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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

A multilayeredly rolled inverted-F antenna for dual-band mobile phones.

January 2008 (has links)
Lam, Fuk Ming. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references. / Abstracts in English and Chinese. / Abstract --- p.I / Acknowledgements --- p.V / Table of Contents --- p.VI / List of Figures --- p.IX / List of Tables --- p.XVI / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Background --- p.1 / Chapter 1.2 --- Overview of the Work --- p.5 / Chapter 1.3 --- Original contribution of this thesis --- p.6 / Chapter 1.4 --- Organization of this thesis --- p.7 / Chapter 1.5 --- Remarks on frequency dependent parameters in this thesis --- p.8 / Reference --- p.9 / Chapter Chapter 2 --- Small Antennas for mobile phone applications --- p.10 / Chapter 2.1 --- Introduction --- p.10 / Chapter 2.2 --- Definitions --- p.11 / Chapter 2.2.1 --- Quality factor --- p.11 / Chapter 2.2.2 --- Efficiency --- p.12 / Chapter 2.2.3 --- Return Loss and impedance bandwidth --- p.12 / Chapter 2.2.4 --- Antenna gain and radiation pattern --- p.13 / Chapter 2.3 --- Fundamental limitations of small antenna --- p.14 / Chapter 2.4 --- Low-profile and Dual-band techniques --- p.16 / Chapter 2.4.1 --- Inverted-L/F and Planar Inverted-F Antenna --- p.16 / Chapter 2.4.2 --- Dual-band PIFA --- p.21 / Chapter 2.4.3 --- Discussion on miniaturization of mobile phone antenna --- p.23 / Chapter 2.5 --- Ground plane effect of mobile phone antenna --- p.26 / Chapter 2.5.1 --- Optimal location to excite antenna over a finite ground plane --- p.26 / Chapter 2.5.2 --- Dependence of resonant frequency and impedance bandwidth on ground plane length --- p.27 / Chapter 2.5.3 --- Dual-resonator model for mobile phone antenna --- p.32 / Chapter 2.6 --- Summary --- p.38 / Reference --- p.38 / Chapter Chapter 3 --- A Multilayeredly Rolled Inverted-F Antenna for Dual-band Mobile Phones --- p.42 / Chapter 3.1 --- Introduction --- p.42 / Chapter 3.2 --- Literature review on rolled antennas --- p.43 / Chapter 3.3 --- Proposed MRIFA --- p.47 / Chapter 3.3.1 --- Antenna configuration --- p.47 / Chapter 3.3.2 --- Simulation studies --- p.51 / Chapter 3.3.3 --- Prototype and Experimental results --- p.59 / Chapter 3.3.4 --- Comparison with a reference PIFA --- p.66 / Chapter 3.4 --- Mobile phone installed with the MRIFA --- p.70 / Chapter 3.5 --- Summary --- p.80 / Reference --- p.81 / Chapter Chapter 4 --- A fast method to evaluate Total Isotropic Sensitivity (TIS) in mobile phone active measurement --- p.82 / Chapter 4.1 --- Introduction --- p.82 / Chapter 4.2 --- Proposed fast method for TIS evaluation --- p.85 / Chapter 4.2.1 --- Observed relationship between total Effective Isotropic Radiated Power (EIRP) and total Effective Isotropic Sensitivity (EIS) --- p.85 / Chapter 4.2.2 --- EIS's estimation from EIRPs for TIS evaluation --- p.89 / Chapter 4.3 --- Summary --- p.92 / Reference --- p.93 / Chapter Chapter 5 --- Conclusion --- p.94 / List of Publications --- p.96 / Appendix A - Details of sample mobile phones investigated in this thesis research --- p.97 / Appendix B - Active measurement of mobile phone's transmit power and receiver sensitivity --- p.107 / Appendix C - MRIFA realization procedure --- p.118
22

Technological Advancements in Communication

Ramnaraine, Jankie 15 December 2009 (has links)
Faculty of Criminology, Justice and Policy Studies
23

Cell phone communication versus face-to-face communication the effect of mode of communication on relationship satisfaction and the difference in quality of communication /

Schwarz, Rebecca M. January 2008 (has links)
Thesis (M.A.)--Kent State University, 2008. / Title from PDF t.p. (viewed Jan. 5, 2010). Advisor: Richard Serpe. Keywords: cell phone, cellular phone, relationship satisfaction, mode of communication, quality of communication, communication technology. Includes bibliographical references (p. 113-115).
24

Usability analysis of instant messaging platforms in a mobile phone environment.

Minnie, Johannes Carel. January 2013 (has links)
M. Tech. Information Networks / The study was undertaken to better understand the vast number of limitations in the use of mobile devices such as screen size, navigation, colour and network limitations. The aim of this study is to identify usability problems within the user interface design of mobile device instant messaging applications. The usability of three mobile instant messaging applications (MXit, Nimbuzz and Whatsapp) will be evaluated on three different high end touch screen smart phones (Apple iPhone 4, BlackBerry Torch 9800 and Nokia N8)
25

Designing for the ageing experience : the case of mobile phones in different life stages

Medeiros, Ana Cristina Barbosa January 2012 (has links)
No description available.
26

Cell phones and cinema filmic representations of mobile phone technology and new agency /

Pustay, Steven J. January 2007 (has links)
Thesis (M.A.)--Ohio University, June, 2007. / Title from PDF t.p. Includes bibliographical references.
27

The effects of simulated cellular phone conversation on road-crossing safety : a thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy at the University of Canterbury /

Murray, Stephen J. January 2006 (has links)
Thesis (Ph. D.)--University of Canterbury, 2006. / Typescript (photocopy). "Funding provided through the Road Safety Trust Doctoral Scholarship." "Primary supervisor: Dr. Zhe Chen, Secondary supervisor: Dr. Dean H. Owen." Includes bibliographical references (leaves 172-199). Also available via the World Wide Web.
28

The efffects of eletromagnetic fields emitted by mobile phones on human sleep and melatonin production

Loughran, Sarah Patricia. January 2007 (has links)
Thesis (PhD) - Swinburne University of Technology, Brain Sciences Institute, 2007. / Doctorate of Philosophy, Brain Sciences Institute, Swinburne University of Technology - 2007. Typescript. "April 2007".
29

Inferring social and internal context using a mobile phone

Phithakkitnukoon, Santi. Dantu, Ram, January 2009 (has links)
Thesis (Ph. D.)--University of North Texas, Dec., 2009. / Title from title page display. Includes bibliographical references.
30

A TEM cell design to study electromagnetic radiation exposure from cellular phones

Boriraksantikul, Nattaphong. January 2008 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2008. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on August 10, 2009) Includes bibliographical references.

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