The chapter focuses on radio frequency aspects in UWB and is organised into four sections: the fi... more The chapter focuses on radio frequency aspects in UWB and is organised into four sections: the first section briefly summarises the main aspects about regulation issues of UWB technology; the second section describes antenna design and characterisation; the third section discusses UWB channel modelling and measurements; the last section describes localization and radar imagining with UWB technology.
2012 6th European Conference on Antennas and Propagation (EUCAP), 2012
An UWB slot antenna with a floating back plane is presented. The last is intended for antenna des... more An UWB slot antenna with a floating back plane is presented. The last is intended for antenna desensitization from the strong influence of the body proximity in Body Area Network radio links. The effect is demonstrated by comparison with other monopole-like or dipole-like UWB antennas (without any backplane) placed on the body.
This paper deals with the parametric modeling of UWB antenna response. Highly reduced model order... more This paper deals with the parametric modeling of UWB antenna response. Highly reduced model orders based on the singularity expansion method and the spherical modes expansion method are obtained, with extra reduction when antenna symmetries or pseudo symmetries are taken into account.
The chapter describes the activity carried out by COST 2100 on Body Area Networks (BANs) and is o... more The chapter describes the activity carried out by COST 2100 on Body Area Networks (BANs) and is organised into three sections: the first section discusses the applications and requirements; the secon section presents the activity on channel measurements and modelling; finally, the third section addresses the existing transmission technologies and describes the results obtained for PHY, MAC and NET layers; low power design is also addressed.
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005], 2005
ABSTRACT The design and results of a new UWB printed dipole antenna with a dielectric lens are pr... more ABSTRACT The design and results of a new UWB printed dipole antenna with a dielectric lens are presented.
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005], 2005
An UWB planar monopole with dual stripline fed (matched over a 3.2–9.2 GHz bandwidth) is designed... more An UWB planar monopole with dual stripline fed (matched over a 3.2–9.2 GHz bandwidth) is designed for low cost applications with an achieved input bandwidth of [3.2–9.2] GHz and size of (30×31×3 mm). The main drawback of such a fully planar design is the degradation of the omni-directionality beyond the first octave. The addition of simple orthogonal elements onto the monopole offers a very simple way to significantly reduce this effect. The improvements have been evaluated with specific UWB characterization tools.
ABSTRACT The first part of this article addresses the question of the representation of UWB anten... more ABSTRACT The first part of this article addresses the question of the representation of UWB antennas, particularly in the Time Domain, in terms of effectiveness, compactness and versatility. The second part of this work deals with the role of the antenna(s) in the effective radio link performance, taking into account antenna dispersion with respect to radio channel dispersion.
ABSTRACT RFID technology for use in real-time object identification is being rapidly adopted in s... more ABSTRACT RFID technology for use in real-time object identification is being rapidly adopted in several fields such as logistic, automotive, surveillance, automation systems, etc. [1]. A radiofrequency identification (RFID) system consists of readers and tags applied to objects. The reader interrogates the tags via a wireless link to obtain the data stored on them. The cheapest RFID tags with the largest commercial potential are passive or semi-passive, and the energy necessary for tag–reader communication is harvested from the reader’s signal. Passive RFID tags are usually based on backscatter modulation, where the antenna reflection properties are changed according to information data [2].
Wireless body area networks (WBANs) are becoming an increasingly important part of the wireless c... more Wireless body area networks (WBANs) are becoming an increasingly important part of the wireless communication system. In such a communication system various electronic devices carried by a person on his body can be connected. In this paper, we investigate the UWB body area propagation channel. The channel characterization is based on UWB on-body channel measurements. This paper describes the measurement campaign and the basic characteristics of the body area propagation channel extracted from measurement data.
The chapter focuses on radio frequency aspects in UWB and is organised into four sections: the fi... more The chapter focuses on radio frequency aspects in UWB and is organised into four sections: the first section briefly summarises the main aspects about regulation issues of UWB technology; the second section describes antenna design and characterisation; the third section discusses UWB channel modelling and measurements; the last section describes localization and radar imagining with UWB technology.
2012 6th European Conference on Antennas and Propagation (EUCAP), 2012
An UWB slot antenna with a floating back plane is presented. The last is intended for antenna des... more An UWB slot antenna with a floating back plane is presented. The last is intended for antenna desensitization from the strong influence of the body proximity in Body Area Network radio links. The effect is demonstrated by comparison with other monopole-like or dipole-like UWB antennas (without any backplane) placed on the body.
This paper deals with the parametric modeling of UWB antenna response. Highly reduced model order... more This paper deals with the parametric modeling of UWB antenna response. Highly reduced model orders based on the singularity expansion method and the spherical modes expansion method are obtained, with extra reduction when antenna symmetries or pseudo symmetries are taken into account.
The chapter describes the activity carried out by COST 2100 on Body Area Networks (BANs) and is o... more The chapter describes the activity carried out by COST 2100 on Body Area Networks (BANs) and is organised into three sections: the first section discusses the applications and requirements; the secon section presents the activity on channel measurements and modelling; finally, the third section addresses the existing transmission technologies and describes the results obtained for PHY, MAC and NET layers; low power design is also addressed.
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005], 2005
ABSTRACT The design and results of a new UWB printed dipole antenna with a dielectric lens are pr... more ABSTRACT The design and results of a new UWB printed dipole antenna with a dielectric lens are presented.
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005], 2005
An UWB planar monopole with dual stripline fed (matched over a 3.2–9.2 GHz bandwidth) is designed... more An UWB planar monopole with dual stripline fed (matched over a 3.2–9.2 GHz bandwidth) is designed for low cost applications with an achieved input bandwidth of [3.2–9.2] GHz and size of (30×31×3 mm). The main drawback of such a fully planar design is the degradation of the omni-directionality beyond the first octave. The addition of simple orthogonal elements onto the monopole offers a very simple way to significantly reduce this effect. The improvements have been evaluated with specific UWB characterization tools.
ABSTRACT The first part of this article addresses the question of the representation of UWB anten... more ABSTRACT The first part of this article addresses the question of the representation of UWB antennas, particularly in the Time Domain, in terms of effectiveness, compactness and versatility. The second part of this work deals with the role of the antenna(s) in the effective radio link performance, taking into account antenna dispersion with respect to radio channel dispersion.
ABSTRACT RFID technology for use in real-time object identification is being rapidly adopted in s... more ABSTRACT RFID technology for use in real-time object identification is being rapidly adopted in several fields such as logistic, automotive, surveillance, automation systems, etc. [1]. A radiofrequency identification (RFID) system consists of readers and tags applied to objects. The reader interrogates the tags via a wireless link to obtain the data stored on them. The cheapest RFID tags with the largest commercial potential are passive or semi-passive, and the energy necessary for tag–reader communication is harvested from the reader’s signal. Passive RFID tags are usually based on backscatter modulation, where the antenna reflection properties are changed according to information data [2].
Wireless body area networks (WBANs) are becoming an increasingly important part of the wireless c... more Wireless body area networks (WBANs) are becoming an increasingly important part of the wireless communication system. In such a communication system various electronic devices carried by a person on his body can be connected. In this paper, we investigate the UWB body area propagation channel. The channel characterization is based on UWB on-body channel measurements. This paper describes the measurement campaign and the basic characteristics of the body area propagation channel extracted from measurement data.
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