Dr. Walkenhorst is the CTO of Bastille where he leads R&D efforts to enhance product performance and add new capabilities. He has over 20 years of experience as a technology leader in RF systems and signal processing. Prior to Bastille, he led and executed R&D efforts at Lucent Bell Labs, GTRI, NSI-MI Technologies, Silvus Technologies, and Raytheon Technologies. His experience includes RF system design, communications systems, antenna design/testing, radar, software-defined radios, geolocation, and related topics. He has authored over 70 publications including papers, articles, and reports, has taught numerous graduate, undergraduate, and professional short courses, and has served as an expert witness on multiple occasions. He is a senior member of IEEE and has served as the Chair of the Atlanta Chapter of the IEEE Communications Society.