Essays about: "voltage controlled oscillator"

Showing result 1 - 5 of 14 essays containing the words voltage controlled oscillator.

1. 1. Digitally Controlled Oscillator Topologies for mm-Wave Pulsed Coherent Radar

   University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

   Author : Klas Junskog; [2023]
   Keywords : oscillators; mm-wave; radar; Technology and Engineering;

   Abstract : The advancement of future generations of wireless communication and radar sensing warrants the need for mm-wave digitally controlled oscillators (DCOs) with high-frequency trade-offs in consideration. The purpose of this project is to investigate DCO topologies inspired from scientific literature. READ MORE

3. 2. Analysis of high-voltage low-current DC/DC converters for electrohydrodynamic pumps

   University essay from Uppsala universitet/Institutionen för elektroteknik

   Author : Sigge Axelsson; Jonas Gartner; Axel Stafström; [2023]
   Keywords : high-voltage; low-current; low-power; DC DC; DC-DC; high-gain; converter; electrohydrodynamic pump; EHD; transformerless converter; Royer-based converter; resonant Royer oscillator; Cockroft-Walton voltage multiplier; CWVM; voltage multiplier; series-connected positive-negative voltage multiplier; SPNVM; planar air-core transformer; planar transformer; high-freqency Royer-based converter; overcurrent protection; LT8331; gallium nitride; GaN; planar PCB-integrated transformers;

   Abstract : Moving parts cause vibrations and tend to wear out. In applications where maintenance is complicated, solutions without moving parts are therefore advantageous. Electrohydrodynamic pumps are such a solution. Instead of mechanical propulsion, they use strong electric fields to induce movement in a dielectric cooling liquid. READ MORE

4. 3. Temperature Compensation in CMOS Ring Oscillator

   University essay from Linköpings universitet/Elektroniska Kretsar och System

   Author : Xiaohua Wei; Dingyufei Zhang; [2022]
   Keywords : Current Starved Ring Oscillator CSRO ; Temperature compensation; Supply voltage compensation; Stable frequency; Digital controlling; Phase Frequency Detector PFD ; Dynamic comparator; Bidirectional counter; Charge pump CP ; Frequency divider; Power consumption; AMS 0.35 um; EDA tool Cadence;

   Abstract : A digital system is often required to operate under a specific frequency. A ring oscillator can be helpful in this circumstance because it can generate a signal with a specific frequency. However, a ring oscillator is also sensitive to the environment temperature. READ MORE

5. 4. Phase Locked Loops in Fully Integrated NB-IoT Transceivers

   University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

   Author : Adam Waks; [2018]
   Keywords : Phase locked loops; Narrow Band Internet of Things; Frequency pulling; Balun; Inductor; Technology and Engineering;

   Abstract : This thesis investigates how to fulfill the Narrow Band - Internet of Things (NB-IoT) specification for a fully integrated transceiver in the phase locked loop's (PLL) perspective. Designing a fully integrated transceiver, integrating a power amplifier (PA) is challenging as it leads to frequency pulling of the voltage controlled oscillator (VCO) in the PLL, deteriorating the performance. READ MORE

6. 5. Digitally Controlled Oscillator for mm-Wave Frequencies

   University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

   Author : Rikard Gannedahl; Johan Holmstedt; [2018]
   Keywords : RF; RFIC; oscillator; DCO; mm-wave; Technology and Engineering;

   Abstract : In the fifth generation of mobile communication, 5G, frequencies above 30 GHz, so-called millimeter-wave (mm-wave) frequencies are expected to play a prominent role. For the synthesis of these frequencies, the all-digital phase locked loop (ADPLL) has recently gained much attention. READ MORE