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Calibration method for array antenna considering mutual coupling in mobile satellite communications

Calibration method for array antenna considering mutual coupling in mobile satellite communications

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In this chapter, we propose a calibration method for an array antenna, which includes electromagnetic coupling between antenna elements. Conventional methods such as the rotating element electric field vector (REV) method for elements of an array antenna do not take into account the electromagnetic coupling between elements. If the antenna calibration is not properly performed, the radiation pattern of the radio waves in the undesired directions will increase and interfere with the other satellites that are not intended. To overcome this drawback, a model of an array antenna including the mutual coupling between antenna elements has been constructed. Using this model, the estimation problem of the effect of the mutual coupling is formulated as a formulation problem. Finally, a calibration method based on the solution of the optimization problem is derived and shows the effectiveness of the method through some numerical examples.

Chapter Contents:

  • 35.1 Introduction
  • 35.2 Array antenna model for calibration
  • 35.3 Array antenna calibration method considering mutual coupling
  • 35.4 Numerical evaluations
  • 35.4.1 Simulation conditions
  • 35.4.2 Simulation results
  • 35.5 Conclusion
  • Acknowledgments
  • References

Inspec keywords: antenna phased arrays; electromagnetic coupling; mobile satellite communication; antenna radiation patterns; antenna arrays; calibration

Other keywords: mobile satellite communications; array antenna; mutual coupling; antenna calibration; calibration method; rotating element electric field vector method; antenna elements; electromagnetic coupling

Subjects: Satellite communication systems; Antenna arrays; Mobile radio systems; Measurement standards and calibration

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