Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Ui-Gyu Choi"'
Publikováno v:
Automatika, Vol 62, Iss 3-4, Pp 449-453 (2021)
An active isolator achieving both high isolation and low insertion loss at 2.45 GHz is proposed. The isolator is based on an asymmetric coupler and is designed to leverage the gain and reverse isolation of an amplifier and coupling coefficients betwe
Externí odkaz:
https://doaj.org/article/68a6aa9b04a7450eb316cdb90ca2eb5e
Autor:
Ui-Gyu Choi, Jong-Ryul Yang
Publikováno v:
Energies, Vol 11, Iss 8, p 2083 (2018)
In this article, a highly efficient power module is presented with two class-E power amplifiers and an adaptive power combiner for transmitting output powers >100 W at 6.78 MHz in a wireless power transfer system. The losses caused by the combiners a
Externí odkaz:
https://doaj.org/article/4e91cdf0fce8447ab437336e21ba21a5
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 71:1501-1508
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::915587c4b56183ac5213da5dcd97f0ff
https://doi.org/10.1109/tmtt.2022.3223953
https://doi.org/10.1109/tmtt.2022.3223953
Publikováno v:
Automatika, Vol 62, Iss 3-4, Pp 449-453 (2021)
Automatika : časopis za automatiku, mjerenje, elektroniku, računarstvo i komunikacije
Volume 62
Issue 3-4
Automatika : časopis za automatiku, mjerenje, elektroniku, računarstvo i komunikacije
Volume 62
Issue 3-4
An active isolator achieving both high isolation and low insertion loss at 2.45 GHz is proposed. The isolator is based on an asymmetric coupler and is designed to leverage the gain and reverse isolation of an amplifier and coupling coefficients betwe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90bf79302338adb7256076780627b636
https://doi.org/10.1080/00051144.2021.1984633
https://doi.org/10.1080/00051144.2021.1984633
Publikováno v:
2022 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fd4b58f6507840a7ae7b71c8434b953
https://doi.org/10.1109/rfit54256.2022.9882491
https://doi.org/10.1109/rfit54256.2022.9882491
Publikováno v:
2022 14th Global Symposium on Millimeter-Waves & Terahertz (GSMM).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c879bbd83e32a86c3b4f9ee2c9f6ccb
https://doi.org/10.1109/gsmm53818.2022.9792354
https://doi.org/10.1109/gsmm53818.2022.9792354
Publikováno v:
IEEE Microwave and Wireless Components Letters. 31:1020-1022
A $V$ -band CMOS frequency tripler with efficient input–output, and interstage matching networks is proposed to improve the output power and conversion efficiency. The interstage matching network, located between a tripler-core and a buffer amplifi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a933585f0de8e7dbafefdcb9b435b3c1
https://doi.org/10.1109/lmwc.2021.3088860
https://doi.org/10.1109/lmwc.2021.3088860
Publikováno v:
Microwave and Optical Technology Letters. 63:91-96
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc67f120ac80f8566dce138269e4a91f
https://doi.org/10.1002/mop.32575
https://doi.org/10.1002/mop.32575
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 68:4615-4617
A method of measuring the amplitude ratios and phase differences among the same RF output signals from multiple ports at the same frequency is proposed. A power-combining module is used to couple multiple signals vectorially from the ports. In the pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e3e6715e5b1506582ffb83b208fc92b
https://doi.org/10.1109/tim.2019.2943976
https://doi.org/10.1109/tim.2019.2943976
Autor:
Ui-Gyu Choi, Jong-Ryul Yang
Publikováno v:
2018 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT).
The class-E power amplifier module using an adaptive power combiner is proposed for 6.78-MHz wireless power transfer system for medium power transmission. Two class-E power amplifiers are designed to obtain more than 50-W output power at the load imp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7a1adb3b29e8873951091f13354fb52
https://doi.org/10.1109/rfit.2018.8524057
https://doi.org/10.1109/rfit.2018.8524057