TY - GEN
T1 - Metamaterial leaky wave antenna enabled efficient 3D spectrally-encoded microwave tomography using linear sampling method
AU - Salarkaleji, Mehdi
AU - Eskandari, Mohammadreza
AU - Chen, Jimmy Ching Ming
AU - Wu, Chung Tse Michael
N1 - Funding Information:
This work is supported by the National Science Foundation (NSF) Faculty Early Career Development (CAREER) Program under Grant ECCS-1552958. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
Publisher Copyright:
© 2017 IEEE.
PY - 2017/10/4
Y1 - 2017/10/4
N2 - The linear sampling method (LSM) is an effective method to detect complicated structures in a short time. In this paper, we develop a novel kind of LSM by means of metamaterial (MTM) leaky wave antennas (LWAs) to conduct spectrally-encoded three-dimensional (3D) microwave tomography that can reconstruct a conductive target with coaxial multi-layer and various diameter cylinders. The unique frequency-space mapping feature of MTM LWAs enables an efficient 3D microwave imaging with a larger field of view compared with conventional LSM approaches that usually operate at one single frequency. Validated through both theoretical analysis and experimental results, the proposed MTM imaging scheme allows us to reconstruct 3D shapes effectively with minimal prior knowledge of the target and computational resources. Furthermore, the measured results verify the proposed imaging method by successfully detecting the unknown targets with different shapes and locations for the MTM LWAs operating at 1.8-3 GHz.
AB - The linear sampling method (LSM) is an effective method to detect complicated structures in a short time. In this paper, we develop a novel kind of LSM by means of metamaterial (MTM) leaky wave antennas (LWAs) to conduct spectrally-encoded three-dimensional (3D) microwave tomography that can reconstruct a conductive target with coaxial multi-layer and various diameter cylinders. The unique frequency-space mapping feature of MTM LWAs enables an efficient 3D microwave imaging with a larger field of view compared with conventional LSM approaches that usually operate at one single frequency. Validated through both theoretical analysis and experimental results, the proposed MTM imaging scheme allows us to reconstruct 3D shapes effectively with minimal prior knowledge of the target and computational resources. Furthermore, the measured results verify the proposed imaging method by successfully detecting the unknown targets with different shapes and locations for the MTM LWAs operating at 1.8-3 GHz.
KW - Inverse scattering
KW - Leaky wave antenna
KW - Linear sampling method
KW - Metamaterial
KW - Microwave tomography
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U2 - 10.1109/MWSYM.2017.8058870
DO - 10.1109/MWSYM.2017.8058870
M3 - Conference contribution
AN - SCOPUS:85032497020
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 1371
EP - 1374
BT - 2017 IEEE MTT-S International Microwave Symposium, IMS 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 IEEE MTT-S International Microwave Symposium, IMS 2017
Y2 - 4 June 2017 through 9 June 2017
ER -