Tomographic Characterization of a Multifunctional Composite High-Impedance Surface

Kelvin J. Nicholson, Thomas C. Baum, Richard W. Ziolkowski, Kamran Ghorbani, Greg Bain

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)2904-2913
Number of pages10
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number6
StatePublished - Jun 2018


  • Artificial magnetic conductor
  • high-impedance ground plane
  • high-impedance surface (HIS)
  • meta-absorber
  • multifunctional structures
  • pregtronics

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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