Antenna diversity is an effective solution to mitigate multipath fading signals and enhance the system capacity. Ultra wide band has become one of the most favourable technologies for wireless communications owing to its promising features such as low susceptibility to multipath fading, reduced probability of detection and intercept, and potentially high data rates. The aim of project is to des...

In this paper, a compact design and construction of microstrip Ultra Wide Band (UWB) antenna is proposed. The proposed antenna has the capability of operating between 4.1 GHz to 10 GHz. The antenna parameter in frequency domain analysis have been investigated to show its capability as an effective radiating element. Furthermore, time domain Gaussian pulse excitation analysis in UWB systems is a...

Generalising previous results for narrowband multiple-antenna channels, a quadratic growth in multipath with the array size is reported for ultra-wideband indoor channels, based on experimental analysis. It is shown that the observed increase in multipath is sufficient to guarantee multiple-antenna capacity growth linearly with the array size, facilitating multi-gigabit future wireless systems.

We generally categorize the approaches for ultrawideband antenna array design, and consequently propose simplified concepts for antenna arrays for a high-precision, ultra-wideband FMCW radar 2-D local positioning system to obtain robustness against multi path interference, perform angle of arrival analysis, as well as instantaneous heading estimation. We focus on low-cost and mechanical robust,...

In this paper, the design and analysis of a compact size coplanar waveguide (CPW)-fed antenna for ultrawideband (UWB) applications is presented. The antenna has a compact size of 20×20× 1.5 mm and provides a good impedance matching over the entire bandwidth of 3.2–14.3 GHz. The characteristics parameters, i.e. return loss, VSWR and radiation pattern, are analyzed using HFSS 11.0 software. Keywo...

This paper proposes some approaches to model Ultra Wideband (UWB) antenna arrays. Based on the array factor, often stipulated as not adapted for the description of the properties of UWB arrays in the literature, an analytical expression of the beampattern is developed. The achieved results are coherent with other formulations and empiric studies proposed in the literature. Furthermore, a time-f...

Since the release by the Federal Communications Commission (FCC) of a bandwidth of 7.5GHz (from 3.1GHz to 10.6GHz) for ultra wideband (UWB) wireless communications, UWB is rapidly advancing as a high data rate wireless communication technology. As is the case in conventional wireless communication systems, an antenna also plays a very crucial role in UWB systems. However, there are more challen...

In this research, a full wave simulator, IE3D, is used to analyze an ultra-wideband (UWB) antenna, where Taguchi’s method is applied as an external optimizer to drive IE3D and optimize the UWB antenna. The efficiency of this design procedure demonstrates the excellent optimization performance of Taguchi’s method. The desired frequency response of the UWB antenna is successfully achieved with on...

This paper describes the design, realization and experimental measurements of an antenna element to operate at ultra-wideband (UWB) spectrum. The type of this antenna is a circular disk monopole (CDM), with two notches opposite to each other at two sides of the disk. The feed of the antenna is a coplanar waveguide (CPW). The effect of the presence of the notches is studied through simulations a...

Proposed is a new simple technique for achieving band rejection characteristics in ultra-wideband monopole antennas. Two band notches were added to an existing UWB antenna by gluing a padding patch printed on a small single-layer piece of commercial substrate. The design of the new proposed structure has a controllable rejection in the 5 GHz WLAN and 8 GHz ITU frequencies while maintaining a wi...