U-slot Loaded Rectangular Patch Antenna for Dual Band Operation
Amel Boufrioua
Journal of Electronic Systems, Vol. 3, No. 4, 2013.
DOI: 
Link: http://www.dline.info/jes/fulltext/v3n4/2.pdf
Abstract:
In this paper, a dual frequency resonance antenna is analysed by introducing U-shaped slot in a rectangular patch, the results in terms of return loss and radiation pattern are given. It is observed that various antenna parameters are obtained as a function of frequency for different value of slot length and width; it is easy to adjust the upper and the lower band by varying these different antenna parameters. In the present work variation of substrate permittivity is also studied. All the theoretical results using Matlab are compared with the simulated results obtained from Ansoft HFSS which are in close agreement.