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Quan Le

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Papers by Quan Le

Research paper thumbnail of A CMOS burst-mode optical transmitter for 1.25Gb/s ethernet PON applications

IEEE Transactions on Circuits and Systems Ii-express Briefs, 2005

Research paper thumbnail of A burst-mode receiver for 1.25Gb/s ethernet PON with AGC and internally created reset signal

IEEE Journal of Solid-state Circuits, 2004

Research paper thumbnail of Energy-Efficient Low-Complexity CMOS Pulse Generator for Multiband UWB Impulse Radio

IEEE Transactions on Circuits and Systems I-regular Papers, 2008

Abstract—This paper presents an energy-efficient low-complexity pulse generator design technique ... more Abstract—This paper presents an energy-efficient low-complexity pulse generator design technique for multiband impulse radio ultra-wideband (IR-UWB) system in 0.18-µm CMOS technology. The short pulses are generated based on the ON/OFF switching operation of an oscillator ...

Research paper thumbnail of A CMOS Burst-Mode TIA with Step AGC and Selective Internally Created Reset for 1.25Gb/s EPON

A selective internal reset mechanism that allows the burst-mode TIA to recover a burst-mode signa... more A selective internal reset mechanism that allows the burst-mode TIA to recover a burst-mode signal as a stand-alone device in EPON is discussed. Using step AGC, the TIA achieves a DR of 27dB and a sensitivity of -31dBm with a PIN photodiode. Moreover, with internal reset, the loud/soft ratio is also 27dB within 100ns guard and preamble times.

Research paper thumbnail of A 95dB linear low-power variable gain amplifier

IEEE Transactions on Circuits and Systems I-regular Papers, 2006

... Quoc-Hoang Duong, Student Member, IEEE, Quan Le, Student Member, IEEE, Chang-Wan Kim, Student... more ... Quoc-Hoang Duong, Student Member, IEEE, Quan Le, Student Member, IEEE, Chang-Wan Kim, Student ... In cellular wireless communication systems, the amplitude of the receiver and transmitter signals varies ... at least 80 dB of dynamic gain variation and splits into RF and IF ...

Research paper thumbnail of Burst-Mode Transmitter for 1.25Gb/s Ethernet PON Applications

Research paper thumbnail of Integrated Differential Preamplifier for 155Mb/S ATM-PON system with Fast Response, High Sensitivity and Wide Dynamic Range

This paper proposes a new preamplifier topology on 0.35µm CMOS process for OLT receiver in 155Mb/... more This paper proposes a new preamplifier topology on 0.35µm CMOS process for OLT receiver in 155Mb/s ATM- PON system. The preamplifier consists of transimpedance and limiting amplifiers. It has a unique combination of features including differential outputs with negligible offset; low input referred noise current density of 1.6pa/√Hz; high loud/soft ratio of more than 26dB; high maximum input power level

Research paper thumbnail of A CMOS burst-mode optical transmitter for 1.25Gb/s ethernet PON applications

IEEE Transactions on Circuits and Systems Ii-express Briefs, 2005

Research paper thumbnail of A burst-mode receiver for 1.25Gb/s ethernet PON with AGC and internally created reset signal

IEEE Journal of Solid-state Circuits, 2004

Research paper thumbnail of Energy-Efficient Low-Complexity CMOS Pulse Generator for Multiband UWB Impulse Radio

IEEE Transactions on Circuits and Systems I-regular Papers, 2008

Abstract—This paper presents an energy-efficient low-complexity pulse generator design technique ... more Abstract—This paper presents an energy-efficient low-complexity pulse generator design technique for multiband impulse radio ultra-wideband (IR-UWB) system in 0.18-µm CMOS technology. The short pulses are generated based on the ON/OFF switching operation of an oscillator ...

Research paper thumbnail of A CMOS Burst-Mode TIA with Step AGC and Selective Internally Created Reset for 1.25Gb/s EPON

A selective internal reset mechanism that allows the burst-mode TIA to recover a burst-mode signa... more A selective internal reset mechanism that allows the burst-mode TIA to recover a burst-mode signal as a stand-alone device in EPON is discussed. Using step AGC, the TIA achieves a DR of 27dB and a sensitivity of -31dBm with a PIN photodiode. Moreover, with internal reset, the loud/soft ratio is also 27dB within 100ns guard and preamble times.

Research paper thumbnail of A 95dB linear low-power variable gain amplifier

IEEE Transactions on Circuits and Systems I-regular Papers, 2006

... Quoc-Hoang Duong, Student Member, IEEE, Quan Le, Student Member, IEEE, Chang-Wan Kim, Student... more ... Quoc-Hoang Duong, Student Member, IEEE, Quan Le, Student Member, IEEE, Chang-Wan Kim, Student ... In cellular wireless communication systems, the amplitude of the receiver and transmitter signals varies ... at least 80 dB of dynamic gain variation and splits into RF and IF ...

Research paper thumbnail of Burst-Mode Transmitter for 1.25Gb/s Ethernet PON Applications

Research paper thumbnail of Integrated Differential Preamplifier for 155Mb/S ATM-PON system with Fast Response, High Sensitivity and Wide Dynamic Range

This paper proposes a new preamplifier topology on 0.35µm CMOS process for OLT receiver in 155Mb/... more This paper proposes a new preamplifier topology on 0.35µm CMOS process for OLT receiver in 155Mb/s ATM- PON system. The preamplifier consists of transimpedance and limiting amplifiers. It has a unique combination of features including differential outputs with negligible offset; low input referred noise current density of 1.6pa/√Hz; high loud/soft ratio of more than 26dB; high maximum input power level

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