This paper introduces a programmable delay line circuit suitable for Impulse Radio Ultra Wideband (IR-UWB) architectures. When dealing with Impulse Radio Technologies, fine synchronisation used to be related to relative high cost devices. The low cost, low power architecture reported, has been tested into a COTS (Commercial Off The Shelf) breadboard, but is being easily implemented into Silicon...

Ultra-wideband (UWB) technology is foreseen as a promising solution to overcome the limits of ultra-high frequency (UHF) techniques toward the development of green radio frequency identification (RFID) systems with low energy consumption and localization capabilities. While UWB techniques have been already employed for active tags, passive tags solutions are more appealing also due to their low...

A low-cost and portable vector network analyzer (VNA) which covered operating frequency between 1MHz to 3GHz is used for vector reflection coefficient and standing wave ratio (swr) of the various microstrip antennas. This paper presents measurements of various ultra wideband (uwb) microstrip antennas for applications in biomedical field. Selection of antenna is an important key for detection of...

SUMMARY The commercialization of short-range wireless devices based on the principles of ultra-wideband (UWB) radio technology (UWB-RT) is widely expected within this decade, given the recent endorsement in the USA and Europe's similar efforts. The possible use and benefits of UWB-RT are significant in the areas of communications, imaging, ranging, sensing and public security. Also, the spectru...

Ultra wideband (UWB) radio is a new wireless technology that uses sub-nanosecond pulses to transmit information, resulting in a bandwidth greater than 1 GHz. The problem of synchronizing a receiver with the incoming signal grows in complexity as the signal bandwidth increases. This paper addresses coarse synchronization in UWB receivers. It analyzes how the design of the correlation process aff...

This thesis investigates the performances of the Rake receiving and the Transmitted Reference (TR) schemes for Ultra Wideband (UWB) communication systems. UWB technology has been proposed as a promising physical layer candidate for indoor wireless c:ommunications, because it offers very fine time resolution and multipath resolvability. Hovlrever, these beneficial properties also pose great chal...

Fig. 1. Inter-chip wireless communication within computer chassis Impulse radio systems have received much attention as a possible architecture for UWB transceivers due to the large data bandwidth, low spectral interference with nearby channels, and simplicity of UWB transmitter/receiver architectures using mostly digital implementations. Due to the low emitted power spectral density of -41.3dB...

Abstract—Since radio channels available have been assigned to traditional narrowband communication systems the only solution to establish new radio communication links is the frequency reuse. This has to be achieved without causing interference in the conventional radio systems. Ultra WideBand (UWB) radio uses extremely wideband wavelets to decrease the Power Spectral Density (psd) of radiated ...

This thesis evaluates the potential of Ultra Wideband Impulse Radio for wireless sensor network applications. Wireless sensor networks are collections of small electronic devices composed of one or more sensors to acquire information on their environment, an energy source (typically a battery), a microcontroller to control the measurements, process the information and communicate with its peers...