Characteristic mode control via partial coating of reactive components on conducting surfaces

Characteristic mode control via partial coating of reactive components on top of conducting surfaces will be investigated in this study. The objective of the research is to lower the resonant frequency of a particular characteristic mode that has the desired radiation pattern, and excite it for radiation. The control can be implemented by loading capacitive and inductive components on top of conducting surfaces. For demonstration purpose, capacitive components are coated on a conducting surface to lower the resonant frequency of a particular characteristic mode, which radiates along the horizontal plane.