Publisher : The Korean Institute of Electromagnetic Engineering and Science
DOI : 10.5515/KJKIEES.2016.27.6.504
Title & Authors
Near-Field Rx-Measurement for Active Phased Array of Digital Radar Using Calibration Path Yu, Je-Woo; Chae, Heeduck; Park, Jongkuk; Lim, Jae-Hwan; Kim, Duckhwan; Jin, Hyoung-Seog; Kim, Han-Saeng;
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.
Digital Radar;Digital Beam Forming;Active Phased Array;Near-Field Measurement;
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