Fig 25 - uploaded by Mutaz H.H. Khairi
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Circular disc connected to balun. 

Circular disc connected to balun. 

Source publication
Book
Full-text available
Since the United Sate Federal Communication Commission (FCC) released the first Ultra Wide-band (UWB) report on February 14, 2002, the interest in UWB technology has increased substantially in both academia and industry. Interest is to simulate by the expectation that UWB can solve the shortage of the available frequency recourses. The European Ele...

Citations

Conference Paper
This paper demonstrates the comparative analysis of the performances of two antenna designs, half wavelength Wireless Local Area Network (WLAN) patch antenna and a broadband Ultra wideband (UWB) monopole antenna. Both the antenna designs have been simulated utilizing the Advanced Design System (ADS) tools. During the investigations, it has been observed that the low profile antenna with its wide impedance bandwidth, quasi-Omni directional radiation pattern and high efficiency is quite promising for the existing communication and surgical instruments. In this work, we have simulated and measured the different essential parameters such as input reflection; voltage standing wave ratio (VSWR), radiation pattern, simulated current distributions and the efficiency of the proposed designs are also presented and analyzed. Measured results were taken using a Vector Network Analyzer (VNA).
Article
Full-text available
Abstract— The basic motivation behind the choice of ultra wide band based antennas in wireless communication systems is there expedient feeding structure, wide bandwidth along with uncomplicated structure and low cost. Ultra Wideband wireless communication systems are not only serving in enabling applications like wireless monitors, wireless printers and efficient transfer of data from digital electronic devices but this standard is also finding its application in transfer of files among handheld devices such as personal digital assistants and especially for the mobile handsets. With every passing day handheld devices are miniaturizing which has given rise to the need of development of flexible antenna structures. This paper serves to present the design of a two layer monopole antenna with a physically flexible design in order to facilitate the small design and different shapes of the handheld device, under consideration. High frequency structural simulator of Ansoft Corporation has been adopted as the key simulation tool for this design.