  4mm  between the  topand to  ground  plate.Furtherachieved isolation is more  than -18dB  by  introducing  a  novel  type  of  periodic  slots  in  the ground  plate  of  the antenna.  Theantenna  structure  consists  of  a  ground  plate  and  two  top plates,  each  with  defined  dimensions.  The  parameters  are optimized  using  software  for the best  performance  of the antennato  ensure  efficient  signal  transmission  and  reception. The proposed  antenna aims  to  explore  the  impact  ofdimension  parameters  like  impedance matching  and  fractional  bandwidth  and  isolation  between  the  ports. The  antenna  resonates for 4.5GHz to 5.75GHz frequency bandwidth. The return loss for impedance bandwidth is below -20dB.  The  antenna  is  simulated  on software  andfabricated  on  substrate  FR4.  The simulated  and  measured  results are  compared  which indicates  that  this  antenna  with  high isolation  and  good  impedance  bandwidth is  a  moresuitable  candidate for  5G  mobile applications.Compared  to the conventional  same-class  antenna,  the  proposed  antenna  has good performance with minimized dimensions.
Keywords:Isolation;radiation patterns;return loss;DGS(defected ground structure), PIFA(planer inverted F antenna), SAR (specific absorption rate)
Journal:International Journal of Innovations in Science and Technology
Pages:907-915
Volume:7
Issue:2
Year:2025
Month:May
File-URL:https://journal.50sea.com/index.php/IJIST/article/view/1387/1904
File-Format: Application/pdf
File-URL:https://journal.50sea.com/index.php/IJIST/article/view/1387
File-Format: text/html
Handle: RePEc:abq:IJIST:v:7:y:2025:i:2:p:907-915