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Dissertations / Theses on the topic 'Class AB power amplifier'

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Published: 4 June 2021

Last updated: 4 February 2022

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1

Huang, Chih-Jung. "Opto-electronic class AB microwave power amplifier using photoconductive switch technology." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4458.

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Thesis (Ph.D.)--University of Missouri-Columbia, 2006.<br>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 (April 26, 2007) Vita. Includes bibliographical references.

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2

Venkataramani, Muthuswamy. "Efficiency Improvement of WCDMA Base Station Transmitters using Class-F power amplifiers." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/9900.

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Universal Mobile Telecommunications Systems (UMTS) is the preferred third generation (3G) communication standard for mobile communications and will provide worldwide coverage, a convenient software technology and very high data rate. The high data rate, especially, requires the use of bandwidth-efficient modulation schemes such as Quadrature Phase Shift Keying (QPSK). But modulation schemes such as QPSK need, in turn, a very linear power from the output of the transmitter power amplifier in order to meet the spectral requirements. A linear power amplifier, traditionally, has very low energy ef

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Phan, Diem Thanh. "Performance Comparison of Harmonically Tuned Power Amplifiers at 28 GHz in SiGe BiCMOS." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/75312.

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As the demand for wireless electronics is increasing, more and more gadgets are connected wirelessly and devices are being improved constantly. The need of the new research and development for advance electronics with high performances is the priority. The data transfer rates are improved for faster communication and better efficiency is to reduce the battery consumption in handheld devices. This thesis presents three single-stage power amplifiers (PAs): class-AB, class-F and inverse class-F (class-F-1) at 28 GHz. The PAs have identical input networks: input matching, base DC feed, and base s

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4

Loikkanen, M. (Mikko). "Design and compensation of high performance class AB amplifiers." Doctoral thesis, University of Oulu, 2010. http://urn.fi/urn:isbn:9789514261770.

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Abstract Class A and class AB operational amplifiers are an essential part of a mixed- signal chip, where they are used as active filter sub-blocks, compensators, reference current generators and voltage buffers, to name just a few of many applications. For analog circuits such as operational amplifiers a mixed-signal chip is a very unfriendly operating environment, where the power supply is often corrupted by high current switching circuits. In addition, power supply voltages for analog blocks are shrinking, because of the deployment of new battery technologies and fine line length integrated

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5

Hussaini, Abubakar S. "Energy efficient radio frequency system design for mobile WiMax applications. Modelling, optimisation and measurement of radio frequency power amplifier covering WiMax bandwidth based on the combination of class AB, class B, and C operations." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5749.

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In today´s digital world, information and communication technology accounts for 3% and 2% of the global power consumption and CO2 emissions respectively. This alarming figure is on an upward trend, as future telecommunications systems and handsets will become even more power hungry since new services with higher bandwidth requirements emerge as part of the so called ¿future internet¿ paradigm. In addition, the mobile handset industry is tightly coupled to the consumer need for more sophisticated handsets with greater battery lifetime.

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Hussaini, Abubakar Sadiq. "Energy efficient radio frequency system design for mobile WiMax applications : modelling, optimisation and measurement of radio frequency power amplifier covering WiMax bandwidth based on the combination of class AB, class B, and C operations." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5749.

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In today's digital world, information and communication technology accounts for 3% and 2% of the global power consumption and CO2 emissions respectively. This alarming figure is on an upward trend, as future telecommunications systems and handsets will become even more power hungry since new services with higher bandwidth requirements emerge as part of the so called 'future internet' paradigm. In addition, the mobile handset industry is tightly coupled to the consumer need for more sophisticated handsets with greater battery lifetime. If we cannot make any significant step to reducing the ener

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7

Giry, Alexandre. "Étude des potentialités des technologies CMOS avancées pour les radiofréquences : application aux amplificateurs de puissance." Grenoble INPG, 2001. http://www.theses.fr/2001INPG0057.

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8

McKinley, Michael Dean. "Improved frequency domain measurement techniques for characterizing power amplifier and multipath environments." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24722.

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Thesis (Ph.D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: James Stevenson Kenney; Committee Member: Gregory David Durgin; Committee Member: Madhavan Swaminathan

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9

Ayad, Mohammed. "Etude et Conception d’amplificateurs DOHERTY GaN en technologie Quasi - MMIC en bande C." Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0027.

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Ce travail répond à un besoin industriel accru en termes d’amplification des signaux sur porteuses à enveloppes variables utilisés par les systèmes de télécommunications actuels. Ces signaux disposent d’un fort PAPR et d’une distribution statistique d’enveloppe centrée en-deçà de la valeur crête d’enveloppe. La raison pour laquelle les industriels télécoms requièrent alors des amplificateurs de très fortes puissances de sortie, robustes, fiables et ayant une dépense énergétique optimale le long de la dynamique d’enveloppe associée à un niveau de linéarité acceptable. Ce document expose les rés

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Kubowicz, Richard. "Class-E power amplifier." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0017/MQ53437.pdf.

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11

Uherek, Jaromír. "Návrh vysokonapěťového zdroje sinusového napětí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220114.

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Object of the master´s thesis is design of a high voltage power supply for testing insulation materials with output voltage 50 V - 2 kV at fixed frequency 50 Hz. The power supply is controlled by personal computer and measured data are sent back to the personal computer. The Universal Serial Bus (USB) is used for communication between the PC and the device.

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12

Tsang, Kai Shing. "Class-F Power Amplifier with Maximized PAE." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/371.

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Due to the rapid development of telecommunication devices, operating speeds are getting faster and more power is being consumed by those devices. Therefore, there is a big concern on how to prolong the battery life in order to fit consumers’ needs. Power amplifiers (PA) at the front end of wireless equipment have drawn a big concern from engineers because of their large power consumption in the system. There is a lot research conducted on PA solutions for improving power-added efficiency (PAE) of amplifiers. PAE is a figure of merit representing how efficient the PA converts DC power to RF po

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13

Caballero, Angel A. 1981. "A class-D-tracking-rail class-A audio power amplifier." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28384.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.<br>Includes bibliographical references (p. 63-64).<br>A tracking-rail power audio amplifier was designed and partially implemented to deliver up to 100W into an 8Q load with very low signal distortion and high power efficiency. The design uses a class-A amplifier, known for its low signal distortion but low power efficiency (less than 50%), to amplify the audio signal. Class-D amplifiers, known for their high power efficiency (greater than 85%) but high signal distortion, provid

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14

Stenstrøm, Andreas Berg. "Wideband Efficiency in a Class-F Power Amplifier." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26319.

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In this thesis, the design of a class-F/inverse class-F amplifier with high efficiency in a 1.2 GHz bandwidth and center frequency at 2.4 GHz is presented. The harmonic tuning is done by using a CAD load pull test bench in Agilent ADS. The optimal impedances at f0, and at the harmonics 2f0 and 3f0, which gives the best performance is found by using the test bench. These impedances are realized in matching networks with passive components, microstrip lines and open circuit stubs. Two identical amplifiers were manufactured and characterized with small signal, large signal and two tone measuremen

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15

Al-Shahrani, Saad Mohammed. "Design of Class-E Radio Frequency Power Amplifier." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/11116.

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Power amplifiers (PA) are typically the most power-consuming building blocks of RF transceivers. Therefore, the design of a high-efficiency radio frequency power amplifier is the most obvious solution to overcoming the battery lifetime limitation in the portable communication systems. A power amplifier's classes (A, AB, B, C, F, E, etc), and design techniques (Load-pull and large-signal S-parameters techniques) are presented. The design accuracy of class-A power amplifier based on the small-signal S-parameters was investigated, where compression in the power gain was used as an indicator fo

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Raavi, Srinivasa. "Design of a Wideband Class J Power Amplifier." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc271882/.

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A conventional RF power amplifier will convert the low powered radio frequency signals into high powered signals. Along with the expected ability to increase the communication distance, data transfer rates, RF power amplifiers also have many applications which include military radar system, whether forecasting, etc. The main objective of any power amplifier research is to increase the efficiency while maintaining linearity and broadening the frequency of operation. The main motivation for the renewed interest in PA technology comes from the technical challenges and the economics of modern digi

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17

Chan, Chung-Kei Thomas. "CMOS class E power amplifier for mobile communications." Thesis, Imperial College London, 2003. http://hdl.handle.net/10044/1/8524.

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18

Khan, Farzana Noor. "Gallium nitride class-F power amplifier for UMTSWCDMA applications." Thesis, University of Ottawa (Canada), 2008. http://hdl.handle.net/10393/27697.

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The importance of wireless communications in today's telecommunications industry is indubitable. Wireless technologies are used in almost every aspect of our everyday life. Universal Mobile Telecommunications System (UMTS) technology has already implemented 3G communication standard for mobile communications. Power amplifiers are the most power consuming unit in wireless communication systems. The power amplifiers used in UMTS devices need to be highly efficient. Improved efficiency not only extends the battery life but also reduces the DC power consumption, transmitter size and weight. Althou

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19

Aripirala, Manoj Kumar. "A compact switching mode class-f power amplifier design." Thesis, Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/55062.

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Even though there had been extensive research in Switching Mode Power Amplifier design their applications at industry level are quite limited. This is because a Fully-Integrated Switching Mode Power Amplifier using conventional active devices such as Bipolar Junction Transistors (BJT) or Metal Oxide Semiconductor Field Effect Transistor (MOSFET) is challenging due to the inherent design challenges in the Switching Power Amplifier design. A Fully-Integrated Differential Class-F2,3 Power Amplifier design is explored for this Thesis research. This Power Amplifier has a maximum theoretical efficie

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Skaria, Giji. "Class F and inverse class F power amplifier subject to electrical stress effect." Master's thesis, University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5038.

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This study investigated the Class F and inverse Class F RF power amplifier operating at 5.8 GHz. The major challenging issue in design and implementation of CMOS power transistor is the breakdown voltage especially in sub-micron CMOS technologies. In order to eliminate this problem a Cascode topologies were implemented to reduce the Drain-to-Source voltage (stress). A Cascode Class F & Inverse Class F RF power amplifier were designed, and optimized in order to improve efficiency and reliability using 0.18micrometers] CMOS technology process. A 50% decrease in the stress has been achieved in th

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21

Rahman, Md Rejaur. "Class E GaN Power Amplifier Design for WiMAX Base Stations." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34231.

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Modern wireless communication systems transmit complex modulated signals with high peak to average ratio in order to deliver high data rates. It demands wide bandwidth and rigorous efficiency performance for power amplifiers. Today’s conventional RF power amplifiers have relatively poor operating efficiency and require more power and area for operation. Therefore, more research on high efficiency power amplifier is crucial to the growth of the wireless industry. Until recent days, WiMAX systems are using technology processes such as Gallium Arsenide (GaAs) and Si LDMOSFET to obtain the perform

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22

Ebbeni, May. "Watt-class continuous wave Er3+/Yb3+ fiber amplifier." Kansas State University, 2011. http://hdl.handle.net/2097/13256.

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Master of Science<br>Department of Physics<br>Brian R. Washburn<br>Rare-earth doped optical fibers can be used to make optical amplifiers in the near infrared with large optical gain in an all fiber based system. Indeed, erbium doped fibers made gain possible within the 1532 to 1560 nm band which makes long span fiber optical communication systems a possibility. Erbium doped fibers have also been used to make narrow linewidth or mode-locked lasers. Other rare-earth doped fibers can be used for amplifiers in other near-infrared spectral regions. Recently, fiber amplifier technology has been pus

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Gilasgar, Mitra. "Reconfigurable high efficiency class-F power amplifier using CMOS-MEMS technology." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/460685.

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The increasing demand for wireless products to be part of our daily lives brings the need for longer battery lifetime, smaller size and lower cost. To increase battery lifetime, high efficiency power amplifiers (PAs) are needed; To make them smaller, integration or reconfiguration is aimed and to reach lower costs, technologies such as CMOS are final goals. However integration of high efficiency PA in CMOS is challenging due to the technology limitations which restricts the achievable output power and efficiency of the PA. In order to bring solutions for the above-mentioned requirements, in th

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24

Song, Ping. "A 1.0-V CMOS class-E power amplifier for bluetooth applications /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202005%20SONG.

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Sajedin, M., Issa T. Elfergani, J. Rodriguez, et al. "Multi-Resonant Class-F Power Amplifier Design for 5G Cellular Networks." RadioEngineering, 2020. http://hdl.handle.net/10454/18495.

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yes<br>This work integrates a harmonic tuning mechanism in synergy with the GaN HEMT transistor for 5G mobile transceiver applications. Following a theoretical study on the operational behavior of the Class-F power amplifier (PA), a complete amplifier design procedure is described that includes the proposed Harmonic Control Circuits for the second and third harmonics and optimum loading conditions for phase shifting of the drain current and voltage waveforms. The performance improvement provided by the Class-F configuration is validated by comparing the experimental and simulated results. The

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Pundhir, Varun. "Designing and Simulation of Various Class-F Radio-Frequency Power Amplifier." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1464363065.

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27

Book, Stefan. "1kW Class-E solid state power amplifier for cyclotron RF-source." Thesis, Uppsala universitet, FREIA, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-341693.

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This thesis discusses the design, construction and testing of a highefficiency, 100 MHz, 1 kW, Class-E solid state power amplifier. The design was performed with the aid of computer simulations using electronic design software (ADS). The amplifier was constructed around Ampleon's BLF188XR LDMOS transistor in a single ended design. The results for 100 MHz operation show a power added efficiency of 82% at 1200 W pulsed power output. For operation at 102 MHz results show a power added efficiency of 86% at 1050 W pulsed power output. Measurements of the drain- and gate voltage waveforms provide va

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28

Demir, Ibrahim. "Cmos Class-e Power Amplifier Modelling And Design Including Channel Resistance Effects." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605657/index.pdf.

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CMOS is the favorite candidate process for the high integration of the wireless communication IC blocks, RF frontend and digital baseband circuitry. Also the design of the RF power amplifier stage is the one of the most important part of the RF CMOS circuit design. Since high frequency and high power simultaneously exists on this stage, devices works on the limits of the process. Therefore standard device models may not be valid enough for a successful design. In the thesis high frequency passive device and MOS transistor models for the CMOS process searched though the literature and presented

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Mohsin, Taif. "Design of a predriver for an EDMOS-based Class-D power amplifier." Thesis, Linköpings universitet, Elektroniska komponenter, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-98133.

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This thesis addresses the potential of implementing a predriver for class-D power amplifier for WLAN in 65 nm CMOS technology. In total, eight different predrivers have been created using Cadence Virtuoso CAD tools. All designs have been tested using Agilent's Advance Design System (ADS) and simulated using the ADS-Cadence dynamic link. Furthermore, a comparison between the eight designs and the reference design has been done. The examined parameters were output power (Pout), efficiency, and effective area consumption. The simulation results show that most of the proposed designs obtain higher

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Kutty, Karan. "CLASS-E CASCODE POWER AMPLIFIER ANALYSIS AND DESIGN FOR LONG TERM RELIABILITY." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2703.

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This study investigated the Class-E power amplifier operating at 5.2 GHz. Since the operation of this amplifier applies a lot of stress on the switching transistor, a cascode topology was applied in order to reduce the drain-source voltage stress. Such an amplifier was designed and optimized in order to improve stability, power added efficiency, and matching. A layout for the said design was then created to be fabrication-ready using the TSMC 0.18 um technology. Post-layout simulations were performed in order to realize a more realistic circuit performance with the layout design in mind. Long-

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Compton, Alex D. "High-Efficiency Wideband Class-F Power Amplifier with Electronically Tunable Resonant Network." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1422547511.

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32

Chang, Chun-Kai, and 張鈞凱. "The Class-AB Power Amplifier for WLAN 802.11g." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/13153874570380364806.

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碩士<br>臺灣大學<br>電子工程學研究所<br>98<br>This thesis presents the development of 2.4GHz ISM-band CMOS power amplifier in TSMC 0.18um 1P6M CMOS process. The first main part is on the design of power amplifier. We use two layer metal lines to design the inductor in output matching network at output stage. It can increase the Q factor, and reduce the loss, the PAE can be improved. The measurements have shown this power amplifier provides a gain of 19dB at 2.4GHz, and the output power transmits 20dBm power with 25% power added efficiency at 1-dB compression point. The maximum output power of this amplifier

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Lee, Po-Chen, and 李柏辰. "A Wideband Class-AB Power Amplifier in 65nm CMOS." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/67935160782026903172.

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碩士<br>國立清華大學<br>電機工程學系<br>102<br>In this thesis, there is a wideband class-AB power amplifier (PA) had been designed, simulated, analyzed, and taped out with TSMC 65nm CMOS technology. The thesis is organized into five chapters. The first two chapters are the applications, related parameters, and design theories of the PA. The other chapters are about the design flow, circuit simulation and results analysis. The complete circuit is a radio-frequency transmitter, which includes an input buffer stage, a power stage, and a balance to unbalance transformer to connect with the output port. The wide

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Yu, Choa-Ho, and 余昭和. "Efficiency Improvement of the Class-AB Power Amplifier adopting Class-E Mode." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/85189969227190403038.

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碩士<br>國立東華大學<br>電機工程學系<br>94<br>This thesis presents an attempt method using a 2.4GHz ISM band of two-stage class-AB power amplifier (PA) WS9901 configured as class-E operation in order to increase the efficiency of the PA. The two-stage class-AB PA (WS9901) can be simulated and modeled using WIN 2um HBT process. The simulated PA module is used to analyze the class-E operation and to improve the efficiency. The implementation of the PCB board adopts a layout circuit from the data sheet. The desired class-E amplifier is slightly modified by using this PCB board. The proposed class-E amplifier a

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Su, Yang-Fan, and 蘇揚帆. "Low Power and Low Distortion Class AB/D Audio Power Amplifier Design." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/13440045327533716004.

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碩士<br>國立清華大學<br>電子工程研究所<br>94<br>The purpose of this thesis is to develop a switch-mode assisted linear power amplifier and demonstrate its performance. The switch-mode assisted linear amplifier topology combines current analog (Class AB) and switching (Class D) amplifier technology into one circuit. The idea behind this combination is to develop an amplifier which has high fidelity while maintaining a high efficiency. After discussing some important theoretical considerations such as the hysteresis effects and the switching frequency, the relation between the THD, power efficiency and the sys

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Vatankhahghadim, Aynaz. "Design of High Efficiency Broadband Adjusted Class AB Power Amplifier." Thesis, 2010. http://hdl.handle.net/10012/5165.

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This thesis starts with a discussion of different classes of operation of power amplifiers (PAs). Comparing advantages and disadvantages of these classes, class AB is chosen as the best initial candidate for the design of broadband PA. Different methods for design of matching networks are first discussed. Some of them fall into the group of narrowband matching networks, while others are suitable for a broadband context. Broadband design methodologies are categorized into two groups of real-to-real transformations and complex-to-real transformations. Complex-to-real transformations are the most

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Peruzzi, Robert O. "A novel amplifier system combining class D D/A conversion and low-power class AB operation /." Diss., 2004. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3154563.

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Tsai, Chi-Wen, and 蔡啟文. "Design of a Low Distortion Class-AB Power Amplifier with Active Tuning." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/53971789845556017596.

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碩士<br>國立東華大學<br>電機工程學系<br>94<br>In this thesis, an active tuning power amplifier with the output active inductor matching is presented. The proposed active tuning class-AB power amplifier is based on an output match network with gyrator topology and used for 2.4GHz ISM Band applications. An active inductor is added to adjust the output matching in order to reach the purposes of integrity of the signal, to alleviate the distortion, and to improve the efficiency. The proposed power amplifier is simulated using Agilent ADS software under 2um HBT model process parameter. The circuit can be operate

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Huang, Hsu-Yu, and 黃旭右. "High Output-Power High Linearity CMOS Class AB Audio Amplifier with Quiescent Current Control." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/81598010065314529844.

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碩士<br>國立交通大學<br>電機學院通訊與網路科技產業專班<br>95<br>With the advent of a highly-mobilized and individualized multimedia age, Class-D audio amplifiers with better power efficiency, among the applications of its kind, have gained a lot of attentions. However, in view of the fact that traditionally high output power, good linearity, and low distortion are expected in amplifiers alike, Class-D audio amplifiers may not be an ideal choice since it requires a complicated clock modulation or a compensatory control mechanism to make up to its poor output linearity. To look for an applicable alternative, therefor

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Hussaini, Abubakar S., B. A. L. Gwandu, Raed A. Abd-Alhameed, and Jonathan Rodriguez. "Design of Power Efficient Power Amplifier for B3G Base Stations." 2010. http://hdl.handle.net/10454/4793.

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yes<br>Fourth generation systems require the use of both amplitude and phase modulation to efficiently utilize the available spectrum and to obtain high data rates, hence imposing stringent requirements on the power amplifier in terms of efficiency and linearity and requires the power amplifier to operate linearly and efficiently. The B3G base station transceiver Doherty power amplifier was designed to operate over the frequency range of 3.47GHz to 3.53GHz mobile WiMAX band using Freescale¿s N-Channel Enhancement-Mode Lateral MO

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Chen, Chih Hao, and 陳志豪. "Design and Implementation of 2.4 GHz Class AB Power Amplifier and Wilkinson Power Divider for Wide Band." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/a3v626.

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Lai, Shr-Chau, and 賴仕超. "S-band and V-band Class AB Power Amplifiers." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/64535103421635204128.

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碩士<br>國立清華大學<br>電機工程學系<br>100<br>With the rapid development of the semiconductor industry, our daily life is flooded with all kinds of wireless communication products which bring a lot of convenience to people. Power amplifiers (PA) are essential to equipment such as high-end smartphones, wireless sensing radar or satellite communication systems, etc. The energy of radio signals continuously attenuate when propagating through the atmosphere. If there is no PA in a wireless communication radio frequency (RF) frontend circuit, the purpose of wireless communication cannot be achieved. In this

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Lin, Kun-Yi, and 林昆毅. "1V Class AB CMOS Power Amplifiers for RF Front-end Transmitters." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/52384409688979737954.

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碩士<br>國立東華大學<br>電機工程學系<br>90<br>Due to the becoming development of the wireless communication, the demand of the radio frequency (RF) IC is growing rapidly. Portable personal communication systems such as cellar phones, cordless phones, PDA, and pagers have become a part of our daily lives. Low cost, low power, minimizing external components and high level integration are the objects. The analog front-end which has to operate at radio frequencies are traditionally built form more expensive technologies like GaAs or silicon Bipolar which are optimized to provide signal ampli cation at radio fre

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Yao-TsungHsieh and 謝曜聰. "Design Automation for Class AB Operational Amplifier." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/5g762m.

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Chien, Yuan-Te, and 簡元德. "Research of CMOS Class E Power Amplifier, Adaptive Bias Power Amplifier and Transformer Combined Power Amplifier." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/57723754614600631078.

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碩士<br>國立臺灣大學<br>電信工程學研究所<br>100<br>The growth in wireless communication has strong demands in integrated solution to have faster transmission speed, more distance, and more reliable transmission. Power amplifier is one of the bottlenecks. Traditionally, Ⅲ-Ⅴ high electron mobility transistor, ex. GaAs has the high output power and high power added efficiency. It has certain restrictions and difficulties about using complementary metal-oxide semiconductor to design the power amplifiers. For the reason of system integration and small area to cost down, the fabrication of power amplifiers using co

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Li, Jian-hui, and 李建輝. "Low Voltage Low Power Class D Power Amplifier." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/17460053027990432960.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>92<br>Class D power amplifier applies in high efficiency circuit. In hearing aid system, we require high power efficiency, low-voltage and low-power. The operation of frequency is low frequency. All the circuits are designed based on the TSMC 035 CMOS process technology. The supply voltage is 1.5V and the input signal is 4KHz. Simulation results show that the Class D power efficiency is high efficiency amplifier. When 0.3V of 2KHz input signal is applied, The maximum THD is 0.63% and static current is 4uA and the efficiency is 83.6%.

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Wu, Kai-wen, and 吳開文. "Implementations on Power Amplifier Using Power-Combining Transformer and Inverse Class F Power Amplifier Techniques." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/01939584237494794282.

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碩士<br>國立中央大學<br>電機工程研究所<br>98<br>This thesis presents CMOS power amplifier (PA) implemented in 0.18um CMOS technology. The implemented circuits include two PA circuits. The first power amplifier is targeted for high output power. The power amplifier using power-combining transformer is presented. The second power amplifier is targeted for high-efficiency which power amplifier is based on the inverse class F technique. The measured results are summarized as below: the PA with power-combining transformer technique achieves a power gain of 12.2 dB with input and output return losses of 12.0 dB a

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Tseng-Hsin, Chiu. "A CMOS 2.4GHz Class-E Power Amplifier." 2003. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0009-0112200611295360.

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Yu, Hao-Wen, and 俞皓文. "Automatic Matching for Class-E Power Amplifier." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/fg9ckz.

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碩士<br>國立臺北科技大學<br>電子工程系<br>106<br>In this thesis, establishment of Class-E Power Amplifier structure, with MCU detecting parameters in order to finish automatic matching at RLC. To transfer the best power efficiency with traditional Class-E Power Amplifier, it has to go through impedance matching, analysis and design of coupling coil and other complicated calculation, at last, verifying constantly to find the most suitable RLC matching parameters. In the study, using inductive coupling Class-E Power Amplifier to wireless charging. MCU detects efficiency of primary and secondary side, compariso

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Chiu, Tseng-Hsin, and 邱曾鑫. "A CMOS 2.4GHz Class-E Power Amplifier." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/22636927368361578196.

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碩士<br>元智大學<br>電機工程學系<br>91<br>For the last few years, the personal wireless communications system has developed intensively the SOC (system on chip) technologies, and it is becoming clearer that the remarkable amount of growth in the SOC system for the personal wireless communications applications. Now, the overwhelming majority of part element of communication system is implemented in CMOS technology. For this reason, to integrate the whole personal communications system in a chip is very important, and the power amplifier is the key in the integration design. However, the design and implemen

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