The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
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Os sistemas de telefonia móvel continuam a evoluir desde a 2ª geração, que começou no início da década de 1990, até a 5ª geração, que agora está em serviço. Junto com essa evolução, o amplificador de potência (PA) também evolui. As características exigidas para a AF mudam a cada geração. Neste artigo, daremos uma visão geral da evolução dos PAs desde os telemóveis de 2ª geração, como o GSM (sistema global de comunicações móveis), até aos telemóveis de 5ª geração, frequentemente designados por NR (novo rádio), em particular, o sistema de circuito. Especificamente, serão descritos os cinco itens seguintes. (1) Circuito de controle de potência de aumento e desaceleração correspondente ao GSM, (2) Tecnologia de circuito de auto-polarização para melhorar a linearidade que se torna importante após W-CDMA (acesso múltiplo por divisão de código de banda larga), (3) Métodos de comutação de modo de energia para melhorar a eficiência em baixa potência de saída, (4) métodos de combinação de energia que se tornaram importantes desde LTE (evolução de longo prazo) e (5) métodos de melhoria de eficiência de backoff representados por ET (rastreamento de envelope) e Doherty PA.
Satoshi TANAKA
Murata Manufacturing Co., Ltd.
Kenji MUKAI
Murata Manufacturing Co., Ltd.
Shohei IMAI
Murata Manufacturing Co., Ltd.
Hiroshi OKABE
Murata Manufacturing Co., Ltd.
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Satoshi TANAKA, Kenji MUKAI, Shohei IMAI, Hiroshi OKABE, "Evolution of Power Amplifiers for Mobile Phone Terminals from the 2nd Generation to the 5th Generation" in IEICE TRANSACTIONS on Electronics,
vol. E105-C, no. 10, pp. 421-432, October 2022, doi: 10.1587/transele.2022MMI0008.
Abstract: Mobile phone systems continue to evolve from the 2nd generation, which began in the early 1990s, to the 5th generation, which is now in service. Along with this evolution, the power amplifier (PA) is also evolved. The characteristics required for PA are changing with each generation. In this paper, we will give an overview of the evolution of PAs from the 2nd generation mobile phones such as GSM (global system for mobile communications) to the 5th generation mobile phones that is often called NR (new radio), in particular, the circuit system. Specifically, the following five items will be described. (1) Ramp-up and ramp-down power control circuit corresponding to GSM, (2) Self-bias circuit technology for improving linearity that becomes important after W-CDMA (wideband code division multiple access), (3) Power mode switching methods for improving efficiency at low output power, (4) Power combining methods that have become important since LTE (long term evolution), and (5) Backoff efficiency improvement methods represented by ET (envelop tracking) and Doherty PA.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2022MMI0008/_p
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@ARTICLE{e105-c_10_421,
author={Satoshi TANAKA, Kenji MUKAI, Shohei IMAI, Hiroshi OKABE, },
journal={IEICE TRANSACTIONS on Electronics},
title={Evolution of Power Amplifiers for Mobile Phone Terminals from the 2nd Generation to the 5th Generation},
year={2022},
volume={E105-C},
number={10},
pages={421-432},
abstract={Mobile phone systems continue to evolve from the 2nd generation, which began in the early 1990s, to the 5th generation, which is now in service. Along with this evolution, the power amplifier (PA) is also evolved. The characteristics required for PA are changing with each generation. In this paper, we will give an overview of the evolution of PAs from the 2nd generation mobile phones such as GSM (global system for mobile communications) to the 5th generation mobile phones that is often called NR (new radio), in particular, the circuit system. Specifically, the following five items will be described. (1) Ramp-up and ramp-down power control circuit corresponding to GSM, (2) Self-bias circuit technology for improving linearity that becomes important after W-CDMA (wideband code division multiple access), (3) Power mode switching methods for improving efficiency at low output power, (4) Power combining methods that have become important since LTE (long term evolution), and (5) Backoff efficiency improvement methods represented by ET (envelop tracking) and Doherty PA.},
keywords={},
doi={10.1587/transele.2022MMI0008},
ISSN={1745-1353},
month={October},}
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TY - JOUR
TI - Evolution of Power Amplifiers for Mobile Phone Terminals from the 2nd Generation to the 5th Generation
T2 - IEICE TRANSACTIONS on Electronics
SP - 421
EP - 432
AU - Satoshi TANAKA
AU - Kenji MUKAI
AU - Shohei IMAI
AU - Hiroshi OKABE
PY - 2022
DO - 10.1587/transele.2022MMI0008
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E105-C
IS - 10
JA - IEICE TRANSACTIONS on Electronics
Y1 - October 2022
AB - Mobile phone systems continue to evolve from the 2nd generation, which began in the early 1990s, to the 5th generation, which is now in service. Along with this evolution, the power amplifier (PA) is also evolved. The characteristics required for PA are changing with each generation. In this paper, we will give an overview of the evolution of PAs from the 2nd generation mobile phones such as GSM (global system for mobile communications) to the 5th generation mobile phones that is often called NR (new radio), in particular, the circuit system. Specifically, the following five items will be described. (1) Ramp-up and ramp-down power control circuit corresponding to GSM, (2) Self-bias circuit technology for improving linearity that becomes important after W-CDMA (wideband code division multiple access), (3) Power mode switching methods for improving efficiency at low output power, (4) Power combining methods that have become important since LTE (long term evolution), and (5) Backoff efficiency improvement methods represented by ET (envelop tracking) and Doherty PA.
ER -