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Rozprawy doktorskie na temat „Frequency standards”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 1 sierpnia 2024

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1

CAMILHER, DALTON VILELA. "AUTOCALIBRATION OF FREQUENCY STANDARDS USING THE INTERNET." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2000. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=2015@1.

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MARINHA DO BRASIL<br>A calibração de padrões atômicos de tempo e freqüência, na forma atualmente realizada, apresenta o inconveniente de ter que se fazer o transporte do Padrão de Transferência até os laboratórios onde se encontram os padrões a serem calibrados. Isto se dá pelo fato destes laboratórios não possuírem uma maneira adequada para enviarem seus padrões ao Departamento do Serviço da Hora do Observatório Nacional (DSH/ON), órgão responsável perante o INMETRO na calibração em tempo e freqüência e detentor do Padrão Nacional. Propõe- se aqui a substituição do procedimento atual

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2

PIZZOCARO, MARCO. "Realization and characterization of optical frequency standards." Doctoral thesis, Politecnico di Torino, 2013. http://hdl.handle.net/11583/2506152.

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During the Ph.D. Course I worked on the realization and the characterization of an ytterbium optical frequency standard. Since year 2000, it is possible using optical frequency comb to directly and reliably scale a frequency measurement in the optical domain to a measurement in the microwave domain. This possibility allows the realization of high accuracy and high stability optical frequency standards, whose atomic quality factors are several orders of magnitude higher than the best microwave ones. Among others, the alkaline earth atoms are very promising and, once trapped in an optical lattic

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3

Law, Eugene L. "TELEMETRY RF SIGNAL BANDWIDTH; DEFINITIONS AND STANDARDS." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608400.

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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada<br>This paper will present and compare several definitions of telemetry radio frequency (RF) signal bandwidth. Measured spectra for different signals will be presented. The bandwidths of these signals will then be determined and measurement methods will be discussed. This discussion will include the effects of spectrum analyzer resolution bandwidth, video bandwidth and detector type. Finally, a proposed spectral mask will be discussed. This spectral mask can be used to calc

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4

Hella, Mona Mostafa. "CMOS radio frequency power amplifiers for short-range wireless standards /." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486399160107527.

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Smowton, P. M. "The frequency stabilisation of laser diodes for industrial applications." Thesis, Cardiff University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319933.

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6

BREGOLIN, FILIPPO. "Yb-171 optical frequency standards towards the redefinition of the second." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2754714.

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7

Langham, Conway David. "Cryogenic sapphire dielectric resonators as microwave frequency standards : development and performance." Thesis, University of Sussex, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364164.

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8

Smith, J. E. "The effects of rogueing on the frequency of atypical winter wheat plants." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383798.

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9

Grishina, Vera. "Blue laser for precision spectroscopy : toward optical frequency standard referenced to laser cooled calcium atoms." University of Western Australia. School of Physics, 2008. http://theses.library.uwa.edu.au/adt-WU2009.0046.

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Optical frequency standards with the reference to a narrow electronic transition of a laser-cooled collection of neutral atomic particles are becoming essential tools of research in modern precision physics experiments. In the core of a building block of an optical frequency standard is the optical continuous wave laser that has a good spectral purity of the emitted light. Such a stable optical oscillator is highly desirable in high resolution spectroscopy, if it emits in a good quality beam at a short visible wavelength. This Master thesis explores efficient techniques for building such an op

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10

Taylor, Paul. "Observation of an ultra-high Q resonance in a single ion of '1'7'2Yb'+." Thesis, University of London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337596.

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11

Srinivasan, Rangakrishnan. "Design and implementation of a frequency synthesizer for an IEEE 802.15.4/Zigbee transceiver." Texas A&M University, 2003. http://hdl.handle.net/1969.1/5898.

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The frequency synthesizer, which performs the main role of carrier generation for the down-conversion/up-conversion operations, is a key building block in radio transceiver front-ends. The design of a synthesizer for a 2.4 GHz IEEE 802.15.4/Zigbee transceiver forms the core of this work. This thesis provides a step-by-step procedure for the design of a frequency synthesizer in a transceiver environment, from the mapping of standard-specifications to its integrated circuit implementation in a CMOS technology. The results show that careful system level planning leads to high-performance realizat

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12

Dawkins, Samuel T. "Sapphire room temperature optical frequency reference : design, construction and application." University of Western Australia. School of Physics, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0200.

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A pair of high-stability optical frequency references has been developed. The devices are based on room temperature Fabry-Perot cavities with mirrors spaced apart by a hollow single-crystal sapphire element. The sapphire element delivers mechanical sti ness that provides improved immunity to vibrational perturbations compared with the more common spacers made from ultra-low expansion glass. The system is housed in an vacuum chamber designed to provide isolation from environmental perturbations through the use of an active thermal control system, suspension legs and a unique beam alignment syst

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13

Koryl, Margaret Nolan. "The formal evaluation of Indiana school superintendents : frequency, practices, and procedures." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1036818.

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The primary purpose of this study was to examine the practice of formally evaluating Indiana school superintendents and to determine superintendent dispositions toward the process. More specifically, the following issues were analyzed: (a) the extent to which Indiana school superintendents were formally evaluated; (b) the extent to which job descriptions, district policy, or employment contracts were associated with formal evaluations; (c) superintendent opinions regarding criteria, purposes, and methods of evaluation; and (d) the extent to which selected demographic variables were associated

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14

Lamilla, Rubio Erick Abraham 1985. "Transmitindo padrões de frequência atômicos por redes de fibras ópticas=Transmitting atomic frequency standards in optical fiber networks." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/276939.

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Orientadores: Flavio Caldas Da Cruz, Luiz Eduardo Evangelista de Araujo<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin<br>Made available in DSpace on 2018-08-28T03:18:42Z (GMT). No. of bitstreams: 1 LamillaRubio_ErickAbraham_M.pdf: 5773132 bytes, checksum: 33effe596fdd1deb74be96f588fc6150 (MD5) Previous issue date: 2015<br>Resumo: Neste trabalho foi feito um estudo experimental da transmissão de padrões de frequência atómicos através de uma rede de fibra optica. Até onde sabemos este tipo de transmissão foi realizada pela primeira vez no Bras

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15

Trimble, William L. "High-resolution spectroscopy in ¹¹⁵In⁺ and prospects for an indium ion optical frequency reference /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/9661.

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16

Sharma, Abhinav. "ESTIMATING THE EFFECTS OF BLASTING VIBRATIONS ON THE HIGH-WALL STABILITY." UKnowledge, 2017. https://uknowledge.uky.edu/mng_etds/38.

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The stability of the high-walls is one of the major concerns for open pit mines. Among the various factors affecting the stability of high-walls, blast vibrations can be an important one. In general, worldwide the established respective government regulations and industry standards are used as guidance to determine the maximum recommended levels of the peak particle velocity and frequency from the blast to avoid any effects on the structures around the mining project. However, most of the regulations are meant for buildings or houses and do not concern high-walls. This thesis investigates the

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17

Kalogrias, Christos. "Performance analysis of the IEEE 802.11A WLAN standard optimum and sub-optimum receiver in frequency-selective, slowly fading Nakagami channels with AWGN and pulsed noise jamming." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Mar%5FKalogrias.pdf.

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Thesis (M.S. in Electrical Engineering and M.S. in Systems Engineering)--Naval Postgraduate School, March 2004.<br>Thesis advisor(s): Clark Robertson. Includes bibliographical references (p. 143). Also available online.

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18

Junior, Jair De Martin. "Sistema de laser de diodo de cavidade estendida para padrões de frequência." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-29052014-144230/.

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Este trabalho tem como objetivo principal desenvolver uma nova fonte de laser de diodo compacta e robusta, além de um novo drive de controle para serem utilizados em padrões primário de tempo e frequência tipo chafariz de átomo de Césio e padrões compacto baseados em átomos frios. Um dos requisitos para utilização de laser de diodo em padrões primários de tempo e frequência é sua estabilidade em frequência e baixíssimo ruído espectral. Além disto, dada à aplicação embarcada, o laser deve ser extremamente robusto com relação às condições adversas: mecânicas, térmicas e elétricas. Tanto a parte

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19

Silander, Isak. "Cavity enhanced optical sensing." Doctoral thesis, Umeå universitet, Institutionen för fysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-110278.

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An optical cavity comprises a set of mirrors between which light can be reflected a number of times. The selectivity and stability of optical cavities make them extremely useful as frequency references or discriminators. With light coupled into the cavity, a sample placed inside a cavity will experience a significantly increased interaction length. Hence, they can be used also as amplifiers for sensing purposes. In the field of laser spectroscopy, some of the most sensitive techniques are therefore built upon optical cavities. In this work optical cavities are used to measure properties of g

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20

Ahn, Hong Jo. "A frequency synthesizer for multi-standard wireless applications." Columbus, OH : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1054488431.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xix, 148 p.: ill. Includes abstract and vita. Advisor: Mohammed Ismail. Includes bibliographical references (p. 144-148).

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21

Podolan, Luděk. "Jednoúčelový stroj zajišťující lisování kanystrových nálevek." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221101.

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The aim of this diploma thesis is detail description of theory, design process and final realization of single-purpose machine for pressing canister funnels. Theoretical section of this work covers manufacturing standards of the electrical cabinets, options for the single-purpose machine control with focus on the programmable logic controller e.g. PLC, PLC control program concept with definition of the main alarm states and description of two types of electrical cabinet. Practical part contains description of the electrical cabinet, its block diagram, photo documentation of the wiring (chapter

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22

MILANI, GIANMARIA. "Realization of advanced 171Yb optical lattice frequency standard." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2706635.

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Atomic clocks constitute a fundamental tool for time and frequency metrology and their application is widespread in many technological fields. In particular, the International System of units (SI) defines the second on a microwave transition of Caesium atoms. The realization is made by clocks reaching uncertainties of few parts in 10^−16, making the second to be the quantity realized with the smallest uncertainty in the SI. However, a new generation of atomic clocks, called optical clocks, have already demonstrated to surpass Caesium standards both in accuracy and stability. The resear

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23

Don, Wickramage Chathurika Pavithrani Kumari. "Information accountability in health information systems using process analytics." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/205044/1/Chathurika_Don%20Wickramage_Thesis.pdf.

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The thesis presents ways of automatically detecting healthcare policy violations in Health Information Systems (HISs), as one part of an overall Information Accountability Framework, intended to hold system users answerable for their information use. The significance of this research is the demonstration of an auditing approach that includes healthcare log enrichment and methods of modelling healthcare policies and standards that can be used for checking policy compliance in the healthcare industry. It also paves the way for how process analytics can be used to hold people accountable for thei

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24

Eken, Yalcin Alper. "High frequency voltage controlled ring oscillators in standard CMOS." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/8064.

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25

Luo, Changling 1980. "Fluctuating wind power penetration as limited by frequency standard." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=83873.

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Fluctuating wind power is due to wind turbulence and is the part which should be filtered out leaving behind the more predictable mean wind power which can be traded in the hourly energy market. The power fluctuations cause the frequency of electric utility to deviate from the 60Hz standard. This thesis is concerned with estimating the maximum fluctuating wind power before the 1% deviation from the 60 Hz standard (required by some utilities) is exceeded. To keep the thesis manageable, the scope is narrowed to thermal power plants with governor speed control but no Automatic Governor Con

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26

Tang, Yiwu. "Adaptive phase locked loop in multi-standard frequency synthesizers /." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486401895208464.

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27

Eken, Yalçin Alper. "High frequency voltage controlled ring oscillators in standard CMOS." Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-06072004-131133/unrestricted/eken%5Fyalcin%5Fa%5F200405%5Fphd.pdf.

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28

Homklintian, Monthol [Verfasser], and Meinhard [Akademischer Betreuer] Schilling. "Frequency Dependence of Primary Capacitance Standard in Audio Frequency Range / Monthol Homklintian ; Betreuer: Meinhard Schilling." Braunschweig : Technische Universität Braunschweig, 2012. http://d-nb.info/1175823945/34.

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Cirineo, Tony, and Bob Troublefield. "STANDARD INTEROPERABLE DATALINK SYSTEM, ENGINEERING DEVELOPMENT MODEL." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608398.

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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada<br>This paper describes an Engineering Development Model (EDM) for the Standard Interoperable Datalink System (SIDS). This EDM represents an attempt to design and build a programmable system that can be used to test and evaluate various aspects of a modern digital datalink. First, an investigation was started of commercial wireless components and standards that could be used to construct the SIDS datalink. This investigation lead to the construction of an engineering develop

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30

Gantenbein, Terry K. "Implementation of Multi-Frequency Modulation on an industry standard computer." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/27088.

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Approved for public release; distribution is unlimited<br>This report discusses the theory, design, implementation and testing of a personal computer-based Multi-Frequency Modulation (MFM) packet communications system. Transmitter/receiver programs provide software drivers for D/A and A/D boards and perform symbol encoding, modulating, demodulating and decoding. The design and construction of a polarity coincidence correlator for receiver packet synchronization is presented. Experimental results show that the implemented MFM communication system conforms to theoretical analysis with accepta

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31

Tibbo, Maria S. "Optimization of a RF Single Ion Paul Trap for a 88Sr+ Ion Optical Clock Comparison." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/26254.

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As part of the ongoing world-wide effort in improving time and frequency references, a high accuracy optical frequency standard was developed using the electric quadrupole allowed clock transition at 445 THz (674 nm) in a trapped and laser cooled 88Sr+ion. An ion trap system of the endcap design has been recently evaluated with a fractional frequency uncertainty which surpasses the accuracy of the current realization of the SI second. This thesis seeks to further evaluate the limiting systematic shifts of the device by optimizing a second ion trap reference based on a rf Paul trap design, whi

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32

Kim, Hyungwook. "CMOS radio-frequency power amplifiers for multi-standard wireless communications." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44786.

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The development of multi-standard wireless communication systems with low cost and high integration is continuously requested and accompanied by the explosive growth of the wireless communication market. Although CMOS technology can provide most building blocks in RF transceivers, the implementation of CMOS RF power amplifiers is still a challenging task. The objective of this research is to develop design techniques to implement fully-integrated multi-mode power amplifiers using CMOS technology. In this dissertation, a load modulation technique with tunable matching networks and a pre-distor

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33

Singh, Rahul. "Design Techniques for Frequency Reconfigurability in Multi-Standard RF Transceivers." Research Showcase @ CMU, 2018. http://repository.cmu.edu/dissertations/1185.

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Compared to current single-standard radio solutions, multi-standard radio transceivers enable higher integration, backward compatibility and save power, area and cost. The primary bottleneck in their realization is the development of high-performance frequency-reconfigurable RF circuits. To that end, this research introduces several CMOS-integrated, transformer-based reconfigurable circuit techniques whose effectiveness is validated through measurements of designed transceiver front-end low-noise (LNA) and power amplifier (PA) prototypes. In the first part, the use of high figure-of-merit phas

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34

Cha, Jeongwon. "A CMOS radio-frequency front-end for multi-standard wireless communications." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37250.

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The explosive growth of wireless communication market has led the development of low-cost, highly-integrated wireless communication systems. Even though most blocks in the front-end have successfully been integrated by using the CMOS technology, it is still a formidable challenge to integrate the entire front-end. Thus, the objective of this research is to demonstrate the feasibility of the integrated front-end by using improved circuit techniques as well as the improved process technologies. This dissertation proposes an improved control scheme to enhance the high-power handling capability of

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35

Stein, Björn [Verfasser]. "Contributions to a Yb+ single-ion optical frequency standard / Björn Stein." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover, 2010. http://d-nb.info/1005408955/34.

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RAYMUNDO, ELIZABETH VILCANAUPA. "DEVELOPMENT OF A METROLOGICAL STANDARD LASER FREQUENCY REFERENCE AT 532 NM." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=15143@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>FUNDAÇÃO DE APOIO À PESQUISA DO ESTADO DO RIO DE JANEIRO<br>Este trabalho faz parte do projeto do desenvolvimento do primeiro padrão de referência metrológica de frequência em torno de 532 nm no Brasil, para a realização prática da definição do metro. A pesquisa foi desenvolvida no Laboratório de Interferometria (Laint) da Divisão de Metrologia Óptica do Inmetro, em convenio com o Programa de Pós-Graduação em Metrologia para Qualidade Industrial da PUC-Rio. No âmbito deste projeto, a realização de uma nova referência em comprimen

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Kim, Hyung Joon. "Multi-standard radio transceiver architectures and radio frequency front-end design." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1110399471.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xv, 128 p.; also includes graphics (some col.). Includes bibliographical references (p. 125-128). Available online via OhioLINK's ETD Center

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SECCO, MARCELLO. "Desenvolvimento de dispositivo movimentador automatizado de amostras com vista à aplicação em medidas de radioisótopos que possuem curto tempo de meia-vida." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26619.

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Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2016-08-26T12:45:07Z No. of bitstreams: 0<br>Made available in DSpace on 2016-08-26T12:45:07Z (GMT). No. of bitstreams: 0<br>Medidas de espectroscopia gama de alta resolução têm diversas aplicações. Aplicações envolvendo medidas de radioisótopos de meia-vida curta podem apresentar problemas de baixa precisão nas contagens quando a fonte radioativa está distante do detector e de perda de acurácia por efeitos de tempo morto e empilhamento de pulsos em situação de altas taxas de contagens. Um modo de minimizar esses problemas é a

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Chen, Xinhua. "Design of a highly-integrated frequency synthesizer for multi-standard mobile communications /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17292.

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Girkin, J. M. "Development of a tellurium frequency standard for laser spectroscopy of atomic hydrogen." Thesis, University of Southampton, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382167.

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Johnson, Steven. "Narrow linewidth lasers for use with neutral strontium as a frequency standard." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4576/.

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The continual development of precise timing has always pushed technology forward, and the latest generation of clocks uses electronic transitions within cooled atoms as their frequency reference. For atoms where the clock transition is at an optical frequency an ultra stable laser is used to probe the transition; the construction and development of this laser for use with strontium is the subject of this thesis. The system consists of a laser, an optical cavity and the electronics to lock the laser to the optical cavity. The theoretical component of this thesis looked into the possible materia

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42

Garkusha, Sergey. "Analysis the Results of Frequency Planning in Mesh Networking Standard IEEE 802.11." Thesis, Modern Problems of Radio Engineering, Telecommunications and Computer Science. Proceedings of the international Conference TCSET’2012, 2012. http://dspace.uccu.org.ua/handle/123456789/870.

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The paper analyzes the influence of stations territorial separation and technological characteristics of multiradio multichannel mesh networking upon the quality of of the allocation of channels problem solution

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Hill, Ian Robert. "Development of an apparatus for a strontium optical lattice optical frequency standard." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9822.

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Accurate time keeping is critical to the function and advancement of many human endeavours. Atomic clocks based on a microwave transition in atomic Cs have served as primary frequency standards to realise the SI second since their formal adoption in 1967. State-of-the-art, laser cooled, Cs fountains now routinely operate with fractional frequency uncertainties below the 10⁻¹⁵ level in laboratories throughout the world. Over the last decade, efforts to build frequency standards based on optical transitions have come to fruition and potential inaccuracies below the 10⁻¹⁷ level have been demonstr

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Abd, Halim Hasliza. "Restricted Verb Phrase Collocations in Standard and Learner Malaysian English." Thesis, University of Canterbury. Linguistics, 2014. http://hdl.handle.net/10092/10362.

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The English used in Malaysia is one of the varieties of New Englishes and this variety has emerged due to the spread of English around the world (Platt, et al., 1983; Pillai, 2006). In the case of Malaysia, Malay is the national language and standard English exists to be the language of an elite (Bao, 2006), also as a language of interaction. Over years of playing its various roles as a language of interaction, there has emerged a variety of English that is distinctively Malaysian (Asmah, 1992). Baskaran (2002) points out that English is now adopted and adapted in the linguistic ecology of Mal

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Papageorgiou, Nikolaos A. "Development of RF front end prototype compliant with the 802.11a standard for wireless applications." Diss., Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04072004-180131/unrestricted/papageorgiou%5Fnikolaos%5Fa%5F200312%5Fms.pdf.

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46

Huang, Wenxiang. "A broadband RF CMOS frond-end for multi-standard wireless communication." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1170882877.

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47

Kao, Chi-Han. "Performance of IEEE 802.11a wireless LAN standard over frequency-selective, slow, ricean fading channels." Thesis, Monterey California. Naval Postgraduate School, 2002. http://hdl.handle.net/10945/5020.

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Approved for public release, distribution is unlimited<br>With the rapidly growing demand for more reliable and higher data rate wireless communications, the Institute of the Electrical and Electronics Engineers (IEEE) 802.11 working group approved a standard for 5 GHz band, wireless local area networks (WLAN) in 1999. This standard, IEEE 802.11a, supports data rates from 6 up to 54 Mbps, and uses orthogonal frequency division multiplexing (OFDM) for transmission in indoor wireless environments. This thesis examines the performance of the IEEE 802.11a standard for different combinations of sub

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Kao, Chi-han. "Performance of IEEE 802.11a wireless LAN standard over frequency-selective, slow, ricean fading channels /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02sep%5FKao.pdf.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, September 2002.<br>Thesis advisor(s): R. Clark Robertson, Roberto Cristi. Includes bibliographical references (p. 93-94). Also available online.

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Muhammad, Wasim. "CMOS LNA Design for Multi-Standard Applications." Thesis, Linköping University, Department of Electrical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7841.

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<p>This thesis discusses design of narrowband low noise amplifiers for multi¬standard applications. The target of this work is to design a low noise ampli¬fier(LNA) for DCS1800 and Bluetooth standard frequency bands. Various designs for narrowband multi-standard LNAs have been studied and a new design for tunable multi-standard LNA has been presented and designed using accumulation mode MOS varactors.</p><p>As this design includes on-chip spiral inductors, the design, modelling and layout of on-chip inductors have been discussed briefly. The tool used for this purpose is ASITIC.</p><p>Also ESD

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Sastrawan, Wayan Jarrah Scheeres. "Novel precision control techniques in a trapped Yb+ ion implementation." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/13534.

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Precise control of quantum systems is vital to scientific and technological progress, including the realisation of quantum computation and simulation, record-breaking timekeeping and positioning applications. Control of quantum systems is hampered by the effects of random environmental or hardware noise, which leads to unknown deviations from the system's desired evolution. This thesis presents a set of interaction-focussed methods for improving precision control, tailored to the problems of quantum error suppression and stabilisation of oscillators, which share a common basic structure. These

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