Searched for: subject:"UWB"
(1 - 18 of 18)
document
Wang, J. (author), Aubry, P.J. (author), Yarovyi, O. (author)

A novel approach to full-polarimetric short-range imaging with rotating arrays is proposed. Instead of taking advantage of all four possible combinations of the polarizations of transmit and receive antennas as in the typical full-polarimetric imaging systems, the suggested antenna array acquires three different co-polarized measurements at...

journal article 2016
document
He, Y. (author)
Multistatic ultra-wideband radar is acknowledged to be useful for human tracking in indoor surveillance. In this thesis, a global signal processing chain for detection and localization of moving human targets using a multistatic ultra-wideband radar system is proposed. The design options for the system are presented, and the required signal...
doctoral thesis 2014
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Haider, S.N. (author), Caratelli, D. (author), Yarovoy, A.G. (author)
A planar, directive antenna with large fractional bandwidth is introduced in this paper. A detailed discussion on the proposed antenna topology and its architecture is reported. The proposed element is a combination of a patch and a loop radiator. A proper combination of the electric field radiator (patch) with a magnetic field radiator (loop...
journal article 2013
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Saputra, N. (author)
This thesis discusses the design and implementation of a transmitter and a receiver for an FM-UWB scheme in CMOS. The main challenge is to reach a power efficiency of better than 10 nJ/bit at a data rate of 100 kbit/s for both the transmitter and the receiver design. This thesis also discusses the design and implementation of a power management...
doctoral thesis 2012
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Wang, Y. (author)
The great demand for location-aware wireless sensor networks (WSNs) motivates the research in this thesis. The unique characteristics of WSNs impose numerous challenges on localization and communication. In this thesis, we handle some key challenges and provide affordable solutions. Impulse radio ultra wideband (IR-UWB) is employed as the...
doctoral thesis 2011
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Yang, Y. (author)
UWB radar is the most promising radar system for the future. In addition, by combining the UWB and array signal processing, one can obtain 3-D images of the objects for classification and identification, which is very useful in many applications. To achieve high-resolution real-time 3-D imaging radar, two essential items are missing in the...
doctoral thesis 2011
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Yang, B. (author), Yarovoy, A.G. (author), Valavan, A.S.E. (author), Buisman, K. (author), Shoykhetbrod, O. (author)
In this paper a novel differentially fed Ultra-Wide Band (UWB) antenna in low-temperature co-fired ceramics (LTCC) technology to be used in the 60 GHz band for integrated RF front-ends is presented. The antenna is based on the aperture stacked patch fed via H-shaped aperture to achieve more than 10 GHz operational bandwidth. The antenna is fed...
journal article 2011
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Zhuge, X. (author)
Compact, cost-efficient and high-resolution imaging sensors are especially desirable in the field of short-range observation and surveillance. Such sensors are of great value in fields of security, rescue and medical applications. Systems can be formed for various practical purposes, such as detecting concealed weapons in public places, locating...
doctoral thesis 2010
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Nezirovi?, A.N. (author)
Rescue dogs are commonly used during the urban search-and-rescue (USAR) operations for the initial indication on the presence of trapped victims after the collapse of man-made structures. However, dogs are not able to inform the rescue crews whether the trapped victims are alive or not and where exactly they are located. Other complementary...
doctoral thesis 2010
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Pietrzyk, M.M. (author)
Ultra-wideband (UWB) is a promising technology that offers a potential solution for the data rate, cost, power consumption and physical size requirements of the next generation wireless devices. UWB may also play an important role in the realization of future heterogeneous networking. This technology has recently gained significant interest from...
doctoral thesis 2010
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Zhao, Y. (author), Dong, Y. (author), Gerrits, J.F.M. (author), Van Veenendaal, G. (author), Ling, J.R. (author), Farserotu, J.R. (author)
A 9 mW FM-UWB receiver front-end for low data rate (<50 kbps), short range (<10 m) applications operating in the ultra-wideband (UWB) band centered at 7.45 GHz is described in this paper. A single-ended-to-differential preamplifier with 30 dB voltage gain, a 1 GHz bandwidth FM demodulator, and a combined (preamp/demodulator) receiver front-end...
journal article 2009
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Irahhauten, Z. (author), Dacuna, J. (author), Janssen, G.J.M. (author), Nikookar, H. (author), Yarovoy, A.G. (author), Ligthart, L.P. (author)
Ultrawideband (UWB) technology is an attractive alternative for short-range applications, e.g., wireless personal area networks. In these applications, transmit and receive antennas are very close to each other and the far-field condition assumed in most of the link budget models may not be satisfied. Under near-field conditions, variations in...
journal article 2008
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Savelyev, T.G. (author), Yarovoy, A.G. (author), Ligthart, L.P. (author)
This paper presents a 3-D imaging technique for an ultra-wideband (UWB) ground penetrating radar (GPR) with a single transmit antenna and a linear receive array. The video impulse GPR working in the frequency band of 0.3–3 GHz has been designed in IRCTR for landmine detection, i.e., for a near-field application. Installed on a vehicle it can...
journal article 2008
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Vorobyov, A.V. (author)
The goal of this thesis was to develop design concepts of the UWB antenna with improved characteristics for impulse radio applications. To reach this goal a number of theoretical and experimental investigations were carried out. The major result of the thesis is a number of novel concepts for UWB antennas including: - The shielded elliptically...
doctoral thesis 2008
document
Dang, Q.H. (author)
doctoral thesis 2008
document
Yarovoy, A. (author), Pugliese, R. (author)
The impact of an azimuthal slot in the antenna flair on the performance of a bowtie antenna has been analyzed. It has been shown that the slot is equivalent to resistance-capacitance loading. The resistance of the slot is physically caused by radiation of electromagnetic energy from the slot. Equivalent resistance and capacitance of the slot...
journal article 2006
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Gerrits, J.F.M. (author), Kouwenhoven, M.H.L. (author), Van Der Meer, P.R. (author), Farserotu, J.R. (author), Long, J.R. (author)
This paper presents a novel UWB communications system using double FM: a low-modulation index digital FSK followed by a high-modulation index analog FM to create a constant-envelope UWB signal. FDMA techniques at the subcarrier level are exploited to accommodate multiple users. The system is intended for low (110 kbps) and medium (1001000 kbps)...
journal article 2005
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Vorobyov, A.V. (author), Bagga, S. (author), Yarovoy, A.G. (author), Haddad, S.A.P. (author), Serdijn, W.A. (author), Long, J.R. (author), Irahhauten, Z. (author), Ligthart, L.P. (author)
For impulse radio ultrawideband communications an “antenna plus generator” system is co-designed and an on chip generator is integrated into the antenna. This approach does away with the need for intermediate transmission lines conventionally placed between an RF device/generator and an antenna and therefore eliminates the need for a balun,...
journal article
Searched for: subject:"UWB"
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