Table of Contents
International Journal of Microwave Science and Technology
Volume 2007, Article ID 46350, 5 pages
Research Article

Enhanced Gain Microstrip Patches Operating on Higher Order Modes

Department of Electromagnetic Field, Czech Technical University in Prague, Technick√° 2, Prague 166 27, Czech Republic

Received 4 May 2007; Accepted 10 July 2007

Academic Editor: Kamya Yekeh Yazdandoost

Copyright © 2007 Milan Polivka and Alois Holub. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Novel topologies of rectangular microstrip patches providing broadside radiated one point fed radiators with enhanced gain are compared. The principle of the gain enhancement is based on an extension of a source area. Dominant in-phase current distribution on the patch is maintained by using higher order mode and geometrical modification of the patch topology. That is achieved by introducing suitable perturbation elements in the shape of slots and notches. Two principal patch topologies operating on TM21 and TM03 modes are described. A comparison of simulated and measured properties of realized prototypes at 10 GHz band are presented. The results show that gain 12.3 dBi of single patch can be reached.