Volume 38 Issue 3
May  2018
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CHEN Yanan, DONG Xiaolong. Error Analysis of Generation and Detection of Electromagnetic Vortex Using Uniform Circular Array[J]. Journal of Space Science, 2018, 38(3): 393-401. doi: 10.11728/cjss2018.03.393
Citation: CHEN Yanan, DONG Xiaolong. Error Analysis of Generation and Detection of Electromagnetic Vortex Using Uniform Circular Array[J]. Journal of Space Science, 2018, 38(3): 393-401. doi: 10.11728/cjss2018.03.393

Error Analysis of Generation and Detection of Electromagnetic Vortex Using Uniform Circular Array

doi: 10.11728/cjss2018.03.393
  • Received Date: 2017-02-22
  • Rev Recd Date: 2017-06-21
  • Publish Date: 2018-05-15
  • For realization of multiplexing of electromagnetic vortex, error performance of generating and detecting electromagnetic vortex by uniform circular array is analyzed. When generating electromagnetic vortex by the uniform circular array, there exists different excitation phase errors including Gaussian distribution error, quantified error, single element error et al. The electromagnetic vortex amplitude-phase characteristics are simulated and analyzed under these phase errors, then the orbital angular momentum modes are calculated, and the error thresholds are given when the modes can be accurately identified. At the same time, the amplitude-phase distribution is analyzed when the detecting array is not parallel to the generation array. Simulation results show that the magnitude of the electromagnetic vortex will become irregular and the phase will remain well within the width of the main lobe under various generating phase errors, and the orbital angular momentum mode cannot be recognized even under small inclination angle detecting error. The results indicate that the electromagnetic vortex has good anti-interference performance for these generating phase errors. However, it is highly sensitive to the inclination angle detecting error.

     

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