Results 241 to 250 of about 375,340 (303)

Improved standard cell synthesizable Digitally Controlled Oscillator

2015 23nd Signal Processing and Communications Applications Conference (SIU), 2015
A novel Digitally Controlled Oscillator (DCO) architecture adjusting driving strength rather than capacitance for coarse and fine tuning in ring oscillator architectures has been proposed with full digital design flow as part of an effort to fully digitize All Digital Phase Locked Loops (ADPLL).
Yalcin Balcioglu, Gunhan Dundar
openaire   +1 more source

A Fully Digital Numerical-Controlled-Oscillator

2003
A 3.3V, 0.8 mW programmable Numerical Controlled oscillator Oscillator (NCO) core is designed in 0.6 micron CMOS process and its prototype design is mapped on an Altera MAX9400 CPLD. This architecture is suitable for digital wireless transceivers that use different bands for transmit and receive modes, such as GSM and DECT. Linearity and phase noise of
S. R. Abdollahi, B. Bakkaloglu, S. K. Hosseini   +2 more
openaire   +1 more source

All-digital PLL using bulk-controlled varactor and pulse-based digitally controlled oscillator

Analog Integrated Circuits and Signal Processing, 2011
This work presented a 150---450-MHz, all-digital phase-locked loop (ADPLL) implemented in a 0.18 μm CMOS process. The design utilizes bulk-controlled varactor and pulse-based digitally controlled oscillator (PB-DCO) providing a high timing resolution and a good jitter performance.
Hong-Yi Huang, Jen-Chieh Liu
openaire   +1 more source

An all-digital programmable digitally-controlled-oscillator (DCO) for digital wireless applications

2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353), 2003
A programmable digitally controlled oscillator (DCO) core is mapped on an Altera MAX9400 CPLD that can be used for clock recovery circuit of a 2.4-19.2 Kb/sec Gaussian Minimum Shift Keying (GMSK) demodulator. This architecture is suitable for digital wireless transceivers that use different bands for transmit and receive modes, such as GSM and DECT ...
S.R. Abdollahi, S. Kiaei, B. Bakkaloglu, S.M. Fakhraie, R. Anvari, S.E. Abdollahi   +5 more
openaire   +1 more source

Spacecraft Ranging from a Ground Digitally Controlled Oscillator

Journal of Spacecraft and Rockets, 1975
Range measurements to the Pioneer 10 and Mariner 10 spacecraft were made, without the use of a ranging system per se, by using the Jet Propulsion Laboratory Deep Space Network's new digitally controlled oscillator (DCO) device. These measurements were accomplished by controlling the linear ramps of the transmitted carrier frequency with a recently ...
Anthony Liu, Gerald Pease
openaire   +1 more source

A digitally controlled oscillator constructed using adjustable resistors

2001 Southwest Symposium on Mixed-Signal Design (Cat. No.01EX475), 2002
Controlled oscillators have a significant impact on clock distribution in high-frequency microprocessors. This paper describes a novel digitally controlled oscillator (DCO) constructed using adjustable resistors. Its ping-pong architecture significantly reduces the jitter introduced when the control input is updated.
M. Saint-Laurent, G.P. Muyshondt
openaire   +1 more source

5.3 A 95µW 24MHz digitally controlled crystal oscillator for IoT applications with 36nJ start-up energy and >13× start-up time reduction using a fully-autonomous dynamically-adjusted load

IEEE International Solid-State Circuits Conference, 2017
Wireless sensor nodes (WSN) in IoT applications (e.g., Bluetooth Low Energy, BLE) rely on heavily duty-cycling the wireless transceivers to reduce the overall system power consumption [1]. This requires swift start-up behavior of the transceiver.
M. Ding, Yao-Hong Liu, Yan Zhang, Chuang Lu, P. Zhang, B. Busze, Christian Bachmann, K. Philips   +7 more
semanticscholar   +1 more source

A novel 14-bit digitally controlled ring oscillator

2012 Japan-Egypt Conference on Electronics, Communications and Computers, 2012
A novel 14-bit digitally controlled ring oscillator is designed in 0.18 µm CMOS technology. Sub-feedback technique is used to increase the output frequency that produces stable oscillation with even number of stages. Frequency can be tuned from 674 MHz to 4 GHz. Phase noise at 4 GHz carrier frequency and 4 MHz offset is −119.4dBc/Hz.
P. Nugroho, R. K. Pokharel, A. Anand, H. Kanaya, K. Yoshida   +4 more
openaire   +1 more source

Spur-reduced numerically-controlled oscillator for digital receivers

[1992] Conference Record of the Twenty-Sixth Asilomar Conference on Signals, Systems & Computers, 2003
A technique involving phase dithering that reduces the complexity of numerically controlled oscillators (NCOs) is presented. Spurious magnitudes due to finite word-length effects in phase representation are accelerated from the usual -6 dBc per phase bit to -12 dBc per phase bit. This is at the expense of a small increase in system noise.
G.A. Zimmerman, M.J. Flanagan
openaire   +1 more source

Development of a digitally controlled rubidium atomic oscillator

44th Annual Symposium on Frequency Control, 2002
A digitally controlled rubidium oscillator (DCRO) which can synchronize another frequency source is described. A+or-3*10/sup -8/ wide frequency control range which has good linearity, and a 1*10/sup -12/ fine control step are highlighted. A synthesizer which has three stage phase locked loop oscillators with variable frequency dividers is discussed ...
N. Ishihara, S. Fukugawa, S. Kodama, T. Makabe   +3 more
openaire   +1 more source