TY - GEN
T1 - Improving Calibration Accuracy of Scattered Field Based on Full Wave Simulation of Microwave Imaging System
AU - Zhang, Xinhui
AU - Ye, Xiuzhu
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - The transmission coefficient matrix measured by the vector network analyzer (VNA) needs to be calibrated as scattered field data for quantitative microwave imaging inversion. Before the calibration process, it is necessary to first assume the incident field distribution within the domain of interest (DOI), usually approximated with a spherical or plane wave function. Unfortunately, in the near field imaging system the approximate incident field within DOI is not accurate enough. In this paper, the incident field within the DOI is obtained based on full wave simulation of microwave imaging system, which greatly improves the calibration accuracy of scattered field, because of using the incident field closer to the actual measurement environment. Finally, representative numerical inversion results are presented to validate the superiority and accuracy of the proposed calibration method compared to the approximation method with a spherical wave function.
AB - The transmission coefficient matrix measured by the vector network analyzer (VNA) needs to be calibrated as scattered field data for quantitative microwave imaging inversion. Before the calibration process, it is necessary to first assume the incident field distribution within the domain of interest (DOI), usually approximated with a spherical or plane wave function. Unfortunately, in the near field imaging system the approximate incident field within DOI is not accurate enough. In this paper, the incident field within the DOI is obtained based on full wave simulation of microwave imaging system, which greatly improves the calibration accuracy of scattered field, because of using the incident field closer to the actual measurement environment. Finally, representative numerical inversion results are presented to validate the superiority and accuracy of the proposed calibration method compared to the approximation method with a spherical wave function.
UR - http://www.scopus.com/inward/record.url?scp=85207082261&partnerID=8YFLogxK
U2 - 10.1109/AP-S/INC-USNC-URSI52054.2024.10685968
DO - 10.1109/AP-S/INC-USNC-URSI52054.2024.10685968
M3 - Conference contribution
AN - SCOPUS:85207082261
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
SP - 171
EP - 172
BT - 2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024
Y2 - 14 July 2024 through 19 July 2024
ER -