Ulrich L. Rohde, N1UL, of Synergy Microwave Corp was invited to deliver the sixth Sir J.C. Bose Memorial Lecture at the IEEE Hyderabad Section on December 2 during a joint session of the IEEE MTT, AP, and EMC Societies in Hyderabad, India. Rohde’s talk was “Next Generation Networks: Software Defined Radio — Emerging Trends.” Click here to view a collection of slides used in the lecture.
While working under a US Department of Defense contract at RCA in 1982, Rohde’s department developed the first SDR, which used the COSMAC (Complementary Symmetry Monolithic Array Computer) chip. Introduced by RCA in early 1976, the RCA CDP1802 eight-bit CMOS microprocessor — a 40-pin LSI integrated circuit chip — was the company’s first single-chip microprocessor. Rohde was among the first to present publicly on this topic with his February 1984 talk, “Digital HF Radio: A Sampling of Techniques” at the Third International Conference on HF Communication Systems and Techniques in London.