Comparative study of radiation enhancement due to metamaterials
Article first published online: 7 OCT 2008
Copyright 2008 by the American Geophysical Union.
Volume 43, Issue 6, December 2008
How to Cite
2008), Comparative study of radiation enhancement due to metamaterials, Radio Sci., 43, RS6S02, doi:10.1029/2007RS003803., and (
- Issue published online: 7 OCT 2008
- Article first published online: 7 OCT 2008
- Manuscript Accepted: 24 JUL 2008
- Manuscript Revised: 14 JUL 2008
- Manuscript Received: 5 DEC 2007
- inverse source problem;
- antenna substrate;
- antenna performance
 We present a comparative study on radiation enhancement due to metamaterial antenna substrates. The study is performed via electromagnetic inverse source theory and constrained optimization. The aim of the study is to understand the effect of reference antennas on enhancement level estimates. The geometry of the problem is that of a piecewise-constant, radially symmetric, three-region system (spherical core-shell system). Particular attention is given to the case when the core and the shell are made up of lossless materials having oppositely signed constitutive parameters.