Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Kin Keung Lee"'
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 62:1-9
A new current-mode bandgap reference circuit (BGR) which is capable of generating sub-1-V output voltage is presented. It has not only the lowest theoretical minimum current consumption among published current-mode BGRs, but also additional advantage
Autor:
Tor Sverre Lande, Kin Keung Lee
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 61:870-874
An impulse radio ultrawideband (IR-UWB) transmitter (TX) intended for long-range passive radio-frequency (RF) identification tags is presented. It is wirelessly powered by an ultrahigh-frequency (UHF) signal. A 128-bit pseudonoise code is transmitted
Autor:
Kin Keung Lee, Tor Sverre Lande
Publikováno v:
Progress In Electromagnetics Research C. 55:139-147
A low-power on-off-keying impulse-radio (IR) ultra-wideband (UWB) pulse generator (PG) intended for wireless-powered IR-UWB radio applications is presented. The proposed PG has high flexibility, the center frequency, output power and pulse-width (PW)
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 60:721-725
This brief presents a continuous-time impulse radio ultrawideband transmitter. The transmitter is a part of a high-precision ranging single-chip transceiver that measures the time-of-flight symbol propagation. The clock burst generator in the transmi
Publikováno v:
Analog Integrated Circuits and Signal Processing. 67:49-60
This paper presents the design of an ultra-low-power LC quadrature VCO (QVCO). It is designed in a single-poly seven-metal 65-nm CMOS process. Several aspects of state-of-the-art QVCO design are addressed, for example tank design and circuit topologi
Autor:
Kin Keung Lee, Tor Sverre Lande
Publikováno v:
NORCHIP
A low-power on-off-keying impulse-radio (IR) ultra-wideband (UWB) pulse generator (PG) operating at band group # 6 is presented. It is intended for IR-UWB radio applications. The IR signal is generated by utilizing the propagation delay of a delay-li
Publikováno v:
NORCHIP
UWB backscatter RFID systems require high quality clock signals and crystal oscillator is one of the few candidates. A study of a low-power parallel-mode crystal oscillator for such applications is presented. A 7.8125 MHz Pierce crystal oscillator is
Autor:
Tor Sverre Lande, Kin Keung Lee
Publikováno v:
MWSCAS
Analysis and design of nano-watt (nW) bandgap references (BGR) in nano-meter (nm) CMOS are presented. Three different BGR topologies are studied and design trade-offs are discussed. Based on the analysis results, a BGR is fabricated in a TSMC 90 nm C
Autor:
Kin Keung Lee, Tor Sverre Lande
Publikováno v:
MWSCAS
The demand for wireless-powered circuits are increasing rapidly, RFID and WSN are good examples. One of the most important components is the on-chip voltage rectifier. Research has been conducted intensively on the rectifier design, however not many