Design and Analysis of Spherical Inverted-F Antenna Cavity Model

The spherical inverted-f antenna having a spherically conformal rectangular patch antenna terminates with a quarter section of a metallic sphere. The spherical inverted-f antenna cavity model will be analyzed by using a new coordinate system which is custom curvilinear coordinate system. The conventional cavity method procedures can be applied by which the spherical structure is converted to an equivalent rectangular topology by mapping of coordinate transformation. By using this transformation, the wave equation is solved and also for predicting the input impedance, model characteristics, and antenna radiation parameter. Analytically simulated models are obtained for SIFA cavity model for different parameters of its fabrication.