Mechanical Phase Error Correction of Active Phased Array Antennas Based on PSO Algorithm

Document Type : Original Article

Abstract

Each Channel of the phased array antenna innately has the amplitude and phase errors. The effect of mechanical
errors on the performance of the active phased array antennas is of great importance. In this paper two kinds of me-
chanical errors, namely, antenna structural distortions and random errors in element positions is studied and the rela-
tionship  between  the  electromagnetic  performance  and  the  mechanical  errors  of  the  antenna  is  proposed.  The  me-
chanical  errors  can  create  phase  errors  and  reduce the  antenna  performance,  for  instance  the  gain  reduction,  side-
lobe level increase, and inaccurate beam direction. In order to enhance the performance of the antenna in the pres-
ence  of  mechanical  errors,  a  phase  compensation  method  for  error  correction  using  Particle  Swarm  Optimization
(PSO)  is  proposed.  The  simulation  results  show  that  the  proposed  method  can  greatly  correct  the  phase errors  and
after correction the overall radiation pattern is recovered close to ideal radiation pattern without error.

Keywords

References

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Applied Electromagnetics
Volume 2, Issue 3 - Serial Number 3
October 2014
Pages 33-40

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History

  • Receive Date: 17 February 2016
  • Revise Date: 06 March 2019
  • Accept Date: 19 September 2018

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