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Reliability Evaluation Method for Array Antenna Considering Performance Changes.

Xinxin Huang1, Sai Zhu1, Guanhui Liang1

  • 1Department of Electronic and Optical Engineering, Shijiazhuang Campus, Army Engineering University of PLA, Shijiazhuang 050003, China.

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|March 28, 2024
PubMed
Summary
This summary is machine-generated.

This study improves array antenna reliability evaluation by accounting for transmit/receive (T/R) module failures. The new method accurately assesses antenna performance, solving overestimation issues in existing models.

Keywords:
array antennaperformancereliability evaluationsubarray

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Area of Science:

  • Electrical Engineering
  • Reliability Engineering
  • Antenna Theory

Background:

  • Existing array antenna reliability evaluation methods, such as the n/k system, often overestimate reliability.
  • This overestimation occurs because the impact of failed transmit/receive (T/R) modules on overall antenna performance is not fully considered.

Purpose of the Study:

  • To develop a more accurate reliability evaluation method for array antennas.
  • To address the overestimation issue in current methods by incorporating the performance degradation caused by T/R module failures.

Main Methods:

  • A novel reliability evaluation method was established that considers performance changes due to T/R module failures at various locations.
  • The method calculates the performance and probability of different array antenna states, determining accurate reliability by summing probabilities of all available states.
  • For large-scale array antennas, a subarray-based approach was developed, analyzing individual subarray performance and reliability to compute the overall system reliability.

Main Results:

  • The proposed method successfully accounts for performance variations resulting from T/R module failures.
  • The overestimation problem inherent in previous reliability evaluation techniques was resolved.
  • A significant improvement in the accuracy of array antenna reliability evaluation was achieved.

Conclusions:

  • The developed reliability evaluation method provides a more accurate assessment of array antenna performance under T/R module failure conditions.
  • The subarray-based approach offers an efficient way to evaluate the reliability of large-scale array antennas.
  • This research enhances the reliability assessment of critical antenna systems.