Stephen W Redfern

Title: The Innovations of Stephen W Redfern

Introduction

Stephen W Redfern is a notable inventor based in Lincoln, GB. He is recognized for his contributions to the field of vehicle alarm systems, particularly through his innovative patent for a Doppler microwave sensor. His work has significantly impacted the way vehicle security systems operate.

Latest Patents

Stephen W Redfern holds a patent for a Doppler microwave sensor designed for vehicle alarms. This sensor employs a mixer stage and a signal-processing stage on a printed circuit board. The printed circuit board features a ground plane containing a slot antenna, which is coupled to the mixer stage. The ground plane is electrically connected to a conductive enclosure that houses the components of the mixer and signal-processing stages. A dielectric lens may be placed over the slot antenna to create a transmission beam pattern tailored to the specific vehicle. In a preferred embodiment, the mixer stage utilizes a self-oscillating mixer arrangement with a bipolar transistor as the active element, allowing a single antenna to transmit the oscillator signal and receive the Doppler-shifted return signal.

Career Highlights

Stephen W Redfern is associated with Plessey Semiconductors Limited, where he has contributed to various projects and innovations. His expertise in microwave sensor technology has positioned him as a valuable asset in the field of vehicle security systems.

Collaborations

Throughout his career, Stephen has worked alongside notable colleagues such as Paul A Tyson and Peter P Blunden. Their collaborative efforts have further advanced the development of innovative technologies in their respective fields.

Conclusion

Stephen W Redfern's contributions to the field of vehicle alarm systems through his patent for a Doppler microwave sensor exemplify his innovative spirit and technical expertise. His work continues to influence advancements in vehicle security technology.