Arvid E Englund, Jr

Title: Arvid E Englund, Jr: Innovator in Radio Transceiver Technology

Introduction

Arvid E Englund, Jr. is a notable inventor based in Lynchburg, VA (US), recognized for his contributions to radio transceiver technology. With a total of 5 patents to his name, Englund has made significant advancements in the field of communication systems.

Latest Patents

One of his latest patents is for a duplex radio transceiver having improved data/tone and audio modulation. This innovative circuit architecture allows for audio, tone, and digital data signal modulation in a full duplex radio transceiver. A single signal source is utilized to generate both transmitted carrier and receiver local oscillator injection signals. The design ensures that the transmitted data does not appear at the receiver's discriminator output, while a 'side tone' of transmitted audio is present. The audio to be transmitted is used to frequency modulate a voltage-controlled oscillator (VCO) and provide the receiver's first mixer injection signal, as well as a 'carrier' input to a phase modulator. The data/tone signals are combined and integrated into a complex waveform, which is then input to control the phase modulator. The resulting FM output from the phase modulator is subsequently input to a conventional duplexed RF transmitter.

Another significant patent is the bandwidth control circuit for a phase locked loop. This invention provides control signals for switching the bandwidth of a filter in a phase locked loop through comparator circuits that have time delays at their inputs. These delays vary based on the magnitude of changes in the outputs from a phase comparator. The variable time delays allow the comparator circuits to produce an output of the appropriate duration, enabling the filter to maintain a large bandwidth long enough for the phase locked loop to become locked.

Career Highlights

Arvid E Englund, Jr. is currently employed at General Electric Company, where he continues to innovate and develop advanced technologies in the field of radio communications. His work has had a lasting impact on the industry, contributing to more efficient and effective communication systems.

Collaborations

Englund has collaborated with several talented individuals in his field, including Gregory N Mears and Stephen Robert Wynn. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Arvid E Englund, Jr. stands out as a prominent inventor in the realm