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.
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Showing 1 to 5 of 5 for “"crystal oscillator"”.
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Design Technique for Analog Temperature Compensation of Crystal Oscillators
For decades, the quartz crystal has been used for precise frequency control. In the increasingly popular field of wireless communications, available frequency spectrum is becoming very limited, and therefore regulatory agencies have imposed tight frequency stability requirements. There are …
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High-performance reference frequency generation techniques
… clocks at 4 times the frequency of a standard crystal oscillator (XO) output frequency. Using extensive digital correction techniques, a 216MHz reference clock with an integrated jitter of 77fsrms is generated from a 54MHz Pierce XO. A ring oscillator based injection locking clock multiplier …
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A new programmable low noise all digital phase-locked loop architecture
… PLL structures with on-chip voltage controlled oscillators using charge pumps and ring or LC oscillators. However, the problem with most on-chip VCO's is that they are far noisier than the external crystal types. The noise in the integrated oscillators forces designers to use larger loop …
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Next Generation Frequency Disturbance Recorder Design and Timing Analysis
… the accuracy and stability of the conventional crystal oscillator. To this end, a new method is introduced in close association with some prior work in generating accurate sampling time for FDR. Finally, a new method is introduced for modeling the FDR based on the sampling time measurements and …
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Ultra-sensitive Mid-infrared Detection Using Phononic Crystal Resonator-based Oscillator
… based on surface acoustic wave (SAW) phononic crystal (PnC) oscillators. By configuring a PnC resonator featuring high-frequency-quality-factor product into a low-noise self-oscillation system, my MIR detector achieves high sensitivity on the order of hundreds of picowatts. The SAW architecture …