Investigation of antenna structure consisting of crossed-field elements for strong EM radiation in the near-zone communications

We present a design of antenna structure consisting of two orthogonal elements to radiate strong EM field in the near-zone. The use of conjugate magnetic and electric elements not only provides a good mechanism of impedance matching, but also radiates orthogonally polarized fields to form the Poynting vector. The radiation efficiency can be enhanced and provides good communication quality for the near-field communications. Both numerical and experimental results based on exampled antenna design are presented to validate the concept.