Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Hyo Sung Lee"'
Publikováno v:
IEEE Access, Vol 8, Pp 122986-122996 (2020)
A 26GHz up-conversion 3× sub-harmonic mixer is designed using a 65 nm CMOS process. The reasons for the lack of research on the 3× subharmonic mixer are investigated and a solution called a fundamental frequency rejection technique is presented. Th
Externí odkaz:
https://doaj.org/article/891a7fba13134046be75691dc7b3a723
Publikováno v:
PLoS ONE, Vol 14, Iss 5, p e0216474 (2019)
A 26-GHz transmitter front-end is designed using 65 nm CMOS technology. The double frequency conversion transmitter consists of an intermediate frequency(IF) mixer, an millimeter-wave(mm-wave) mixer, and a pre-power amplifier. A double quadrature arc
Externí odkaz:
https://doaj.org/article/c44f9682d6ad4698b4d389cafb3f0780
Publikováno v:
Applied Biochemistry and Biotechnology
Bee venom is a medicinal product that is widely used in traditional therapies owing to its excellent anti-inflammatory activity. However, the use of bee venom has shown adverse effects. Therefore, there is a need for research that can remove the cyto
Autor:
Sung-Hyun Cha, Hyo-Sung Lee
Publikováno v:
The Korean Association of General Education. 14:253-265
Publikováno v:
IEEE Access. 8:122986-122996
Publikováno v:
Korean Journal of Materials Research. 29:579-585
In this study, we investigate the effect of Al/N source ratios and growth rates on the growth and structural properties of AlN films on c-plane sapphires by plasma-assisted molecular beam epitaxy. Both growth rates and Al/N ratios affect crystal qual
Autor:
Jong Hee Hwang, Hyo-Sung Lee, Hyun Suk Jung, Mi Jai Lee, Dae-Woo Jeon, Tae-Young Lim, Jin Ho Kim, Byung-Ho Kim
Publikováno v:
Korean Journal of Materials Research. 26:22-28
In this study, we fabricated high quality color conversion component with green/red phosphor and low melting glass frit. The color conversion component was prepared by placing the green and red phosphor layer on slide glass via screen printing proces
Autor:
Jong Hee Hwang, Mi Jai Lee, Hyun Suk Jung, Tae-Young Lim, Jin-Ho Kim, Dae-Woo Jeon, Hyo-Sung Lee
Publikováno v:
Journal of the Korean Ceramic Society. 52:229-233
Currently, the majority of commercial white LEDs are phosphor converted LEDs made of a blue-emitting chip and YAG yellow phosphor dispersed in organic silicone. However, silicone in high-power devices results in long-term performance problems such as
Autor:
Soon-Ku Hong, Hyo Sung Lee, Byung Jun Ahn, Myoungho Jeong, Ju Ho Lee, Jung-Hoon Song, Dong Yeob Kim, Takafumi Yao, Jeong Yong Lee, Seok Kyu Han
Publikováno v:
Journal of Alloys and Compounds. 623:1-6
We report on the structural and optical properties of non polar a-plane MgxZn1−xO (0 ⩽ x ⩽ 0.57) films on r-plane sapphire substrates grown by plasma-assisted molecular beam epitaxy. Reflection high energy electron diffraction (RHEED) revealed
Autor:
Hyo-Sung Lee, Byung-Wook Min
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 62:1-5
A CMOS 4-bit phase shifter is designed for W-band applications using a 65-nm CMOS process. Switched-delay-type 90 $^{\circ}$ , 45 $^{\circ}$ , and 22.5 $^{\circ} $ 1-bit phase shifters are designed to have high power-handling capability using a signa