TY  - JOUR
T1  - Multiple TRM’s Automated Measurement and Calibration Method of AESA Radar System in X-Band
AU  - Park, Byung-jun 
AU  - Cho, Jung-il 
AU  - Jung, Jong-hun 
AU  - Choi, Woon-sung 
JO  - The Journal of Korean Institute of Communications and Information Sciences
PY  - 2024
DA  - 2024/1/1
DO  - 10.7840/kics.2024.49.4.630
KW  - AESA
KW  - ATE
KW  - Calibration algorithm
KW  - Switch Matrix
KW  - TRM
AB  - This paper presents an automated measurement and calibration algorithm for multiple Transmitter Receiver Modules (TRMs) in AESA (Active Electronically Scanned-Array) radar system in the X-band. The previously developed Automated Test Equipment (ATE) could only measure one TRM at a time, leading to reduced efficiency due to the need for repeated replacement and testing. Additionally, the previous calibration algorithm did not account for the error rate of the test jig. To address these issues, we simultaneously measured four TRMs to reduce testing time and improved calibration accuracy through a supplementary algorithm. We also added new measurement items such as In/Out delay time, pulse rising/falling time, spurious signals, Look-Up Table (LUT) generation through calibration, power consumption analysis and characteristic conversion results according to ambient temperature changes. A water-cooled chiller provided a uniform temperature environment for multiple TRM measurements and a user-centered GUI facilitated the addition and modification of measurement items. Our approach resulted in a 10.4% reduction in testing time compared to existing equipment and achieved results within ±1dBp-p and within ±5°of phase error through our supplemented phase/amplitude calibration algorithm.