Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Kun-Seok Lee"'
Autor:
Kun-seok Lee
Publikováno v:
THE JOURNAL OF HUMANITIES STUDIES. 128:131-160
Autor:
Chang-Ho Lee, J.S. Kenney, Kyu Hwan An, Kun-Seok Lee, Hamhee Jeon, Youngchang Yoon, Ockgoo Lee, Hyungwook Kim, Kevin W. Kobayashi
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 61:890-901
A novel feedback bias technique for a multistage cascode topology is developed to improve the linearity and reliability of power amplifiers (PAs). Due to the large parasitic capacitance and low substrate resistivity of CMOS technology, signal swings
Autor:
Philip Godoy, Xiang Li, Wanghua Wu, Fan Zhang, Qiang Zhu, Yuan Fang, Erdem Serkan Erdogan, Ovidiu Carnu, Wai Lau, Mohammad Hajirostam, Arvind Anumula Paramanandam, David Cousinard, Daibashish Gangopadhyay, Li Lin, Hao Li, Norman Liu, Timothy Loo, Liwei Sheng, Jiexi Liu, Weiwei Xu, Haisong Wang, Renaldi Winoto, Alden Wong, Kun-Seok Lee, Arnab Mitra, Xingliang Zhao, Ashkan Olyaei, Xiaoang Li, Xiang Gao, Anuranjan Jha, Ka Wo Pang, Xiaoyue Wang, Derek Cheung, Randy Tsang, Luns Tee, Donghong Cui
Publikováno v:
ISSCC
The 2×2 wireless LAN (WLAN) + Bluetooth (BT) combo chip continues to be the most versatile product category in the wireless connectivity space. It finds usage in a wide range of applications, such as laptops, tablets, high-end smartphones, gaming co
Publikováno v:
IEEE Journal of Solid-State Circuits. 47:2019-2032
A triple-mode class-AB balanced linear power amplifier (PA) is realized in standard 0.18-μm CMOS technology. For the average efficiency enhancement, the triple-mode operation realizes a switched-quadrature coupler with a balanced topology to achieve
Publikováno v:
Nano Letters. 12:2233-2237
The widespread commercialization of dye-sensitized solar cells (DSSCs) remains limited because of the use of highly volatile liquid electrolytes. Recently, gel-type quasi-solid electrolytes containing a polymer additive or inorganic nanomaterial have
Publikováno v:
ChemSusChem. 5:379-382
Typically, DSSCs are composed of a mesoporous titaniananocrystal electrode on a transparent conductive oxide (TCO)substrate with ruthenium-based sensitizers on the titania nano-crystals, platinum on the TCO substrate as a counter electrode,and iodine
Publikováno v:
Journal of Electrochemical Science and Technology. 1:81-84
In dye-sensitized solar cells (DSSCs), the back transfer of photo-generated electrons from FTO glass to triiodide ions in an electrolyte is an important loss mechanism, which leads to low cell efficiency. Recently, this back electron transfer was gre
Autor:
Kyu Hwan An, Songcheol Hong, Ockgoo Lee, Dong Ho Lee, Jeonghu Han, Chang-Ho Lee, Kun-Seok Lee
Publikováno v:
IEEE Journal of Solid-State Circuits. 45:2184-2197
A cascode configuration in class-E CMOS power amplifiers (PAs) provides high reliability with respect to breakdown considerations. However, it causes a power loss due to the slow transition of a common-gate device from the triode region to the cut-of
Autor:
Edwin Chan, Arvind Anumula Paramanandam, Kun-Seok Lee, Luns Tee, Norman Liu, Li Lin, Anuranjan Jha, Xiang Gao, Wanghua Wu
Publikováno v:
ISSCC
The fast adaptation of WiFi 802.11ac 256-QAM mode requires RF clocks with very low integrated phase error to deliver good EVM performance. On the other hand, smaller area and lower power are always desired for lower cost and longer battery life. This
Publikováno v:
Current Applied Physics. 5:259-264
A fully integrated fractional-N frequency synthesizer (FNFS) in 0.5 μm SiGe BiCMOS technology is implemented. To cover wideband frequency operation, a switched capacitor bank LC tank VCO and an Adaptive Frequency Calibration (AFC) technique are used