UWB magneto-dielectric ground plane for low-profile antenna applications Article

Erkmen, F, Chen, CC, Volakis, JL. (2008). UWB magneto-dielectric ground plane for low-profile antenna applications . IEEE ANTENNAS AND PROPAGATION MAGAZINE, 50(4), 211-216. 10.1109/MAP.2008.4653714

cited authors

  • Erkmen, F; Chen, CC; Volakis, JL



  • In low-profile applications, the antenna is often positioned very closely to an electrically conducting surface, or ground plane. Such a ground-plane backing significantly degrades antenna performance when the electrical height is less than λ/115. Existing approaches, such as lossless electromagnetic bandgap (EBG) structures and artificial magnetic conductors (AMC), tend to operate over a small bandwidth. This paper discusses two alternative ultra-wideband (UWB) approaches that laminate the ground plane with 'special magneto-dielectric (or ferrite) layers. The first approach employs a ferrite layer with a high μr/εr ratio to produce an in-phase reflection, similar to that caused by a perfect magnetic conductor (PMC). The second approach adapts a lossy ferrite with similar values of relative permeability, μr, and relative permittivity, εr. Radiation enhancements achieved via these ground-plane treatments will be demonstrated by simulated and measured examples. Design guidelines based on a parametric study will also be discussed.

publication date

  • August 1, 2008

Digital Object Identifier (DOI)

start page

  • 211

end page

  • 216


  • 50


  • 4