Intellectual Property - M-SAC Compensation Methodology

Intellectual Property - M-SAC Compensation Methodology from Esterline Research & Design

By: Esterline Research & Design  06/07/2016
Keywords: Cots, crystal oscillator consulting, DOCXO,

Esterline Research and Design's research team, addresses the difficult problems encountered in the frequency control industry, and develops solutions for the improvement of time bases. With an extensive background in the high precision quartz oscillator industry our engineering team focuses on the mitigation and compensation of environmental factors that degrade oscillator performance. Our intellectual property can combat effects such as temperature, trim effect, thermal hysteresis, acceleration sensitivity, pressure, warm-up, etc. Frequency Versus Temperature Compensation Our newest patent pending technology, provides a proven method for compensating oscillators for the frequency versus temperature, trim effect, and tuning linearity. This methodology can take the form of a discrete construction or is able to be miniaturized into a custom chip if desired. The method has been shown to be able to obtain DOCXO performance using a single Euro size OCXO. Trim Effect Compensation Our patent pending method has also demonstrated its superior curve fitting abilities in multi-dimensional space. Figures 2 shows the inherent normalized trim effect of a 5 mm x 7mm COTS VCXO. Using our patent pending M-SAC methodology the trim effect performance is improved to what is depicted in Figure 3. This compensation provides a VCXO that has +/-150ppm of pull with a temperature stability of +/-0.5 ppm over the entire pull range. Linearity Compensation Our method provides for the means to compensate for the tuning linearity of an oscillator. Figure 4 and 5 below show the inherent tuning linearity of a 5mm x 7mm COTS VCXO and the compensated performance respectively.

Keywords: Cots, crystal oscillator consulting, DOCXO, frequency compensation, Trim Effect,

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