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Thematische Bibliographien / Radio frequency signal transmission / Dissertationen

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Dissertationen zum Thema „Radio frequency signal transmission“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

Chen, Cheng. "Simultaneous transmission of baseband signal and in band RF signal." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708805.

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2

Cui, Xian. "Efficient radio frequency power amplifiers for wireless communications." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1195652135.

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3

Barč, Andrej. "Přenos radiofrekvenčního signálu optickým vláknem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442409.

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This work deals with the transmission of optical radiation modulated by a radio frequency signal through an optical fiber. Furthermore, it describes the principles of communication and area coverage. It points out the practical use of components located in the communication chain of this system. Explains the functionality of the properties and the division of individual components. It introduces the benefits and limitations of this system. It further describes the creation of a topology suitable for laboratory measurement of RoF technology. Provides experimental measurement of C-band parameter

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4

Zhao, Chunming. "Distortion-based crest factor reduction algorithms in multi-carrier transmission systems." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26525.

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Thesis (Ph.D)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Zhou, G. Tong; Committee Member: Kenney, J. Stevenson; Committee Member: Li, Ye (Geoffrey); Committee Member: Ma, Xiaoli; Committee Member: Yuan, Ming. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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5

Ameziane, El Hassani Chama. "Contribution à la réalisation d’un oscillateur push-push 80GHz synchronisé par un signal subharmonique pour des applications radars anticollisions." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14025/document.

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Ce travail de thèse s’inscrit dans le cadre d’un projet Français « VéLo » qui est une collaboration entre l’industriel STMicroelectronics et plusieurs laboratoires dont les laboratoires IMS-bordeaux et LAAS. Le but du projet est de concevoir un prototype de radar anticollision millimétrique. Dans ce travail un synthétiseur de fréquence est implémenté. Ce dernier sera intégré dans la chaine de réception du démonstrateur. Une étude bibliographique des architectures classiques de système de radiocommunication a été réalisée. Des exemples d’architectures rencontrées dans le domaine millimétrique o

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6

Matarrese, Vincent D. "Tapered radio frequency transmission lines." PDXScholar, 1992. https://pdxscholar.library.pdx.edu/open_access_etds/4329.

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A transformation used to obtain solutions for the beam parameter equation of fiber optics is applied to the second order differential equation for nonuniform transmission lines. Methods are developed for deriving possible transmission line tapers from known solutions of the transformed equation. This study begins with a comprehensive overview of previous work done to obtain closed-form solutions for the transmission line equations. Limitations of the lumped parameter model are also discussed. As part of this thesis, a tapered transmission line is constructed, based on one of the solutions obta

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7

Barton, Taylor Wallis. "Phase manipulation for efficient radio frequency transmission." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78474.

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Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 109-112).<br>Power amplifiers (PAs) for microwave communications are generally the most power-hungry element of a transmitter. High linearity is required for modern digital communications standards, and often is achieved at the expense of efficiency. Outphasing architectures, which combine multiple nonlinear but efficient switching PAs into a system with an overall linear response, represent a pro

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8

Mazal, Mohammed Jellop. "Optically scanned radio frequency field imaging." Thesis, King's College London (University of London), 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266654.

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9

Aubert, Louis-Marie. "Mise en place d'une couche physique pour les futurs systèmes de radiocommunications hauts débits UWB." Phd thesis, Rennes, INSA, 2005. https://tel.archives-ouvertes.fr/tel-00011745.

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L'UWB (Ultra Wide Band) consiste à transmettre des signaux entre 3. 1 et 10. 6 GHz avec une puissance limitée à -41. 3 dBm/MHz. Pour les communications hauts débits (100 à 500 Mbit/s) et courtes portées (1 à 10 m), les solutions de l'état de l'art reposent sur des traitements numériques complexes. Mitsubishi ITE propose une solution alternative multi-bandes (MB) impulsionnelle basée sur un récepteur non-cohérent. La démodulation OOK est effectuée par une détection d'énergie originale avec un seuillage adapté dynamiquement suivant les conditions de propagation. La parallélisation complète de ce

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10

Jereb, Alexander Robert. "Design and implementation of a Radio-Frequency detection algorithm for use within A Radio-Frequency System on Chip." University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1608145466947488.

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11

Nader, Charles. "Enhancing Radio Frequency System Performance by Digital Signal Processing." Licentiate thesis, University of Gävle, Department of Electronics, Mathematics and Natural Sciences, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-7312.

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<p>In this thesis measurement systems for the purpose of characterization of radio frequency power amplifiers are studied. Methods to increase the speed, accuracy, bandwidth, as well as to reduce the sampling requirements and testing cost are presented. A method intended for signal shaping with respect to peak to-average ratio reduction and its effects-improvements on the radio frequency front-end performance is investigated.</p><p>A time domain measurement system intended for fast and accurate measurements and characterization of radio frequency power amplifiers is discussed. An automated, fa

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12

Kloos, Gerold. "Radio-Frequency Signal Strength Based Localisation in Unstructured Outdoor Environments." Faculty of Engineering and Information Technologies, 2008. http://hdl.handle.net/2123/2242.

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Doctor of Philosophy (PhD)<br>This thesis addresses the issues arising in range-only localisation and tracking using Radio Frequency Received Signal Strength Indicator measurements. One of the key issues in Radio Frequency (RF) based localisation and tracking applications is to obtain an accurate sensor representation. Such a sensor model is one of the prerequisites to achieve high accuracy and precision in the localisation and tracking task. The sensor models used at present for this task are very simplistic, and as a consequence are unable to achieve highly accurate and precise localisation.

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13

Kloos, Gerold. "Radio-Frequency Signal Strength Based Localisation in Unstructured Outdoor Environments." Thesis, The University of Sydney, 2007. http://hdl.handle.net/2123/2242.

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This thesis addresses the issues arising in range-only localisation and tracking using Radio Frequency Received Signal Strength Indicator measurements. One of the key issues in Radio Frequency (RF) based localisation and tracking applications is to obtain an accurate sensor representation. Such a sensor model is one of the prerequisites to achieve high accuracy and precision in the localisation and tracking task. The sensor models used at present for this task are very simplistic, and as a consequence are unable to achieve highly accurate and precise localisation. While such an accurate sensor

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14

Johnstone, G. G. "An investigation into filters utilising coupled transmission lines." Thesis, University of Surrey, 1995. http://epubs.surrey.ac.uk/844257/.

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This thesis addresses itself to the solution of a number of problems which arise in the development of Radio Frequency filters, particularly those involving coupled transmission lines as resonant elements. The text is divided into a number of sections dealing with individual topics. After a brief description of Darlington filter design principles, there is an account of the pivotal role of quarter wave sections and their vital part in the realisation of high frequency filters. This is followed by the development of new material relating to equivalent circuits of physical lines in terms of quar

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Griffin, Joshua David. "A Radio Assay for the Study of Radio Frequency Tag Antenna Performance." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7112.

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In recent years, passive radio frequency (RF) tags that communicate using modulated backscatter radiation have shown great potential for use in inventory management, parcel and postal tracking, for use as remote sensors, and in a host of other Radio Frequency Identification (RFID) applications. However, for the widespread use of these tags to become reality, much basic research is needed to reduce the cost, increase the range, and increase the reliability of the RF tag. This research seeks to enhance the performance of passive RF tags by developing a series of tests, or radio assay, to measu

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16

Apostolou, Nikolaos. "Signal synthesis with dynamically-changed power spectral density in a software defined radio transmitter." Thesis, Monterey, California. Naval Postgraduate School, 2003. http://hdl.handle.net/10945/874.

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Approved for public release; distribution is unlimited<br>The objective of this thesis is to synthesize signals with a dynamically change power spectral density, in a SDR transmitter, utilizing the most appropriate channels, modulation schemes and transmission rates for communication, based on the noise profile (AWGN plus interferences) of the link, in order to achieve performance within some predefined acceptable levels. The objective is obtained by simulation.<br>Major, Hellenic Army

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17

Assimakopoulos, Philippos. "Nonlinear effects in OFDM signal transmission over radio over fibre links." Thesis, University of Kent, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.633700.

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The dynamic range limitations that arise from nonlinearity in low-cost and low complexity directly modulated radio over fibre (RoF) links are examined. Statistical non linear models are presented and applied to the case of a RoF link with a low biased laser diode. The effects of distortion on the Error Vector Magnitude (EVM) performance of Orthogonal Frequency-Division Multiplexing (OFDM) signals with different numbers of subcarriers and the connection to the Peak-ta-Average Power Ratio (PAPR) of the signals are investigated. Statistical distributions of the EVM over a large number of transmit

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18

Björsell, Niclas. "Modeling Analog to Digital Converters at Radio Frequency." Doctoral thesis, KTH, Signalbehandling, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4523.

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Det här arbetet handlar om att ta fram beteendemodeller av analog till digital omvandlare avsedda för tillämpningar i radiofrekvensområdet. Det gäller tillämpningar inom telekommunikation men även in test- och mätinstrument där omvandlingen från analoga till digitala signaler ofta är en prestandamässig flaskhals. Modellerna är avsedda att användas för att efterbehandla utdata från omvandlaren och på så sätt förbättra prestanda på den digitala signalen. Genom att skapa modeller av verkliga omvandlare och hur dessa avviker från ett idealt beteende kan ofullständigheter korrigeras genom så kallad

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Krasňanský, Milan. "Radar Signal Processing for Radio Altimeter." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2017. http://www.nusl.cz/ntk/nusl-363816.

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Táto diplomová práca sa zaoberá návrhom a implementáciou algoritmu pre spracovaniu signálu z radaru využívajúceho frekvenčne modulovanú kontinuálnu vlnu. Cieľom je implementácia algoritmu, ktorý by bol dostatočne rýchly (výpočet v reálnom čase na cieľovej platforme) a dostatočne presný pre použitie v rádiovýškomere v ľahkom lietadle so zameraním na použitie počas pristávacieho manévru. Hlavnou metódou spracovania signálu, použitou v implementácii, je Diskrétna Fourierova transformácia. Vytvorený algoritmus bol otestovaný na reálnych letových dátach a pre pristávací manéver dosiahol uspokojivé

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20

Nguyen, Anh Tuan. "Microwave photonic signal processing utilising recirculating delay line structure." Thesis, The University of Sydney, 2014. http://hdl.handle.net/2123/11736.

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Microwave photonic signal processing, using photonic approaches to condition microwave and radio frequency signals, is attractive due to the inherent advantages of high time-bandwidth product, immunity to electromagnetic interference, and its capability to realise dynamic tuning over multi-GHz bandwidths. Additionally, since in-fibre signal processors are inherently compatible with fibre optic microwave systems, they can provide connectivity with in-built signal conditioning. These new techniques transcend the limitations of existing electronic methods, and enable new structures to be realised

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21

Wilson, Derek Edwin. "A Pilot Survey for Astronomical Low Frequency Radio Transients." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/34715.

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Dispersed low-frequency radio astronomical pulses may result from exploding primordial black holes, gamma ray bursts, supernovae, or mergers of exotic objects, but have not yet been detected. Detection would be of great scientific significance because such events must involve extreme physics. The transient nature of these events makes detection unlikely with traditional instruments due to lack of sensitivity to single pulses and narrow field of view. For this thesis, a low-frequency wide-bandwidth astronomical search instrument has been developed as an alternative approach. This instrument con

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22

Hickish, Jack. "Digital signal processing methods for large-N, low-frequency radio telescopes." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:7d983fb3-9411-4906-92cd-70e2c1040b54.

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Current attempts to make precision measurements of the HI power spectrum at high redshifts have led to the construction of several low-frequency, large-N, interferometric arrays. The computational demands of digital correlators required by these arrays present a significant challenge. These demands stem from the treatment of radio telescopes as collections of two-element interferometers, which results in the need to multiply O(N<sup>2</sup>) pairs of antenna signals in an N-element array. Given the unparalleled flexibility offered by modern digital processing systems, it is apt to consider whe

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23

Whiting, Samuel. "Radio-Frequency Transmitter Geolocation Using Non-Ideal Received Signal Strength Indicators." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7038.

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Locating a radio transmitter is important in a number of problems such as finding radio tags, people with radios, and devices that are collecting information in an unauthorized manner. Locating a radio transmitter is inherently difficult because the radio waves of concern are not in the visible spectrum, they reflect and distort easily, and they propagate at the speed of light. A number of methods for locating transmitters are currently used, the majority of which require expensive hardware and extensive processing. This thesis presents a method of using simpler measurements to produce similar

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Wong, K.-H. H. "Transmission of channel coded speech and data over mobile radio channels." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235340.

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25

Shahri, Javad Yazdani Kohneh. "High frequency digital power line transmission for terrestrial and marine networks." Thesis, Lancaster University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288950.

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26

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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Nader, Charles. "Signal Shaping and Sampling-based Measurement Techniques for Improved Radio Frequency Systems." Doctoral thesis, KTH, Signalbehandling, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-95404.

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Wireless communication systems are omnipresent in our day-to-day life, with high expectations regarding capacity, reliability and power efficiency. In order to satisfy the capacity and reliability expectations, today's wireless systems are adopting sophisticated modulation schemes, such as orthogonal frequency division multiplexing (OFDM), which shape today's wireless signals with large bandwidths and high crest factors. On top of that, it is anticipated that different wireless systems/standards will co-exist and share the same radio frequency (RF) front-end in order to reduce the network impl

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Maidana, Renan Guedes. "Outdoor localization system for mobile robots based on radio-frequency signal strength." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2018. http://tede2.pucrs.br/tede2/handle/tede/8140.

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Submitted by PPG Ci?ncia da Computa??o (ppgcc@pucrs.br) on 2018-06-07T11:44:28Z No. of bitstreams: 1 RENAN_GUEDES_MAIDANA_DIS.pdf: 4462325 bytes, checksum: 589fff5df748f66fa3f6b644cbc058db (MD5)<br>Approved for entry into archive by Sheila Dias (sheila.dias@pucrs.br) on 2018-06-15T14:20:14Z (GMT) No. of bitstreams: 1 RENAN_GUEDES_MAIDANA_DIS.pdf: 4462325 bytes, checksum: 589fff5df748f66fa3f6b644cbc058db (MD5)<br>Made available in DSpace on 2018-06-15T14:58:29Z (GMT). No. of bitstreams: 1 RENAN_GUEDES_MAIDANA_DIS.pdf: 4462325 bytes, checksum: 589fff5df748f66fa3f6b644cbc058db (MD5) Previous is

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Lintz, William A. "Radio frequency signal reception via distributed wirelessly networked sensors under random motion." Monterey, Calif. : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/dissert/2009/Sep/09Sep%5FLintz%5FPhD.pdf.

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Dissertation (Ph.D. in Electrical Engineering)--Naval Postgraduate School, September 2009.<br>Dissertation supervisor: McEachen, John ; Tummala, Murali. "September 2009." Description based on title screen as viewed on November 5, 2009. Author(s) subject terms: Sensor Networks, Beamforming, Random Motion, Orientation Includes bibliographical references (p. 197-203). Also available in print.

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O'Brien, Kathleen. "Inductively coupled radio frequency power transmission system for wireless systems and devices /." Aachen : Shaker, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=015959229&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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31

Bland, Denise. "Alias-free signal processing of nonuniformly sampled signals." Thesis, University of Westminster, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322992.

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32

Abdullah, S. N. "Data transmission at 9600 bit/sec over an HF radio link." Thesis, Loughborough University, 1986. https://dspace.lboro.ac.uk/2134/7432.

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The thesis is concerned with serial data transmission at 9600 bit/sec over a voiceband channel, where the main impairments are additive noise and intersymbol interference, and the latter varles slowly with time. The thesis includes a brief description of the ionospheric propagation medium and presents an equivalent baseband model of the HF channel, suitable for computer simulation of quadrature amplitude modulation (QAM) systems. A study of 16-point QAM signals transmitted over voiceband HF channels is then carr-iod out usj-ng the given channel model. Several cost effective near-maximum-likeli

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Moustakidis, Iordanis Vlasios. "Detection of erosion/deposition depth using a low frequency passive radio frequency identification (rfid) technology." Thesis, University of Iowa, 2012. https://ir.uiowa.edu/etd/1490.

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This thesis presents an experimental study both in the laboratory and field to develop and test a method for continuously measuring and monitoring scour using an automated identification technology known as Radio Frequency Identification (RFID). RFID systems consist of three main components, namely (a) the reader which controls the system, (b) the transponder (derived from transmitter/responder) that transmits data to the reader and (c) the excitation antenna that allows the communication between the reader and the transponder. The study provides an insight into the RFID technology and develop

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DeLong, Brock J. "Integration of Radio Frequency Harvesting with Low Power Sensors." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu152408949118599.

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Chu, Xiaoli. "Ultra-wideband direct-sequence impulse radio wireless communications /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202005%20CHU.

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Foster, Griffin. "Large-N correlator systems for low frequency radio astronomy." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:2bca41ff-ec75-4a41-a634-c5bbbceae434.

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Low frequency radio astronomy has entered a second golden age driven by the development of a new class of large-N interferometric arrays. The low frequency array (LOFAR) and a number of redshifted HI Epoch of Reionization (EoR) arrays are currently undergoing commission and regularly observing. Future arrays of unprecedented sensitivity and resolutions at low frequencies, such as the square kilometer array (SKA) and the hydrogen epoch of reionization array (HERA), are in development. The combination of advancements in specialized field programmable gate array (FPGA) hardware for signal process

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Koike, Toshiaki. "Space-time-frequency signal processing for spectrum-efficient multiple-antenna wireless transmission systems." 京都大学 (Kyoto University), 2005. http://hdl.handle.net/2433/144509.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(情報学)<br>甲第11908号<br>情博第180号<br>新制||情||40(附属図書館)<br>23688<br>UT51-2005-N742<br>京都大学大学院情報学研究科通信情報システム専攻<br>(主査)教授吉田進, 教授酒井英昭, 教授佐藤亨<br>学位規則第4条第1項該当

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Sinha, Amit Kumar. "An investigation of Marconi's first transatlantic experiment in Newfoundland to find the correct frequency of transmission (Guglielmo Marconi)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0031/MQ47478.pdf.

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Gendron, Paul John. "A comparison of digital beacon receiver frequency estimators." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09292009-020307/.

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40

Nilsson, Anders. "Offset-PLL based frequency up-conversion for low spurious transmission." Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1838.

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<p>The goal of this final year project is to investigate various techniques to up-convert a baseband signal into radio frequency signals, and to investigate the practical problems encountered in an offset phase locked loop design by implementation. </p><p>Phase locked loops are commonly used in radio transmitters and receivers to generate accurate RF signals from a low-frequency reference. This thesis will highlight some of the problems and strengths of various up-conversion schemes, and suggest an offset-PLL architecture free from many of those problems. </p><p>An offset-PLL is often used in

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Fioravanti, Paolo. "Large signal design of silicon field effect transistors for linear radio frequency power amplifiers." Thesis, De Montfort University, 2006. http://hdl.handle.net/2086/13294.

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42

Jang, Won Suk. "Embedded system for construction material tracking using combination of radio frequency and ultrasound signal." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7683.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.<br>Thesis research directed by: Dept. of Civil and Environmental Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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Flowers, Bryse Austin. "Adversarial RFML: Evading Deep Learning Enabled Signal Classification." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/91987.

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Deep learning has become an ubiquitous part of research in all fields, including wireless communications. Researchers have shown the ability to leverage deep neural networks (DNNs) that operate on raw in-phase and quadrature samples, termed Radio Frequency Machine Learning (RFML), to synthesize new waveforms, control radio resources, as well as detect and classify signals. While there are numerous advantages to RFML, this thesis answers the question "is it secure?" DNNs have been shown, in other applications such as Computer Vision (CV), to be vulnerable to what are known as adversarial evasio

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O'Brien, Kathleen [Verfasser]. "Inductively Coupled Radio Frequency Power Transmission System for Wireless Systems and Devices / Kathleen O'Brien." Aachen : Shaker, 2007. http://d-nb.info/1166516717/34.

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Sim, Zhi Wei. "Radio frequency energy harvesting for embedded sensor networks in the natural environment." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/radio-frequency-energy-harvesting-for-embedded-sensor-networks-in-the-natural-environment(b0f3db83-8a82-4376-841b-d79bcd0d16ae).html.

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The agricultural sector is an emerging application area for Wireless Sensor Networks (WSNs). This requires sensor nodes to be deployed in the outdoor environment so as to monitor pertinent natural features, such as soil condition or pest infestation. Limited energy supply and subsequent battery replacement are common issues for these agricultural sensor nodes. One possible solution is to use energy harvesting, where the ambient energy is extracted and converted into usable electrical form to energise the wireless sensors. The work presented in this thesis investigates the feasibility of using

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Toh, Leng Huei. "A follow-up study on wireless power transmission for unmanned air vechicles [sic vehicles]." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Dec%5FToh.pdf.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, December 2007.<br>Thesis Advisor(s): Jenn, David C. "December 2007." Description based on title screen as viewed on January 24, 2008. Includes bibliographical references (p. 85-88). Also available in print.

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Qian, Hua. "Power Efficiency Improvements for Wireless Transmissions." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/11649.

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Many communications signal formats are not power efficient because of their large peak-to-average power ratios (PARs). Moreover, in the presence of nonlinear devices such as power amplifiers (PAs) or mixers, the non-constant-modulus signals may generate both in-band distortion and out-of-band interference. Backing off the signal to the linear region of the device further reduces the system power efficiency. To improve the power efficiency of the communication system, one can pursue two approaches: i) linearize the PA; ii) reduce the high PAR of the input signal. In this dissertation, we fir

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Hetzel, Simon Andrew. "Power efficient linear transmitters and the LINC technique." Thesis, University of Bristol, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261286.

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Park, Youngcheol. "Dual-Band Transmitters Using Digitally Predistorted Frequency Multipliers for Reconfigurable Radios." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5107.

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The objective of the proposed research is to develop simplified reconfigurable transmission systems with frequency multipliers for the transmission of complex modulated signals. Because they rely on nonlinear properties, frequency multiplier-based transmission systems require proper linearization techniques and accurate modeling of the signal transfer function. To accomplish these two goals, the author has developed techniques to model and linearize frequency multipliers and to digitize feedback signals for nonlinear characterization. First, adaptive predistortion techniques and zonal transf

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Peng, Song, Zhang XiaoLin, Cao Xue, and Qi Xia. "THE APPLICATION OF DIGITAL DEMODULATION TECHNIQUE FOR FREQUENCY MODULATION SIGNAL IN TELEMETRY RECEIVER." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/604956.

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International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, California<br>Combined with an example of digital telemetry receiver design, this paper mainly discusses the application of software radio in telemetry receiver. The paper begins with an introduction of applying high efficiency digital filter and math analysis in quadrature digital frequency modulation and demodulation to digital frequency conversion technique. Next, Simulink/Matlab is used to simulate digital telemetry receiver. The method of simulation, analysis and calculation of perf

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