Zobrazeno 1 - 10
of 52
pro vyhledávání: '"621.3824"'
Autor:
Sklikas, Pavlos
Radio over Fibre (RoF) Distributed Antenna Systems can be deployed in combination with pre-4G and 4G technologies, proposed by the IEEE 802.16 and 3GPP LTE standards, in order to support the increased demand for capacity and coverage for various outd
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.595828
Autor:
Bai, Qiang
The idea of using textile materials for wearable antenna design has attracted much attention in the industry and academia because it is lightweight, flexible, and most importantly the textile antenna can be seamlessly integrated into garments. Howeve
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.575081
Autor:
Wu, Jun
Spiral antennas have a wide range of applications in communications because they are circularly polarized with broadband characteristics with respect to both input impedance and radiation pattern. However, a spiral antenna that is conformal to a mult
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555241
Autor:
Taylor, P. S.
The research carried out and detailed in this thesis presents several techniques applied to frequency selective surfaces (FSS) with an emphasis on propagation control in the built environment. Issues are explored such as interference reduction and fr
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.590061
Autor:
Lu, Yang
Ultra-wideband (UWB) technology is a promising solution to provide high data-rate transmission of the future wireless communication systems. The rapid development of UWB wireless communication systems has brought both challenges and: opportunities to
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.569654
Autor:
Michailidis, Evangelos
Multiple Input Multiple Output wireless communications systems require as the name implies multiple antennas at the transmit and receive side of a link, as all multiple elements operationally occupy the same spectrum, the capacity of carrying informa
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556016
Autor:
Zaggoulos, George
The increased demand for mobile broadband communications has led to the development of broadband wireless standards such as UMTS, W-CDMA and HSPA. Even though these technologies have been deployed in most of the developed parts of the world, they hav
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504232
Autor:
Sittakul, Vitawat
The thesis introduces the concept of the Photonic Active Integrated Antenna (PhAIA) where optical devices are integrated with planar antennas to produce very compact, low cost modules. PhAIAs are applied to the Radio-over-Fibre application area which
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504230
The performance of ultra wideband (UWB) signals in wireless communication systems depends, primarily, on the knowledge of the propagation channel, interfering signals and the proximity between transmit and receive antennas. This work focuses on the s
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.503865
Autor:
Lu, Di
Theoretical research show that wireless communication systems using multiple-input multiple-output (MIMO) antennas can provide a very high spectral efficiency in rich scattering environments. This thesis investigates issues of antenna selection in MI
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493529