Tactical miniature crystal oscillator

The intended use for the Tactical Miniature Crystal Oscillator (TMXO) is as a reference frequency source in advanced tactical communications systems and in time ordered navigational systems. This effort, conducted in 2 phases, was a continuation by the authors of a previous study which defined particular problem areas. The TMXO as configured in this effort is an evacuated enclosure containing a thermal insulating pedestal, a vacuum sealed hybrid microcircuit and a precision quartz crystal unit. Phase 1 utilized chip and wire microelectronic construction and a custom crystal unit in a metallic enclosure approximating the thermal characteristics of the new ceramic flatpack enclosed crystal unit in development. Phase 2 used thick film technology in conjunction with early developmental ceramic enclosed crystal units. This final report includes all the work of phases 1 and 2.