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Near-Field Rx-Measurement for Active Phased Array of Digital Radar Using Calibration Path

보정 경로를 활용한 디지털 레이더의 능동 위상 배열 근접전계 수신시험

  • Received : 2016.04.18
  • Accepted : 2016.06.16
  • Published : 2016.07.07

Abstract

In this paper, the method is proposed that the equivalent result can be obtained by compensating the variation of gain and phase in the comparison with the result of near-field measurement which is obtained in the steady state, although the gain and phase variation of rx-channels occurred in the near-field rx-measurement of digital active phased array antenna. The proposed concept has the time section for monitoring the state of the rx-channels through the calibration path in the measurement timeline, and is the method for compensating the variation of state. For validating the proposed method, the fabricated X-band digital active phased array antenna and the planar near-field measurement facility is utilized. The proposed method is validated in the comparison with the compensated pattern which the unstable state of rx-channels is calibrated and the reference pattern obtained under the steady state of the rx-channels.

Keywords

Digital Radar;Digital Beam Forming;Active Phased Array;Near-Field Measurement

References

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