A new antenna model and a new formula for calculating the resonant frequency of an electrically thick rectangular microstrip patch antenna are presented. The model is based on the use of the Schwarz-Christoffel transformation and on a dielectric-loaded inhomogeneous rectangular cavity. The resonant frequency of the dominant mode is obtained by using a variational method. (C) 1994 John Wiley & Sons, Inc.
Lee, I., & Vander Vorst, A. (1994). Resonant-frequency Calculation for Electrically Thick Rectangular Microstrip Patch Antennas Using a Dielectric-loaded Inhomogeneous Cavity Model. Microwave & Optical Technology Letters, 7(15), 704-708. https://doi.org/10.1002/mop.4650071509 (Original work published 1994)