Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"Digital Delay"”.
-
Quasi-real time translation of morse-coded signals using digital delay processing.
… available decoder are made and evaluated. The delay algorithm presented is based upon the attributes of a human operator and is implemented using integrated circuit static shift registers.
-
(VDL)² : a jitter measurement built-in self-test circuit for phase locked loops
… The (VDL)2, which stands for Variable Vernier Digital Delay Locked Line, implements both cycle-to-cycle and phase jitter measurements, by using a digital delay locked loop and a 60 stage Vernier delay line. This achieves a nominal jitter resolution of 10 ps with a capture range of +/- 150 ps …
-
Design of a step-down DC-DC controller integrated circuit with adaptive dead-time control
… dead-time control circuitry is implemented as digital delay-locked loop with digital counters as memory elements. In periodic steady state, the switch is controlled to turn on exactly when the body diode starts to conduct current. The conduction loss through MOSFET switch body diode is …
-
Microcontroller (MCU) Based Simplified Optimal Trajectory Control (SOTC) for High-Frequency LLC Resonant Converters
… and short circuit protection. Additionally, digital controllers are gradually taking the place of analog controllers in the control of the LLC resonant converter due to the advantages of the digital controllers over the analog controllers, such as their ability to be flexible and …
-
An introduction to linear time-variant digital filtering of seismic data
… dissertation is to introduce linear time-variant digital filters as a technique for the filtering of seismic data. Methods of characterizing linear time-variant digital filters are discussed in general terms. The advantages of the different impulse and frequency responses are cited. In addition, …
-
Digital Control for Power Factor Correction
… the study, implementation and improvement of a digital controller for a power factor correction (PFC) converter. The development of the telecommunications industry and the Internet demands reliable, cost-effective and intelligent power. Nowadays, the telecommunication power systems have output …
-
GaN Device Characterization, Converter Optimization and Development for Enhanced Aviation Systems
… the phase-leading problem caused by the digital delay is greatly reduced and proven in 800Hz line frequency. The THD can meet the standard by doubling the sampling frequency and improving sensing. The EMI performance also meets the requirement with a one-stage filter at ac side and a …
-
DEGENERATE SECOND ORDER NONLINEAR OPTICAL SPECTROSCOPY OF CHIRAL WEYL SEMIMETALS
… low power laser diodes, a laser diode pulser, a digital delay generator, and a data acquisition card. The RA-SHG technique was applied to the chiral Weyl semimetal RhSi, where a spectrum of the sole SHG tensor element χ(2) i jk was measured over the unprecedented 0.275-1.5 eV incoming photon …
-
Design of energy-efficient high-speed wireline transceiver
… proposed phase calibration method uses a single digital delay-locked loop (DLL) for calibrating all the phases, which makes the calibration process insensitive to the supply voltage level. Thanks to this technique, the proposed multi-Gb/s transceiver operates robustly and energy-efficiently at a …
-
Modeling and Design of Digitially Controlled Voltage Regulator Modules
It can be expected that digital controllers will be increasingly used in low voltage, high-current and high frequency voltage regulator modules (VRMs) where conventional analog controllers are currently preferred because of the cost and performace reasons. However, there are still remaining two …