Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Hyunkyu Lee"'
Publikováno v:
IEEE Access, Vol 12, Pp 92787-92796 (2024)
This paper presents a D-band low-power sub-harmonic receiver fabricated in a 65-nm CMOS technology. A sub-harmonic mixing technique is adopted to minimize the local oscillator (LO) leakage and to relax the design challenge of LO source. The receiver
Externí odkaz:
https://doaj.org/article/066258d9e24c4dcb8c3438140bf3b88d
Autor:
Tae Jun Yang, Jung Rae Cho, Hyunkyu Lee, Hee Jun Lee, Seung Joo Myoung, Da Yeon Lee, Sung-Jin Choi, Jong-Ho Bae, Dong Myong Kim, Changwook Kim, Jiyong Woo, Dae Hwan Kim
Publikováno v:
IEEE Access, Vol 12, Pp 28531-28537 (2024)
Obtaining symmetrical and highly linear synapse weight update characteristics of analog resistive switching devices is critical for attaining high performance and energy efficiency of the neural network system. In this work, based on the two-terminal
Externí odkaz:
https://doaj.org/article/83132ecb329e4de7a490a76eceb416e7
Autor:
Dongsoo Jang, Chulwoo Ahn, Youngjun Lee, Seungjun Lee, Hyunkyu Lee, Donghoi Kim, Yongsun Kim, Ji‐Yong Park, Young‐Kyun Kwon, Jaewu Choi, Chinkyo Kim
Publikováno v:
Advanced Materials Interfaces, Vol 10, Iss 4, Pp n/a-n/a (2023)
Abstract Controllable growth and facile transferability of a crystalline film with desired characteristics, acquired by tuning composition and crystallographic orientation, become highly demanded for advanced flexible devices. Here the desired crysta
Externí odkaz:
https://doaj.org/article/b98b5f3c5cb749c797a1e60f54ec382b
Publikováno v:
BMC Ophthalmology, Vol 22, Iss 1, Pp 1-4 (2022)
Abstract Background We report a rare case of orbital subperiosteal hematoma associated with frontal and ethmoidal sinusitis. Common concerns involving the orbital subperiosteal space include abscess, hematoma and tumor. Case presentation A patient pr
Externí odkaz:
https://doaj.org/article/a04397ee2fa9457980e2626c269fc615
Publikováno v:
BMC Ophthalmology, Vol 22, Iss 1, Pp 1-5 (2022)
Abstract Background Carotid-cavernous fistula (CCF) is an abnormal communication between the cavernous sinus and the carotid arterial system and exhibits typical symptoms of red eye, diplopia, blurred vision, headache, and murmur. However, the sympto
Externí odkaz:
https://doaj.org/article/dd3d715af490462689b3914b20999184
Publikováno v:
BMC Ophthalmology, Vol 21, Iss 1, Pp 1-5 (2021)
Abstract To report the experience and advantageous effects of high-frequency radio wave electrocautery in modified Hotz operations for epiblepharon, We reviewed the records of all pediatric patients who underwent a modified Hotz operation with the us
Externí odkaz:
https://doaj.org/article/46044c3ed3f345378928fc382e25bbd8
Publikováno v:
Frontiers in Surgery, Vol 9 (2022)
We reviewed the medical records of 53 involutional entropion patients, who underwent lateral tarsal strip (LTS) with a minimal skin muscle excision by cauterization from March 2014 to December 2017, to evaluate the effectiveness and efficiency of LTS
Externí odkaz:
https://doaj.org/article/2e5223339ac24e76b1ca2c7c3c33a175
Autor:
Hyunkyu Lee, Sanggeun Jeon
Publikováno v:
IEEE Access, Vol 9, Pp 158420-158425 (2021)
This paper presents a balanced distributed drain mixer fabricated in a 0.25- $\mu \text{m}$ GaAs p-HEMT technology. The balanced distributed mixer combines two single-ended distributed mixers with an on-chip RF balun and LO divider integrated for imp
Externí odkaz:
https://doaj.org/article/d499278ff7854bd09040a95b3d1b77f6
Autor:
Jeeho Sim, SeongDae Gong, Geonwoo Kang, Mingyu Jang, Huisuk Yang, Jaesung Park, Youngchan Kim, Hyunkyu Lee, Hyunji Jung, Youseong Kim, Chansol Jeon, Hyeri Ahn, Minkyung Kim, Jaibyung Choi, Ho Lee, Hyungil Jung
Publikováno v:
Pharmaceutics, Vol 14, Iss 12, p 2804 (2022)
Topical liquid formulations, dissolving microneedles (DMNs), and microscale needles composed of biodegradable materials have been widely used for the transdermal delivery of active compounds for skincare. However, transdermal active compound delivery
Externí odkaz:
https://doaj.org/article/06ba470fa66140988dc20241a1f61111
Publikováno v:
Journal of the Korean Institute of Electromagnetic Engineering and Science, Vol 19, Iss 2, Pp 96-100 (2019)
A compact wideband crossover coupler with fully lumped elements is presented. To achieve a wideband operation, a three-section branch-line structure is employed for the crossover coupler. The size is significantly minimized by replacing transmission
Externí odkaz:
https://doaj.org/article/663f72f4c8104ba98f25f493501a6251