Julian Bartow Willingham

Title: The Innovations of Julian Bartow Willingham

Introduction

Julian Bartow Willingham is a notable inventor based in Melbourne, Florida. He holds a total of 7 patents that showcase his contributions to the field of telecommunications. His work primarily focuses on enhancing the accuracy and efficiency of cellular communication systems.

Latest Patents

One of Willingham's latest patents is titled "Geolocation of cellular phone using supervisory audio tone transmitted from single base station." This invention aims to geolocate a wireless communication device, such as a cellular phone, that initiates a 911 call. The process involves a base station transceiver transmitting a supervisory audio tone (SAT), which is then looped back by the calling cellular phone. By correlating the returned SAT signals with those transmitted, the range of the cellular phone can be determined. Additionally, incoming signals from the cellular phone are received by a phased array antenna, which processes the angle of arrival to ascertain the direction of the cellular phone relative to the base station. This innovative approach allows for accurate geolocation of the device.

Another significant patent by Willingham is the "Base station hand-off mechanism for cellular communication system." This invention introduces a channel hand-off control mechanism that utilizes the same channels for communication between base stations and mobile transceivers. As a mobile transceiver moves between cells, the system locates it relative to the base stations, enabling the acquiring base station to establish a narrowbeam channel during hand-off. Each base station employs a phased array antenna, which helps minimize interference and reduces frequency reuse distance.

Career Highlights

Throughout his career, Julian Bartow Willingham has worked with prominent companies such as Harris Corporation and Harris Communication. His experience in these organizations has significantly contributed to his expertise in telecommunications and innovation.

Collaborations

Willingham has collaborated with notable individuals in the field, including Robert C. Hildebrand and Gayle Patrick Martin. These collaborations have further enriched his work and innovations in telecommunications.

Conclusion

Julian Bartow Willingham's contributions to the field of telecommunications through his patents and career achievements highlight his role as an influential inventor. His innovative approaches to geolocation and communication systems continue to impact the industry positively.