I initially had decided to use a DSC1001-series MEMS oscillator because they seem to be a common, fairly priced series of MEMS-based clocks. However, the absolute maximum ratings of having a minimum load resistance of 10kΩ, and a maximum capacitance of 15pF, was a significant design constraint. I searched for amplifiers, transistors, buffers, drivers, etc. to turn the high impedance signal into one that could be filtered, however these constraints were such that it was difficult to tell if any of the components that I had selected would actually function well with it. With some additional research, I stumbled upon the SiT9365 differential oscillator, which is better-suited to this application to begin with. Having a 30mA output current is much more flexible and conducive to a practical usage of this part as the local oscillator, but the supply current draw is, at the same time, significantly greater, posing a greater challenge for the solar power system.