This thesis investigates both theoretical and implementation-level aspects of switching-
feedback control strategies for the development of voltage-controlled oscillators. We
use a modified sliding-mode compensation scheme based on various norms of the
system state to achieve amplitude control for wide-tuning range oscillators. The
proposed controller provides amplitude control at minimal cost in area and power
consumption. Verification of our theory is achieved with the physical realization of
an amplitude controlled negative-Gm LC oscillator. A wide-tuning range RF ring
oscillator is developed and simulated, showing the effectiveness of our methods for
high speed oscillators. The resulting ring oscillator produces an amplitude controlled
sinusoidal signal operating at frequencies ranging from 170 MHz to 2.1 GHz. Total
harmonic distortion is maintained below 0:8% for an oscillation amplitude of 2 Vpp
over the entire tuning range. Phase noise is measured as -105.6 dBc/Hz at 1.135 GHz
with a 1 MHz offset.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/5767 |
| Date | 17 September 2007 |
| Creators | Marquart, Chad A. |
| Contributors | Zourntos, Takis |
| Publisher | Texas A&M University |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | 1506886 bytes, electronic, application/pdf, born digital |
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