Ralph Eschenbach serves as the President of Sand Hill Angels, Inc. and is also the Vice President and Chief Technology Officer at Trimble Navigation Ltd. He has held this position since 6/94. Before that he was Vice President of Avionics from 11/89. He joined Trimble in 1983 as Vice President of Engineering. Before joining Trimble he was Department Manager at Hewlett Packard labs, responsible for research in several areas of communication protocols and systems. It was at HP that he developed the first working GPS (Global Positioning System) receiver in 1976 that demonstrated the potential for addressing a low cost market for a positioning sensor.

Mr Eschenbach is also a venture partner at Osprey Ventures, L.P.

Mr. Eschenbach received his BSEE from UC Berkeley in 1968 and MSEE from Stanford University in 1970. He graduated Magna Cum Laude and was a member of Phi Beta Kappa.