The large spectral occupancy of ultrawideband (UWB) wireless signals significantly complicates the design of multi-antenna arrays and the characterization of propagation channels determining the performance of such arrays. This survey paper develops generic techniques for double-directional UWB channel characterization, and surveys methods for the extraction of the parameters of multipath compo...

This contribution presents the work in progress towards an active UWB antenna array with beamforming capabilities. Small pulse generators were designed, manufactured and placed directly underneath small uwb monopoles. We show preliminary results of the first measurement campaign with a single antenna and a group antenna in the time domain.

A small printed monopole antenna for ultra wide band applications is proposed. The shape of the radiating patch considered is rectangular. The effect of the current distribution has been studied. The patch configuration is then modified to improve the impedance bandwidth. The dimensions of the patch and the distance between ground plane and radiating patch are optimized using the Genetic Algori...

This paper describes the comparision of a microstrip-fed monopole ultra wideband antenna with and without notch. In case of notch the notch-band characteristics is achieved by Cshaped ring resonator. The paper gives better understanding of antenna parameters such as return loss, VSWR etc., and its variation in performance of antennawith and without notch. Also presents the effect of parameters ...

© 2013 Jung-Nam Lee et al. 1075 http://dx.doi.org/10.4218/etrij.13.0113.0472 This paper describes an ultra-wideband (UWB) antenna that uses a ring resonator concept. The proposed antenna can operate in the entire UWB, and the IEEE 802.11a frequency band can be rejected by inserting a notch stub into the ring resonator. The experiment results indicate that the measured impedance bandwidth of the...

Abstract— A novel compact CPW ultra-wideband (UWB) antenna combined with a compact band-selective filter is proposed. The proposed antenna without filter satisfies the return loss requirement of less than −10 dB over the frequency range of 3.0 GHz to 12.1GHz. The optimized antenna has dimensions of 10×16mm2 on a Teflon substrate (εr = 3.48) with good radiation characteristics and is easy to fab...

Micro strip patch antennas are widely used in compact, conformal and lowcost wireless applications due to its advantages over conventional antenna. Literature study of last few decades of micro strip patch antenna (MPA) shows that the different techniques are used to design a small size micro strip patch antenna. In this paper survey is conducted on different antenna designing methods like E sh...

Antennas that are capable to radiate in the Ultra-wideband (UWB) range is a major area of current research. The UWB range is accompanied through the integration of Multiple-InputMultiple-Output (MIMO). In this paper, two circular monopole antennas are acting as the radiating elements. A T-shape stub is placed between the radiator elements to enhance isolation. The proposed antenna is capable of...

This paper presents comparison of two measurement techniques for ultra wideband (UWB) off-body radio channel characterization. A measurement campaign was performed in indoor environment using UWB wireless active tags and reader installed with the tag antenna and same set of measurement was repeated in the frequency domain using Vector Network Analyser (VNA) and cable connecting two standalone t...

This paper deals with the embedded network dedicated to the entertainment system of passenger cabin in an aircraft. The work described in this paper focuses on a wireless solution to interconnect the main components of this system. The selected solution is UWB with smart antennas. This solution is proved to be able to provide the system with the needed bandwidth. The self-configuration capabili...