On the Efficient Evaluation of Self and Mutual Admittances of CPW-Fed Slot Elements in Linear Arrays on Electrically Thin Substrates

• Published in: 2008 38th European Microwave Conference : 27-31 October 2008 pp. 1318 - 1321
• Main Authors: Jacobs, J.P., Joubert, J.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.10.2008
• Subjects: Admittance; Algorithm design and analysis; Coplanar waveguides; Dielectric substrates; Geometry; Iterative algorithms; Iterative methods; Microstrip antenna arrays; Moment methods; Mutual coupling
• ISBN: 2874870064; 9782874870064
• DOI: 10.1109/EUMC.2008.4751706

The evaluation of self and mutual admittances of CPW-fed slots on electrically thin dielectric substrates is addressed with reference to iterative array design procedures. A characterization of isolated slot self-properties indicated certain linear dependencies on slot dimensions, suggesting that less data may be required from computationally intensive a priori moment-method analyses of isolated slots. An approximate method for the fast, accurate calculation of mutual admittance between CPW-fed slots on electrically thin substrates is described. Its accuracy is shown to be comparable to moment-method-based calculations in IE3D. The method can be easily incorporated into iterative array design algorithms.