Journal ArticleDOI
Transmission and Reception by Ultra-Wideband (UWB) Antennas
TLDR
An antenna's transient response can be used to determine the suitability of the antenna in wideband applications, and the radiation and reception properties of various conventional ultra-wideband antennas in the time domain are illustrated.Abstract:
Broadband antennas are very useful in many applications because they operate over a wide range of frequencies. The objective of this paper is to study the transient responses of various well-known antennas over broad frequency ranges. As such, the phase responses of these antennas as a function of frequency are of great interest. In the ensuing analysis, each antenna is excited by a monocycle pulse. Many antennas show resonant properties, and numerous reflections exist in the antennas' outputs. The first part of this paper deals with ways of converting various resonating antennas to traveling-wave antennas by using resistive loading. Appropriate loading increases the bandwidth of operation of the antennas. However, the drawback is the additional loss in the load applied to the antenna structure, leading to a loss of efficiency to around fifty percent. However, some of the antennas are inherently broadband, up to a 100:1 bandwidth. Hence, the transient responses of these antennas can be used to determine their suitability for wideband applications with a low cutoff frequency. The second part of the paper illustrates the radiation and reception properties of various conventional ultra-wideband (UWB) antennas in the time domain. An antenna's transient response can be used to determine the suitability of the antenna in wideband applicationsread more
Citations
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Journal ArticleDOI
Position Estimation via Ultra-Wide-Band Signals
Sinan Gezici,H.V. Poor +1 more
TL;DR: In this article, the authors present an overview of the basic structure of UWB signals and their positioning applications, followed by a discussion of various position estimation techniques with an emphasis on time-based approaches, which are particularly suitable for UWB positioning systems.
Posted Content
Position Estimation via Ultra-Wideband Signals
Sinan Gezici,H.V. Poor +1 more
TL;DR: The problem of position estimation in UWB systems is reviewed, beginning with an overview of the basic structure of UWB signals and their positioning applications, followed by a discussion of various position estimation techniques, with an emphasis on time-based approaches, which are particularly suitable for UWB positioning systems.
Journal ArticleDOI
Design of a Compact Semi-Elliptic Monopole Slot Antenna for UWB Systems
TL;DR: In this article, a printed semi-elliptic monopole slot antenna for use in ultrawideband (UWB) communication systems is presented, which features a coplanar waveguide signal strip terminated with a semi-ELLiptic stub and a modified ground plane to achieve wide bandwidth from 2.85-20 GHz.
Journal ArticleDOI
Compact, Dual-Polarized UWB-Antenna, Embedded in a Dielectric
TL;DR: In this paper, a dual-polarized antenna for ultrawideband (UWB) applications is described, which is based on the tapered slot antennas, enclosed in a dielectric.
Journal ArticleDOI
Square monopole antenna for ultra wide band communication applications
TL;DR: In this paper, a printed square monopole antenna for UWB communication applications is presented, where slits are introduced to reject the IEEE 802.11a and HIPERLAN/2 bands used for WLAN applications.
References
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Book
Frequency independent antennas
TL;DR: In this article, it was shown that the pattern converges to the characteristic pattern as the frequency is raised, if a is not \infty, and that the impedance converges with the characteristic impedance for all a, assuming a to be positive, \varpi ranges from - ∞ to some finite value which determines the low frequency limit.
Book
The art and science of ultrawideband antennas
TL;DR: The history of UWB Antennas and their role as Transformers, Radiators, and Transducers, and their place in Systems.
Journal ArticleDOI
The cylindrical antenna with nonreflecting resistive loading
Liang-Chi Shen,Ryan D. King +1 more
TL;DR: In this paper, the distribution of current along a center-driven cylindrical antenna is obtained when the material forming the antenna is resistive, and a solution is obtained specifically when the current is represented by an outward traveling wave with no reflected wave.
Journal ArticleDOI
A parameter study of stripline-fed Vivaldi notch-antenna arrays
Joon Shin,D.H. Schaubert +1 more
TL;DR: In this article, a parameter study of the wideband performance of the Vivaldi notch-antenna arrays demonstrates that the wide-band performance can be improved systematically by increasing the antenna resistance through a change of design parameters.
Journal ArticleDOI
Baseband-pulse-antenna techniques
D. Lamensdorf,L. Susman +1 more
TL;DR: In this paper, two approaches for describing the time-domain performance of an antenna were described, one of which uses the transfer function, a function which describes the amplitude and phase of the response over the entire frequency spectrum, and the other one uses time domain parameters, such as efficiency, energy pattern, receiving area, etc.