Company Filing History:
3 out of 4 
1 out of 25 
1 out of 3 Years Active: 1988-1994
Title: Innovations of Stephen C. Cripps
Introduction
Stephen C. Cripps is a notable inventor based in Sunnyvale, California. He holds five patents that showcase his contributions to the field of radio frequency technology. His work has significantly impacted the efficiency and performance of RF power amplifiers and sensors.
Latest Patents
One of his latest patents is for a high-efficiency RF power amplifier. This invention features a control network that operates a GaAs FET with a quiescent current closer to the maximum output current than to zero current. The output network couples the FET to the load, characterized by low impedance at a fundamental frequency and high impedance at the second harmonic frequency. This design allows the peak voltage on the output terminal to exceed two times the supply voltage. Additionally, a preamplifier raises the input signal level, ensuring it has a positive voltage peak when applied to the input terminal. This innovation enhances the output current, producing voltage spikes several times the DC voltage.
Another significant patent is for an RF power sensor that offers improved linearity over a greater dynamic range. This sensor utilizes multiple series-connected diodes to detect the power of an input RF signal, providing an output voltage that represents that power. The design reduces the dependency on input signal power levels, resulting in more predictable and linear power detection across a broader range of input RF signal power.
Career Highlights
Throughout his career, Stephen has worked with several companies, including Celeritek and Pacific Monolithics. His experience in these organizations has contributed to his expertise in RF technology and innovation.
Collaborations
Stephen has collaborated with notable individuals in the field, including Thomas R. Allen and John R. Anderson. Their combined efforts have further advanced the development of RF technologies.
Conclusion
Stephen C. Cripps is a distinguished inventor whose work in RF technology has led to significant advancements in efficiency and performance. His patents reflect his innovative spirit and dedication to improving technology in this field.