Published and presented at the 2005 IEPC, 2009 IEPC, and pending publication to the AIAA Journal of Propulsion and Power, this paper details the work to develop the smallest possible RF ion thruster. At the time of the IEPC 2009 conference, it was the smallest functional RF ion thruster in the world and the smallest ever produced at the SSPL at PSU. Stable operation, reliable ignition, consistent performance over an increased range, and notable efficiency were all achieved. Comprehensive performance analysis was completed in preparation for a system level qualification. The paper was well received at the IEPCs and the associated thesis work was awarded the 2009 Wolk Thesis Award from PSU. Thomas Trudel (Lead R&D Eng. and Founder) was the lead researcher on the project for 3 years.