Njoku_IEEE_TAP_2012.pdf (1.3 MB)
Download file

Simulation methodology for synthesis of antenna substrates with microscale inclusions

Download (1.3 MB)
journal contribution
posted on 26.06.2012, 07:45 by Chinwe C. Njoku, William WhittowWilliam Whittow, J. C. Vardaxoglou
This paper investigates the behavior of heterogeneous dielectric substrates synthesized by adding micro-sized inclusions to a host medium. This paper compares different analytical formulations for small spherical inclusions in infinite media and assesses their suitability to be applied to different geometries. The effective permittivity of the mixture has been shown to be dependent on the properties of the host and inclusions' materials as well as the size and spacing of the spheres. Electromagnetic (EM) simulations using a plane wave excitation have also been carried out investigating thin (finite) layers of both spherical and cubical inclusions. A rectification algorithm was employed to correctly obtain the effective permittivity from the scattering parameters. The analytical results of the infinite medium showed good agreement with the EM simulations of our samples of finite thickness. Finally, a patch antenna with a heterogeneous substrate has been designed to show that the method can be applied to a finite geometry which is finite in three dimensions.


This work was supported by EPSRC under Grant No. EP/I01490X/1.



  • Mechanical, Electrical and Manufacturing Engineering


NJOKU, C.C., WHITTOW, W.G. and VARDAXOGLOU, J.C., 2012. Simulation methodology for synthesis of antenna substrates with microscale inclusions. IEEE Transactions on Antennas and Propagation, 60 (5), pp.2194-2202.




AM (Accepted Manuscript)

Publication date



© 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.