This paper introduces the design of a dual-band internal F-PIFA (Fractal Planar Inverted F-antenna) as a candidate for use in the dual band WLAN (wireless local area network) MIMO (multi-input multi-output) applications. At first, the 4th iteration Koch’s fractal geometry has been applied to the edges of the conventional rectangular patch structure to design a single compact antenna with a dual...

In this paper, a wideband Sierpinski carpet patterned cylindrical Dielectric Resonator Antenna (DRA) operating in the X-Band is proposed. This DRA is realized from low cost Teflon. An impedance bandwidth of 50% is obtained covering the entire X-band with similar radiation pattern throughout the band. The average peak gain within the band is about 5.5 dBi.

This paper present the analysis and design a small size, low profile and multiband fractal cross dipole antenna. The proposed antenna design, analysis and characterization had been performed using the method of moments (MoM) technique. The new designed antenna has operating frequencies of 0.543 GHz, 2 GHz, and 6.5 GHz with acceptable bandwidth which has useful applications in communication syst...

Introduction Phase shifter (PS) in a phased array antenna shifts phase of incoming RF signal depending on control input, enabling antenna main beam to be steered at a faster rate without rotating antenna mechanically. Demand for high performance WLAN system at low cost has necessitated development of a miniaturized PS with reduced loss at low cost. Design and development of various types of PSs...

The aim of this paper is to design an antenna suitable for wireless applications. A small, low cost fractal antenna is designed, fabricated on a FR-4 substrate of size 28 mm x 28 mm and tested for this purpose in the laboratory using the N5230 A Agilent network analyzer. The simulation results show that the bandwidth achieved is 7.1 GHz. The experimental result of the fabricated antenna is also...

An investigation of magnetic current distribution of CPW fed arrow shaped UWB antenna is reported. This enables the precise prediction of working principle of UWB antenna, since the traditional UWB antenna simulations ignore important details. The computation was performed numerically for an arrow shaped antenna at different resonant frequencies at various input current phase changes and was fo...

In this paper, an ultra wideband antenna employing a defected ground structure is presented. The radiating element is a circular patch on which a fractal based geometry is inscribed in the form of slots and excited by a tapered feed-line for impedance matching. The antenna has an impedance bandwidth of 8.2 GHz (117% at centre frequency of 7GHz) and a peak gain around 6 dB. To improve the impeda...

We numerically investigate the electric potential distribution over a twodimensional continuum percolation model between the electrodes. The model consists of overlapped conductive particles on the background with an infinitesimal conductivity. Using the finite difference method, we solve the generalized Laplace equation and show that in the potential distribution, there appear the quasi-equipo...

A multiband monopole antenna with modified fractal loop parasitic is presented. By adding bow-tie patches and a modified fractal loop to the sides and bottom of a strip line monopole, respectively, the presented antenna can generate the multi-resonant frequencies for the application of wireless communication systems. The characteristics of the presented antenna have been examined by using the s...