Design of in-situ antennas using platform characteristic modes

The design of in-situ antennas is conducted using the theory of characteristic modes. By performing a characteristic mode analysis of the supporting platform, the optimal spatial regions of antenna-platform coupling can be located, as well as approximate limits on bandwidth. Then, for a given choice of antenna, the proper feed location can be optimized rapidly based on its near-field profile, incident onto the platform characteristic modes. Examples detailing a characteristic mode-based in-situ antenna design will be shown for complex-shaped, realistic platforms to illustrate its utility.