Raymond L Fried

Title: Innovations of Raymond L Fried

Introduction

Raymond L Fried is a notable inventor based in Liberty Lake, WA (US). He has made significant contributions to the field of frequency modulation and signal generation, holding a total of 2 patents.

Latest Patents

One of his latest patents is focused on frequency modulation in phase-locked loops. This invention describes a phase-locked loop (PLL) frequency synthesizer that incorporates both an analog, out-of-band component path and a digital, in-band component path. This design allows for frequency modulation (FM) of the synthesized output signal. The in-band FM component is octave scaled by an analog scaling means and is coupled to an analog-to-digital converter. This setup provides a digital number that is added to the PLL divide number, enabling changes in the PLL frequency in response to the in-band FM signal. The out-of-band FM component is also scaled and summed with the PLL error signal to vary the PLL frequency. The equalization of scaling in both paths ensures a flat frequency response, while the in-band component is optimized to maintain a high signal-to-noise ratio.

Another significant patent by Fried is a fast frequency settling signal generator utilizing a frequency-locked loop. This signal generating apparatus includes a PLL that uses a voltage-controlled oscillator (VCO) and a frequency-locked loop (FLL) to produce an output signal with selectable frequency jumps. The design features a delay line discriminator that provides an error signal to compensate for FM noise in the VCO. The FLL stabilizes the center frequency of the VCO using the FM error signal, allowing for rapid frequency settling when switching to a new frequency. In a learn mode, the loop's gain parameters are determined and stored for multiple frequencies, enabling fast-switching signal generation.

Career Highlights

Raymond L Fried has had a distinguished career at Hewlett-Packard Company, where he has applied his expertise in signal processing and frequency modulation. His innovative work has contributed to advancements in communication technologies.

Collaborations

Fried has collaborated with notable colleagues, including Barton L McJunkin and Ben Flugstad, enhancing the impact of his inventions through teamwork and shared expertise.

Conclusion

Raymond L Fried's contributions to the field of frequency modulation and signal generation demonstrate his innovative spirit and technical prowess. His patents reflect a commitment to advancing technology and