Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Junghwan Son"'
Publikováno v:
UV and Higher Energy Photonics: From Materials to Applications 2018.
AlGaN-based back-illuminated solar blind ultraviolet asymmetric metal-semiconductor-metal (MSM) photodetectors with high quantum efficiency have been fabricated on a sapphire substrate. To improve the performance of the Photodiodes (PDs), AlGaN absor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::332efd162c3fea7477d0fc66ae99b72b
https://doi.org/10.1117/12.2324279
https://doi.org/10.1117/12.2324279
Autor:
Cheol Ho Kim, Bumman Kim, Junghwan Son, Seunghoon Jee, Juyeon Lee, Junghwan Moon, Seokhyeon Kim
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 63:2802-2810
A power amplifier (PA) for a femto-cell base station should be highly efficient and small. The efficiency for amplification of a high peak-to-average power ratio (PAPR) signal is improved by designing an asymmetric Doherty power amplifier (DPA). From
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cfc718686e4a770ff41f11d80277158
https://doi.org/10.1109/tmtt.2015.2442973
https://doi.org/10.1109/tmtt.2015.2442973
Autor:
G.-S. Shin, Choul-Young Kim, Junghwan Son, Chul Woo Byeon, Seong-Wook Choi, Lee Juyeong, J.-S. Kim, H.-M. Oh
Publikováno v:
Electronics Letters. 52:665-667
A 60 GHz improved IIP3 double-pole double-throw (DPDT) switch using body and gate floated multi-stack resonator implemented in 65 nm CMOS technology is presented. To improve the IIP3, multi-stack and resistive body-floating techniques are used. To de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d87d558787b8338fa20f2c012339cab
https://doi.org/10.1049/el.2015.4357
https://doi.org/10.1049/el.2015.4357
Publikováno v:
Clinics in Orthopedic Surgery; Mar2020, Vol. 12 Issue 1, p49-54, 6p
Autor:
Bumman Kim, Byungjoon Park, Jungjoon Kim, Jooseung Kim, Junghwan Son, Dongsu Kim, Yunsung Cho
Publikováno v:
IEEE Microwave Magazine. 14:68-81
As mobile communication systems evolve to handle higher data rates, their modulation schemes only become more complicated, generating signals with large bandwidth and high peak-to-averagepower ratio (PAPR). To amplify such signals with high efficienc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b159c27eea7686066457af9c1b74cc04
https://doi.org/10.1109/mmm.2013.2240851
https://doi.org/10.1109/mmm.2013.2240851
Autor:
Seoung Bum Kim, Junghwan Son
Publikováno v:
Journal of Korean Institute of Industrial Engineers. 38:191-197
2001).분류와 예측은 종속변수에 대한 미래의 값을 예측한다는 점에서 공통된 목적을 가지고 있으나 종속변수가 범주형이면 분류, 연속형이면 예측으로 나눌 수 있다. 군집은 종속변수 없이
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4826baa734c0bb4d1beb3c99a8317a11
https://doi.org/10.7232/jkiie.2012.38.3.191
https://doi.org/10.7232/jkiie.2012.38.3.191
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 59:3463-3473
A multimode/multiband envelope tracking (ET) transmitter consisting of a hybrid switching amplifier (HSA) and a broadband saturated power amplifier (PA) is developed for operation across 1.3 to 2.7 GHz. For the various standard signals with different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f6d01c0fa4f55a7ea7c0a1b4d7d492b
https://doi.org/10.1109/tmtt.2011.2170580
https://doi.org/10.1109/tmtt.2011.2170580
Publikováno v:
Electronics Letters. 50:1299-1301
The Doherty power amplifier has the most attractive architecture to improve the efficiency for amplifying a signal with a high peak-to-average power ratio. However, the ideal Doherty operation is difficult to be achieved because the g m of the peakin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::963664fddefe9238c775446278828330
https://doi.org/10.1049/el.2014.2214
https://doi.org/10.1049/el.2014.2214
Publikováno v:
IEEE Microwave and Wireless Components Letters. 24:185-187
This letter presents a broadband saturated power amplifier (PA) using the harmonic control circuits for base station application. The saturated PA has advantages for broadband operation with high efficiency due to the large tolerance of the second ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ed94e9e85f843831bb09b722b18941b
https://doi.org/10.1109/lmwc.2013.2292925
https://doi.org/10.1109/lmwc.2013.2292925
Publikováno v:
The Journal of Korean Institute of Electromagnetic Engineering and Science. 20:813-822
We have investigated operation of a 1:2:2 asymmetric 3-stage Doherty PA(Power Amplifier) and implemented using the Freescale`s 4 W, 10 W PEP LDMOSFETS at 1 GHz. By employing the three peak efficiency characteristics, compared to the two peak N-way Do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::102acb860b88176319a13ae7022931ce
https://doi.org/10.5515/kjkiees.2009.20.8.813
https://doi.org/10.5515/kjkiees.2009.20.8.813