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A Dual-Band 47-dB Dynamic Range 0.5-dB/Step DPA with Dual-Path Power-Combining Structure for NB-IoT

This paper presents a digital power amplifier (DPA) with a 43-dB dynamic range and 0.5-dB/step gain steps for a narrow-band Internet of Things (NBIoT) transceiver application. The proposed DPA is implemented in a dual-band architecture for both the low band and high band of the frequency coverage in...

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Autores principales: Rad, Reza E., Kim, Sungjin, Pu, Younggun, Jung, Yeongjae, Huh, Hyungki, Yoo, Joonmo, Kim, Seokkee, Lee, Kang-Yoon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9100771/
https://www.ncbi.nlm.nih.gov/pubmed/35591183
http://dx.doi.org/10.3390/s22093493
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author Rad, Reza E.
Kim, Sungjin
Pu, Younggun
Jung, Yeongjae
Huh, Hyungki
Yoo, Joonmo
Kim, Seokkee
Lee, Kang-Yoon
author_facet Rad, Reza E.
Kim, Sungjin
Pu, Younggun
Jung, Yeongjae
Huh, Hyungki
Yoo, Joonmo
Kim, Seokkee
Lee, Kang-Yoon
author_sort Rad, Reza E.
collection PubMed
description This paper presents a digital power amplifier (DPA) with a 43-dB dynamic range and 0.5-dB/step gain steps for a narrow-band Internet of Things (NBIoT) transceiver application. The proposed DPA is implemented in a dual-band architecture for both the low band and high band of the frequency coverage in an NBIoT application. The proposed DPA is implemented in two individual paths, power amplification, and power attenuation, to provide a wide range when both paths are implemented. To perform the fine control over the gain steps, ten fully differential cascode power amplifier cores, in parallel with a binary sizing, are used to amplify power and enable signals and provide fine gain steps. For the attenuation path, ten steps of attenuated signal level are provided which are controlled with ten power cores, similar to the power amplification path in parallel but with a fixed, small size for the cores. The proposed implementation is finalized with output custom-made baluns at the output. The technique of using parallel controlled cores provides a fine power adjustability by using a small area on the die where the NBIoT is fabricated in a 65-nm CMOS technology. Experimental results show a dynamic range of 47 dB with 0.5-dB fine steps are also available.
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spelling pubmed-91007712022-05-14 A Dual-Band 47-dB Dynamic Range 0.5-dB/Step DPA with Dual-Path Power-Combining Structure for NB-IoT Rad, Reza E. Kim, Sungjin Pu, Younggun Jung, Yeongjae Huh, Hyungki Yoo, Joonmo Kim, Seokkee Lee, Kang-Yoon Sensors (Basel) Communication This paper presents a digital power amplifier (DPA) with a 43-dB dynamic range and 0.5-dB/step gain steps for a narrow-band Internet of Things (NBIoT) transceiver application. The proposed DPA is implemented in a dual-band architecture for both the low band and high band of the frequency coverage in an NBIoT application. The proposed DPA is implemented in two individual paths, power amplification, and power attenuation, to provide a wide range when both paths are implemented. To perform the fine control over the gain steps, ten fully differential cascode power amplifier cores, in parallel with a binary sizing, are used to amplify power and enable signals and provide fine gain steps. For the attenuation path, ten steps of attenuated signal level are provided which are controlled with ten power cores, similar to the power amplification path in parallel but with a fixed, small size for the cores. The proposed implementation is finalized with output custom-made baluns at the output. The technique of using parallel controlled cores provides a fine power adjustability by using a small area on the die where the NBIoT is fabricated in a 65-nm CMOS technology. Experimental results show a dynamic range of 47 dB with 0.5-dB fine steps are also available. MDPI 2022-05-04 /pmc/articles/PMC9100771/ /pubmed/35591183 http://dx.doi.org/10.3390/s22093493 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Rad, Reza E.
Kim, Sungjin
Pu, Younggun
Jung, Yeongjae
Huh, Hyungki
Yoo, Joonmo
Kim, Seokkee
Lee, Kang-Yoon
A Dual-Band 47-dB Dynamic Range 0.5-dB/Step DPA with Dual-Path Power-Combining Structure for NB-IoT
title A Dual-Band 47-dB Dynamic Range 0.5-dB/Step DPA with Dual-Path Power-Combining Structure for NB-IoT
title_full A Dual-Band 47-dB Dynamic Range 0.5-dB/Step DPA with Dual-Path Power-Combining Structure for NB-IoT
title_fullStr A Dual-Band 47-dB Dynamic Range 0.5-dB/Step DPA with Dual-Path Power-Combining Structure for NB-IoT
title_full_unstemmed A Dual-Band 47-dB Dynamic Range 0.5-dB/Step DPA with Dual-Path Power-Combining Structure for NB-IoT
title_short A Dual-Band 47-dB Dynamic Range 0.5-dB/Step DPA with Dual-Path Power-Combining Structure for NB-IoT
title_sort dual-band 47-db dynamic range 0.5-db/step dpa with dual-path power-combining structure for nb-iot
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9100771/
https://www.ncbi.nlm.nih.gov/pubmed/35591183
http://dx.doi.org/10.3390/s22093493
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