Walter J Grandfield

Title: Walter J Grandfield: Innovator in Radio Technology

Introduction

Walter J Grandfield is a notable inventor based in Lake Worth, Florida, with a remarkable portfolio of 10 patents. His contributions to radio technology have significantly advanced the field, particularly in the areas of signal processing and receiver design.

Latest Patents

Among his latest patents is a "Radio having a fast adapting direct conversion receiver." This invention features a direct conversion receiver capable of recovering a filtered baseband signal from a radio signal modulated with a baseband signal. The design includes a radio frequency mixer that converts the radio signal to the baseband signal, a lowpass amplifier that amplifies the baseband signal while attenuating higher frequency components, and a DC offset compensation section that provides both DC offset compensation and controlled highpass filtering. Another significant patent is the "Feed-forward RSSI assisted radio frequency amplifier power control." This selective call receiver includes a radio frequency amplifier with a controllable output power level. It utilizes a radio frequency level sensor to generate a signal in response to the input signal level, ensuring that the output power level remains stable even when the input signal approaches overload levels.

Career Highlights

Walter has had a distinguished career, working with prominent companies such as Motorola Corporation. His work has been instrumental in developing innovative technologies that enhance communication systems.

Collaborations

Throughout his career, Walter has collaborated with talented individuals, including Leonard E Nelson and Victoria A Leonardo. These partnerships have contributed to the successful development of his inventions.

Conclusion

Walter J Grandfield's innovative work in radio technology has made a lasting impact on the industry. His patents reflect a deep understanding of signal processing and receiver design, showcasing his expertise as an inventor.