Investigations on modified rectangular fractal curve shaped dielectric resonator antenna

Abstract

In this article, a modified fractal rectangular curve (FRC)-shaped dielectric resonator antennas (DRA) with two different functionalities is reported. These antennas are split in the middle into two halves and are excited by a coaxial probe. In first configuration, the fractal geometry is used to achieve wide bandwidth from 3.5 to 5.0 GHz covering the body area network frequencies as well as the IEEE 802.11a WLAN frequencies. The average peak gain within the band is about 7 dBi. The second investigation involves miniaturization of rectangular DRA by using FRC along the cross-sectional boundary. By this, a DRA at 3.2 GHz could be realized using second iteration of modified rectangular curve fractal geometry resulting in a 50% size reduction by maintaining same radiation characteristics. V C 2012Wiley Periodicals, Inc. Int J RF and Microwave CAE 00:000-000, 2012.

Dielectric Resonator Antennas: Designs and Advances

“…Fractal DRA for wireless application is also reported by Gangwar et al in [37]. Fractal rectangular curve [38] is used to achieve wideband performance covering the Body Area Network and also the IEEE 802.11a frequencies. It also accomplishes miniaturization of 50% of a rectangular DRA using a modified rectangular fractal curve along the cross-sectional boundary.…”

Conceptual design approach of wideband fractal dielectric resonator antenna

“…Ghatak et al presented a fractal stacked DRA. It gives ∼35.29% percentage bandwidth [9]. Mukherjee et al use hemispherical shape ceramic to design the Apollonian Gasket fractal geometry.…”

Investigation on novel wideband fractal antenna design based on cylindrical shape dielectric resonator

“…First time, Prof. Ghatak with his fellow researcher proposed experimental investigation on Sierpinski fractal geometry‐based DRA. It provides approximately 31.1% bandwidth around center frequency . Sur et al proposed Minkowski fractal antenna with the help of equilateral triangular shaped DR.…”