TY - GEN
T1 - Calibrated Design of Beam-Steerable Antennas Fed by Varactor-Based Phase Shifters
AU - Yuan, Yuan
AU - Chen, Shengjian Jammy
AU - Fumeaux, Christophe
PY - 2023/5/31
Y1 - 2023/5/31
N2 - An accurate calibration procedure is proposed for a single-feed beam-steerable antenna controlled by varactor-based phase shifters working in differential pairs. The calibration is based on the performance curve of every phase shifter measured from dedicated sampling points on the circuit. A fast selection algorithm based on multi-objective optimization is employed to obtain the control voltages for all differential phase shifter pairs, according to the required phase differences. The final control voltages for a particular beam configuration are validated and fine-tuned on-board at the sampling points. To verify the effectiveness of this procedure, calibrated null-scanning of an 1 × 4 array is demonstrated. The calibrated array can realize null-scanning from -30° to 30° with a null-depth smaller than -21 dB and a null-position tolerance less than 2.5° from 4.75 to 5.25 GHz. These experimentally validated results suggest that the proposed calibration procedure is accurate for beam-scanning arrays fed by varactor-based phase shifters.
AB - An accurate calibration procedure is proposed for a single-feed beam-steerable antenna controlled by varactor-based phase shifters working in differential pairs. The calibration is based on the performance curve of every phase shifter measured from dedicated sampling points on the circuit. A fast selection algorithm based on multi-objective optimization is employed to obtain the control voltages for all differential phase shifter pairs, according to the required phase differences. The final control voltages for a particular beam configuration are validated and fine-tuned on-board at the sampling points. To verify the effectiveness of this procedure, calibrated null-scanning of an 1 × 4 array is demonstrated. The calibrated array can realize null-scanning from -30° to 30° with a null-depth smaller than -21 dB and a null-position tolerance less than 2.5° from 4.75 to 5.25 GHz. These experimentally validated results suggest that the proposed calibration procedure is accurate for beam-scanning arrays fed by varactor-based phase shifters.
KW - beam-steering antennas
KW - Calibration procedure
KW - null-scanning
KW - varactor-based phase shifters
UR - http://www.scopus.com/inward/record.url?scp=85162243124&partnerID=8YFLogxK
U2 - 10.23919/EuCAP57121.2023.10133387
DO - 10.23919/EuCAP57121.2023.10133387
M3 - Conference contribution
AN - SCOPUS:85162243124
T3 - 17th European Conference on Antennas and Propagation, EuCAP 2023
BT - 17th European Conference on Antennas and Propagation, EuCAP 2023
PB - Institute of Electrical and Electronics Engineers
T2 - 17th European Conference on Antennas and Propagation, EuCAP 2023
Y2 - 26 March 2023 through 31 March 2023
ER -