This inventor holds 5 USPTO granted patents and 1 published patent application. Top assignees: International Business Machines Corporation, Tahoe Rf Semiconductor, Inc., Other. Active years: 1998-2016.
Location History:
- Seattle, WA (US) (1998)
- Auburn, CA (US) (2001 - 2016)
Company Filing History:
2 out of 166,209 
2 out of 3 
1 out of 834,350 Years Active: 1998-2016
Title: The Innovations of Darrell Lee Livezey
Introduction
Darrell Lee Livezey is a notable inventor based in Auburn, CA (US). He has made significant contributions to the field of radio frequency technology, holding a total of 5 patents. His work focuses on enhancing the performance of RF receivers, particularly in the presence of interference signals.
Latest Patents
One of Livezey's latest patents is titled "Simultaneous accommodation of a low power signal and an interfering signal in a radio frequency (RF) receiver." This innovative method involves providing a highly linear front end in an RF receiver and implementing a high Effective Number of Bits (ENOB) Analog to Digital Converter (ADC) circuit. The method allows for the sampling of input signals at frequencies that do not coincide with desired signal components, effectively eliminating spurs within the data bandwidth of the RF receiver. This approach enables the simultaneous accommodation of both desired and interference signal components, enhancing the dynamic range of the receiver.
Another significant patent is "Automatic gain control with programmable attack and decay times." This invention features a transconductance comparator that senses the amplitude of the output from a Variable Gain Amplifier (VGA) and generates an error signal based on this input. The transconductance amplifier then produces an output current, allowing for programmability of attack and decay times during automatic gain control of the VGA. This innovation addresses offset errors due to mismatches in current limits, improving the overall performance of the system.
Career Highlights
Throughout his career, Darrell Livezey has worked with prominent companies, including IBM and Tahoe RF Semiconductor, Inc. His experience in these organizations has contributed to his expertise in RF technology and innovation.
Collaborations
Livezey has collaborated with notable individuals in the field, including Jonathan Lee Kennedy and Michael Joseph Shaw. These partnerships have likely fostered a creative environment that has led to the development of his innovative patents.
Conclusion
Darrell Lee Livezey's contributions to the field of radio frequency technology are significant and impactful. His innovative patents demonstrate his expertise and commitment to advancing technology in this area.