Linearizing an L-band power amplifier for RADAR applications

Bibliographic Details
Main Author: Inácio, Ana Inês Silva
Publication Date: 2013
Format: Master thesis
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10773/13410
Summary: This thesis attempts to improve the linearity, while keeping the efficiency, of a given power amplifier to be used in RADAR applications. The thesis is divided in three major parts: first, the theoretical analysis around the chosen linearization technique is done by mathematical deduc-tion and MATLAB simulations. In second place, ADS simulations with low-frequency dithering applied to an amplifier model, provided by the man¬ufacturer of the amplifier, are performed. The desired characteristics found during simulations will be used on the design of the prototype. Then, using the designed prototype, measurements to compare with the previous simulations, will be done. To prove the concept idea, small and large signal, for a single-tone, and two-tone measurements, with and without dithering, will be performed. The improvement of the intermodulation distortion products using a dithered amplifier will be shown demonstrating actual linearity enhancement.
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spelling Linearizing an L-band power amplifier for RADAR applicationsEngenharia electrónicaAmplificadores de potênciaRadarThis thesis attempts to improve the linearity, while keeping the efficiency, of a given power amplifier to be used in RADAR applications. The thesis is divided in three major parts: first, the theoretical analysis around the chosen linearization technique is done by mathematical deduc-tion and MATLAB simulations. In second place, ADS simulations with low-frequency dithering applied to an amplifier model, provided by the man¬ufacturer of the amplifier, are performed. The desired characteristics found during simulations will be used on the design of the prototype. Then, using the designed prototype, measurements to compare with the previous simulations, will be done. To prove the concept idea, small and large signal, for a single-tone, and two-tone measurements, with and without dithering, will be performed. The improvement of the intermodulation distortion products using a dithered amplifier will be shown demonstrating actual linearity enhancement.Esta dissertação de Mestrado têm como principal objectivo aumentar a linearidade de um determinado amplificador de potência, mantendo a sua eficiência. Primeiramente, depois de escolhida a técnica a implementar (dither de baixa frequência (LFD)), vai ser feita uma análise com base numa dedução matemática seguida de simulações em MATLAB, para provar a sua eficácia. Simulações usando o modelo do amplificador (fornecido pelo fabricante) e a técnica de LFD vão ser feitas onde as condições necessárias à implementação do dither vão ser extraídas para, posteriormente serem usadas na construção de um prótotipo. Depois do design do prótotipo ser finalizado, e da placa completa ter sido produzida, os resultados das medições, vão ser comparados com as simulações. Medidas de sinal fraco e sinal forte, bem como medidas da distorção de intermodulação vão ser apresentadas e analisadas. No final, as medições anteriores vão ser utilizadas para comprovar a validade da técnica escolhida na linearização do amplificador para ser usado em aplicações de RADAR.Universidade de Aveiro2018-07-20T14:00:47Z2013-10-30T00:00:00Z2013-10-302015-10-30T15:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10773/13410TID:201563193engInácio, Ana Inês Silvainfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2024-05-06T03:52:38Zoai:ria.ua.pt:10773/13410Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T13:49:38.644730Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Linearizing an L-band power amplifier for RADAR applications
title Linearizing an L-band power amplifier for RADAR applications
spellingShingle Linearizing an L-band power amplifier for RADAR applications
Inácio, Ana Inês Silva
Engenharia electrónica
Amplificadores de potência
Radar
title_short Linearizing an L-band power amplifier for RADAR applications
title_full Linearizing an L-band power amplifier for RADAR applications
title_fullStr Linearizing an L-band power amplifier for RADAR applications
title_full_unstemmed Linearizing an L-band power amplifier for RADAR applications
title_sort Linearizing an L-band power amplifier for RADAR applications
author Inácio, Ana Inês Silva
author_facet Inácio, Ana Inês Silva
author_role author
dc.contributor.author.fl_str_mv Inácio, Ana Inês Silva
dc.subject.por.fl_str_mv Engenharia electrónica
Amplificadores de potência
Radar
topic Engenharia electrónica
Amplificadores de potência
Radar
description This thesis attempts to improve the linearity, while keeping the efficiency, of a given power amplifier to be used in RADAR applications. The thesis is divided in three major parts: first, the theoretical analysis around the chosen linearization technique is done by mathematical deduc-tion and MATLAB simulations. In second place, ADS simulations with low-frequency dithering applied to an amplifier model, provided by the man¬ufacturer of the amplifier, are performed. The desired characteristics found during simulations will be used on the design of the prototype. Then, using the designed prototype, measurements to compare with the previous simulations, will be done. To prove the concept idea, small and large signal, for a single-tone, and two-tone measurements, with and without dithering, will be performed. The improvement of the intermodulation distortion products using a dithered amplifier will be shown demonstrating actual linearity enhancement.
publishDate 2013
dc.date.none.fl_str_mv 2013-10-30T00:00:00Z
2013-10-30
2015-10-30T15:00:00Z
2018-07-20T14:00:47Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/13410
TID:201563193
url http://hdl.handle.net/10773/13410
identifier_str_mv TID:201563193
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de Aveiro
publisher.none.fl_str_mv Universidade de Aveiro
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
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