PIER Letters
 
Progress In Electromagnetics Research Letters
ISSN: 1937-6480
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 5 > pp. 131-136

NUMERICAL ANALYSIS OF PERIODIC PLANAR STRUCTURES ON UNIAXIAL SUBSTRATES FOR MINIATURIZATION PURPOSES

By F. Urbani

Full Article PDF (299 KB)

Abstract:
In this paper a numerical analysis of a periodic planar structure using a uniaxial substrate is shown. The paper means to explore the possibility to use non-conventional substrate to reduce the size of planar radiating structure. The encouraging numerical results set the ground for a further experimental analysis. The presented results can be applied easily to the design of planar antennas, arrays and Frequency Selective Surfaces (FSS). Currently the demand for multiband performance devices that can stay in the palm of the hand has become more compelling. In this light, the advance in planar radiating structure design using non-conventional material with the objective of size reduction is carried out. A FSS resonating at 20.75 GHz has been analyzed. Pyrolytic boron nitrite (PBN), which has an anisotropic dielectric with a relative electric permittivity represented by a diagonal tensor, is adopted as the substrate of the designed FSS to achieve the size reduction while maintaining the FSS performance. The design is then compared with the one that uses isotropic substrate (i.e., RO4003). Comparison shows that the introduction of such a non-conventional medium allows the patch size to be reduced approximately by 20% while maintaining almost the same electromagnetic performance. Issues about size reduction and frequency shifting are further presented and discussed in the paper.

Citation:
F. Urbani, "Numerical Analysis of Periodic Planar Structures on Uniaxial Substrates for Miniaturization Purposes," Progress In Electromagnetics Research Letters, Vol. 5, 131-136, 2008.
doi:10.2528/PIERL08111303

References:
1. Rahmat-Samii, Y., "Metamaterials in antenna applications: Classifications, designs and applications," IEEE International Workshop on Antenna Technology Small Antennas and Novel Metamaterials, 1-4, 2006.
doi:10.1109/IWAT.2006.1608960

2. Urbani, F. and Y. Zhou, Design of a compact dualband microstrip antenna loaded with anisotropic substrate, Proceedings of the 28th Annual Symposium of the Antenna Measurement Techniques Association (AMTA), 2006.

3. Urbani, F. and L. Vegni, Analysis of frequency selective surfaces loaded by chiral substrates, Proceedings of the 2005 IASTED International Conference on Antennas, Radar, and Wave Propagation (ARP2005), 2005.

4. Itoh, T., "Spectral domain immittance approach for dispersion characteristics of generalized printed transmission lines," IEEE Trans. Microwave Theory Tech., Vol. 28, 733-736, 1980.
doi:10.1109/TMTT.1980.1130158


© Copyright 2010 EMW Publishing. All Rights Reserved