TY - JOUR
T1 - Tomographic Characterization of a Multifunctional Composite High-Impedance Surface
AU - Nicholson, Kelvin J.
AU - Baum, Thomas C.
AU - Ziolkowski, Richard W.
AU - Ghorbani, Kamran
AU - Bain, Greg
N1 - Funding Information:
Manuscript received October 1, 2017; revised January 18, 2018; accepted March 6, 2018. Date of publication April 9, 2018; date of current version June 4, 2018. This work was supported by the Australian Department of Defense, Defense Science and Technology Group SRI-Advanced Materials and Sensors Program, the Defense Science Institute, an initiative of the State Government of Victoria, and the Australian Research Council under Grant DP160102219. (Corresponding author: Kelvin J. Nicholson.) K. J. Nicholson, T. C. Baum, and G. Bain are with the Defense Science and Technology Group, Melbourne, VIC 3207, Australia (e-mail: kelvin.nicholson@dst.defense.gov.au; thomas.baum@dst.defense.gov.au; greg.bain@dst.defense.gov.au).
Publisher Copyright:
© 1963-2012 IEEE.
PY - 2018/6
Y1 - 2018/6
N2 - The performance of a multifunctional composite high-impedance surface (HIS) has been evaluated using the coherent Doppler tomography (CDT) and finite-impulse response (FIR) filtering techniques. A combination of embroidery and advanced laser manufacturing processes were used to fabricate the conformable multifunctional glass fiber reenforced polymer HIS. The CDT method was utilized because it enabled the generation of a high-resolution tomographic map of the HIS reflectivity. Tomograms generated at high incidence angles (>80° from normal) were used to localize and FIR filter unwanted scattering associated with the ground plane edges and HIS transition regions. The resulting scattered fields from a defect (metallic block positioned in the center of the tomogram) were then used to gain a significantly distinctive insight into the HIS scattering properties. Furthermore, unlike traditional methods for characterizing HISs, the CDT and FIR methods presented herein are applicable to electrically large and conformal HISs.
AB - The performance of a multifunctional composite high-impedance surface (HIS) has been evaluated using the coherent Doppler tomography (CDT) and finite-impulse response (FIR) filtering techniques. A combination of embroidery and advanced laser manufacturing processes were used to fabricate the conformable multifunctional glass fiber reenforced polymer HIS. The CDT method was utilized because it enabled the generation of a high-resolution tomographic map of the HIS reflectivity. Tomograms generated at high incidence angles (>80° from normal) were used to localize and FIR filter unwanted scattering associated with the ground plane edges and HIS transition regions. The resulting scattered fields from a defect (metallic block positioned in the center of the tomogram) were then used to gain a significantly distinctive insight into the HIS scattering properties. Furthermore, unlike traditional methods for characterizing HISs, the CDT and FIR methods presented herein are applicable to electrically large and conformal HISs.
KW - Artificial magnetic conductor
KW - high-impedance ground plane
KW - high-impedance surface (HIS)
KW - meta-absorber
KW - multifunctional structures
KW - pregtronics
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U2 - 10.1109/TMTT.2018.2818154
DO - 10.1109/TMTT.2018.2818154
M3 - Article
AN - SCOPUS:85045212733
VL - 66
SP - 2904
EP - 2913
JO - IRE Transactions on Microwave Theory and Techniques
JF - IRE Transactions on Microwave Theory and Techniques
SN - 0018-9480
IS - 6
ER -