Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Younghwan Choo"'
Autor:
Jeong-Hyun Cho, Dong-Kyu Kim, Hong-Hyun Bae, Yong-Jin Lee, Seok-Tae Koh, Younghwan Choo, Ji-Seon Paek, Hyun-Sik Kim
Publikováno v:
IEEE Journal of Solid-State Circuits. 57:3840-3852
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40d82379c1c6c0c557a634f6379e7d22
https://doi.org/10.1109/jssc.2022.3193712
https://doi.org/10.1109/jssc.2022.3193712
Autor:
Ji-Seon Paek, Dongsu Kim, Jae-Yeol Han, Younghwan Choo, Jun-Suk Bang, Seungchan Park, Jongbeom Baek, Takahiro Nomiyama, Ik-Hwan Kim, Jongwoo Lee
Publikováno v:
IEEE Journal of Solid-State Circuits. 57:1075-1089
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf146cb482a72ea9fe675d4012e445e3
https://doi.org/10.1109/jssc.2022.3144771
https://doi.org/10.1109/jssc.2022.3144771
Autor:
Jun-Suk Bang, Dongsu Kim, Jeongkwang Lee, Sungyoub Jung, Younghwan Choo, Seungchan Park, Young-Ho Jung, Jae-Young Ko, Takahiro Norniyama, Jongbeom Baek, Jaeyeol Han, Sang-Han Lee, Ik-Hwan Kim, Ji-Seon Paek, Jongwoo Lee, Thomas Byunghak Cho
Publikováno v:
2022 IEEE International Solid- State Circuits Conference (ISSCC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79973697fbec8a9e136f1c395b52c1d1
https://doi.org/10.1109/isscc42614.2022.9731655
https://doi.org/10.1109/isscc42614.2022.9731655
Autor:
Jeong-Hyun Cho, Dong-Kyu Kim, Hong-Hyun Bae, Yong-Jin Lee, Seok-Tae Koh, Younghwan Choo, Ji-Seon Paek, Hyun-Sik Kim
Publikováno v:
2022 IEEE International Solid- State Circuits Conference (ISSCC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c724574a41623f8b078c2083d123e35f
https://doi.org/10.1109/isscc42614.2022.9731726
https://doi.org/10.1109/isscc42614.2022.9731726
Publikováno v:
VLSI Circuits
This paper presents a two-chip supply modulation architecture for efficient RF power amplification using a fully switched-mode supply modulator (SM) and a linear-assisted hybrid SM to support simultaneous transmission on LTE and 5G bands. The designe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9a9d99f14e8d60445f19671717eef4b
https://doi.org/10.23919/vlsicircuits52068.2021.9492518
https://doi.org/10.23919/vlsicircuits52068.2021.9492518
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 67:183-194
This paper presents a hybrid supply modulator (SM) including a buck-boost (BB) converter, which has wide battery operating range for cellular envelope tracking (ET) applications. The proposed SM supports both ET and average power tracking (APT) mode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff341ac86c638973a4711637d4bdcfa8
https://doi.org/10.1109/tmtt.2018.2879323
https://doi.org/10.1109/tmtt.2018.2879323
Autor:
Ik-Hwan Kim, Jong-Beom Baek, Ji-Seon Paek, Jaeyeol Han, Euiyoung Park, Dongsu Kim, Inyup Kang, Jeong-Hyun Choi, Takahiro Nomiyama, Younghwan Choo, Jongwoo Lee, Jun-Suk Bang, Sung-Jun Lee, Yong-Sik Youn, Thomas Byunghak Cho
Publikováno v:
ISSCC
In the recent 3GPP standard, 5G New Radio (NR) in the sub-6GHz frequency band supports up to 100MHz bandwidth (BW) for uplink channel and requires fast on/off transition below $10 \mu \mathrm {s}$ to support short transition-time interval (TTI). Thus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4321cfb722cd82417e974f5376f3dbc
https://doi.org/10.1109/isscc.2019.8662460
https://doi.org/10.1109/isscc.2019.8662460
Autor:
Ji-Seon Paek, Dongsu Kim, Sung-Jun Lee, Younghwan Choo, Jeong-Hyun Choi, Jun-Hee Jung, Yong-Sik Youn, Thomas Byunghak Cho, Jaeyeol Han, Seung-Chul Lee
Publikováno v:
IEEE Journal of Solid-State Circuits. 51:2757-2768
This paper presents a hybrid supply modulator (SM) with a comprehensive analysis of receiver (RX) band noise in an envelope tracking power amplifier (ET-PA). The designed SM supports both ET mode and average power tracking (APT) mode depending on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e744a92c4f7ffe996e2a94b5601b22dc
https://doi.org/10.1109/jssc.2016.2604296
https://doi.org/10.1109/jssc.2016.2604296
Autor:
Younghwan Choo, Dongsu Kim, Inyup Kang, Ji-Seon Paek, Thomas Byunghak Cho, Takahiro Nomiyama, Sung-Jun Lee, Euiyoung Park, Yong-Sik Youn, Jun-Hee Jung, Jaeyeol Han, Jongwoo Lee, Jeong-Hyun Choi, Jong-Beom Baek
Publikováno v:
ISSCC
Uplink carrier aggregation (UL-CA) and high-power user equipment (HPUE) are proposed in the recent 3GPP standard [1]. UL-CA increases data-rate by aggregating intra-or inter-band carriers, and requires a supply modulator (SM) IC to generate two indep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::989566deeda3658dff0dff9fccf9ad54
https://doi.org/10.1109/isscc.2018.8310370
https://doi.org/10.1109/isscc.2018.8310370
Autor:
Ji-Seon Paek, Yong-Sik Youn, Younghwan Choo, Seung-Chul Lee, Dongsu Kim, Inyup Kang, Thomas Byunghak Cho, Jeong-Hyun Choi, Jun-Hee Jung, Sung-Jun Lee
Publikováno v:
ISSCC
Recently, supply modulation (SM), instead of a constant supply voltage, has raised interest in enhancing the overall SM-PA efficiency. In the average-power-tracking (APT) method, a buck converter simply generates stair-case voltages for a PA accordin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff4c8b27f08100ceeea157d94dab1bc5
https://doi.org/10.1109/isscc.2016.7418053
https://doi.org/10.1109/isscc.2016.7418053