Master Clock Vibration-Isolation Technology Improvements for Aircraft Avionics

The objective of this proposal is to demonstrate the feasibility of a vibration suppression technology tailored for crystal oscillator applications called the integrated vibration isolator for Quartz (IVIQ). Vibration is an important factor for Quartz timing applications since vibration causes significant phase noise which reduces the bandwidth in communications systems, compromises slow speed detection in radar systems and can significantly reduce the oscillator"s frequency accuracy particularly in high frequency applications. Current state of the art vibration isolation systems are large and very expensive. In contrast, the IVIQ technology will consists of a micromachined vibration isolator where heaters and temperature sensors are integrated onto the vibration isolator for oven control. Commercial accelerometers will also be mounted into the system in a configuration which will allow for very precise compensation. We are targeting a total package size of 2 2 0.3 cm3 and at cost of around $200/unitmore than 100 times smaller and 10 times less expensive than current state of the art systems. Furthermore, integrated shock stops will be integrated into the fabrication process which limits the deflection of the platforms making them robust to shock.