Francis Giles Overbury

Title: The Innovations of Francis Giles Overbury

Introduction

Francis Giles Overbury is a notable inventor based in Great Dunmow, GB. He has made significant contributions to the field of telecommunications, holding a total of 5 patents. His work primarily focuses on methods and apparatuses that enhance mobile telecommunications systems.

Latest Patents

One of Overbury's latest patents is a position location method and apparatus for a mobile telecommunications system. In this invention, the position of a mobile station can be estimated in terms of its bearing and range from a cell site. A multi-element direction finding antenna at the cell site receives signals from the mobile station. A receiver circuit estimates the bearing using the relative phase of signals received at different antenna elements and estimates the range by measuring the round trip delay of signals to and from the mobile station. Motion of the mobile station can introduce errors into the bearing estimate due to frequency offset and frequency spread when element sampling is non-simultaneous. Compensation for these errors is introduced by using signal samples successively received at the same antenna element to estimate Doppler frequency offset and spread. Accurate calibration of the direction finding antenna and the receiver circuit is essential. This is achieved by injecting calibration signals into the circuit near the antenna or into the antenna itself from a near field probe. Other aspects of calibration, such as antenna position, are calibrated using a remote beacon. A beacon emulating a mobile station but at a fixed, known location, or a beacon at an adjacent cell site may be used.

Career Highlights

Overbury has worked with prominent companies in the telecommunications industry, including Nortel Networks Corporation and Northern Telecom Limited. His experience in these organizations has contributed to his expertise in mobile telecommunications.

Collaborations

Some of his notable coworkers include David Damian Nicholas Bevan and John Edward Hudson. Their collaboration has likely fostered innovative ideas and advancements in their respective fields.

Conclusion

Francis Giles Overbury's contributions to mobile telecommunications through his patents and collaborations highlight his importance as an inventor in this field. His work continues to influence the development of telecommunications technologies.