Search results
time domain, according to Formula BW×T ≥4/π, which expresses the connection between bandwidth (BW) and pulse duration (T). For traditional communication technologies such as WiFi, bandwidths are limited to e.g. 20 MHz, resulting in a pulse width larger than 4 nanoseconds. In contrast, UWB systems of 500 MHz have time pulses of only 0.16 ns ...
1 Introduction. There are multiple techniques for generating UWB signals with various data modulation and randomization schemes. This Annex describes frequency-domain and time-domain measurement techniques of power spectral density for UWB transmissions and for all types of UWB signals.
UWB is a wireless communication technology characterized by transmitting data by transmitting a continuous pulse signal in a very short period of time [1]. Initially, Ultra-Wideband technology was primarily used in radar and military commu-nications to play an important role in stealth operations and precision ranging [2].
In this paper, the Transmission-Line Matrix (TLM) method in the time domain is utilized to determine the group delay of two printed circuit UWB antennas. The first one is a recently developed, new coplanar-waveguide antenna [27], the second a publishedmicrostrip antenna[9,10] with so far no informationabout phase variations. 4.2 Coplanar UWB ...
1 lis 2009 · In this paper, we propose a time-domain synthesis approach for ultra-wide band antennas. The method is based on a finite expansion of the antenna time-domain response.
UWB is an IEEE 802.15.4a/z standard technology optimized for secure micro-location-based applications. It enables distance and location to be calculated indoors or outdoors with unprecedented accuracy – within a few centimeters – by measuring the time it takes radio signals to travel between devices. Along with centimeter-level
9 gru 2020 · The study presented in this chapter intends to demonstrate the simulation and experimental design for the time domain characterization of UWB antennas. Modeling the antenna as a linear time...
