Small resonant fractal antennas

K. J. Vinoy; K. A. Jose; Vijay K. Varadan; Vasundara V. Varadan

doi:10.1117/12.436602

16 August 2001 Small resonant fractal antennas

K. J. Vinoy, K. A. Jose, Vijay K. Varadan, Vasundara V. Varadan

Proceedings Volume 4334, Smart Structures and Materials 2001: Smart Electronics and MEMS; (2001) https://doi.org/10.1117/12.436602
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

Reducing the size of an antenna has significant impact on their applications in modern communications system and in wireless sensors. However, as the antenna size is reduced, the real part of its input impedance reduces to near zero, and the imaginary part becomes very large. Meander line and zig-zag antennas have been used whenever small resonant antennas were required. Antennas using fractal geometry have been pursued in recent years for various advantages such as scale invariance and self-similarity. The apparent increase in the effective length of wire segments constituting the antenna forces the antenna to resonate at a lower frequency. In this paper we present the numerical studies on reducing the resonant frequency of a fractal geometry within a finite area, by the increase in fractal iteration order.

Citation Download Citation

K. J. Vinoy, K. A. Jose, Vijay K. Varadan, and Vasundara V. Varadan "Small resonant fractal antennas", Proc. SPIE 4334, Smart Structures and Materials 2001: Smart Electronics and MEMS, (16 August 2001); https://doi.org/10.1117/12.436602

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