Amplifier predistortion adaptation system
Autor(a) principal: | |
---|---|
Data de Publicação: | 2021 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/31349 |
Resumo: | In today’s world, with the demands needed to fulfil the challenges on 5G, it is important that Radio Frequency (RF) amplifiers work in a more efficient way. To meet this objective, one of the existing options focuses on the usage of linearization techniques to improve amplifier performance on its saturation zone. One relevant technique, which has great efficiency and linearization potential is the application of predistorters. They can be used with a pre-programed configuration or they may adapt their response in real-time, with the help of signal readings at the power amplifier’s (PA) output. This work focuses on the design and implementation of an amplifier predistortion real-time adaption system. This system measures the spectral power of an RF signal with the purpose of, in the future, incorporating a predistorter automatic adaption system. Having the Multiple-Input and Multiple-Output (MIMO) transmitter scenario as background, where a single transmitter is built from several low-power and wideband amplifiers (each of which require linearization actions), the developed spectrum measurement system assumed, from the start, the requirements of achieving a very low cost and reduced space confinement. |
id |
RCAP_9ff3adcf4f41755529656b084e43235f |
---|---|
oai_identifier_str |
oai:ria.ua.pt:10773/31349 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Amplifier predistortion adaptation systemPredistortionAnalog predistotionPower amplifierRadio frequencyIn today’s world, with the demands needed to fulfil the challenges on 5G, it is important that Radio Frequency (RF) amplifiers work in a more efficient way. To meet this objective, one of the existing options focuses on the usage of linearization techniques to improve amplifier performance on its saturation zone. One relevant technique, which has great efficiency and linearization potential is the application of predistorters. They can be used with a pre-programed configuration or they may adapt their response in real-time, with the help of signal readings at the power amplifier’s (PA) output. This work focuses on the design and implementation of an amplifier predistortion real-time adaption system. This system measures the spectral power of an RF signal with the purpose of, in the future, incorporating a predistorter automatic adaption system. Having the Multiple-Input and Multiple-Output (MIMO) transmitter scenario as background, where a single transmitter is built from several low-power and wideband amplifiers (each of which require linearization actions), the developed spectrum measurement system assumed, from the start, the requirements of achieving a very low cost and reduced space confinement.No mundo de hoje, com as exigências necessárias para cumprir os requisitos para o 5G, é fundamental que os amplificadores de Rádio Frequência (RF) funcionem de uma forma cada vez mais eficiente. Para cumprir esse objetivo, uma das opções existentes foca-se no uso de técnicas de linearização para melhorar o seu desempenho na sua zona de saturação. Uma das técnicas que mais se destaca, quer seja pela sua eficiência ou pelo nível de linearização que proporciona, é aquela que consiste na aplicação de pré-distorsores. Estes podem ser utilizados com uma configuração pré-programada ou podem adaptar a sua resposta em tempo real, recorrendo à leitura do sinal existente na saída do amplificador de potência. Este trabalho foca-se na construção de um sistema adaptativo para pré-distorção de amplificadores em tempo real. Este sistema realiza a medição espetral de um sinal de RF com o objetivo de no futuro ser usado para controlar um pré-distorsor. Tendo em consideração um cenário de Multiple-Input and Multiple-Output (MIMO), onde um transmissor é construído através de vários amplificadores de baixa potência e com banda larga (em que cada um requer algum tipo de linearização), o sistema de medida espectral assume, desde o início, os requisitos de obter um produto de baixo custo e que exija o mínimo espaço possível.2021-05-10T10:55:11Z2021-02-22T00:00:00Z2021-02-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10773/31349engSimões, Samuel Martinsinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:00:31Zoai:ria.ua.pt:10773/31349Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:03:15.430217Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Amplifier predistortion adaptation system |
title |
Amplifier predistortion adaptation system |
spellingShingle |
Amplifier predistortion adaptation system Simões, Samuel Martins Predistortion Analog predistotion Power amplifier Radio frequency |
title_short |
Amplifier predistortion adaptation system |
title_full |
Amplifier predistortion adaptation system |
title_fullStr |
Amplifier predistortion adaptation system |
title_full_unstemmed |
Amplifier predistortion adaptation system |
title_sort |
Amplifier predistortion adaptation system |
author |
Simões, Samuel Martins |
author_facet |
Simões, Samuel Martins |
author_role |
author |
dc.contributor.author.fl_str_mv |
Simões, Samuel Martins |
dc.subject.por.fl_str_mv |
Predistortion Analog predistotion Power amplifier Radio frequency |
topic |
Predistortion Analog predistotion Power amplifier Radio frequency |
description |
In today’s world, with the demands needed to fulfil the challenges on 5G, it is important that Radio Frequency (RF) amplifiers work in a more efficient way. To meet this objective, one of the existing options focuses on the usage of linearization techniques to improve amplifier performance on its saturation zone. One relevant technique, which has great efficiency and linearization potential is the application of predistorters. They can be used with a pre-programed configuration or they may adapt their response in real-time, with the help of signal readings at the power amplifier’s (PA) output. This work focuses on the design and implementation of an amplifier predistortion real-time adaption system. This system measures the spectral power of an RF signal with the purpose of, in the future, incorporating a predistorter automatic adaption system. Having the Multiple-Input and Multiple-Output (MIMO) transmitter scenario as background, where a single transmitter is built from several low-power and wideband amplifiers (each of which require linearization actions), the developed spectrum measurement system assumed, from the start, the requirements of achieving a very low cost and reduced space confinement. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-05-10T10:55:11Z 2021-02-22T00:00:00Z 2021-02-22 |
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/10773/31349 |
url |
http://hdl.handle.net/10773/31349 |
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.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799137687731437568 |