Peter M Petersson

Title: Innovations by Peter M Petersson

Introduction

Peter M Petersson is a notable inventor based in Jarfalla, Sweden. He has made significant contributions to the field of analog and digital signal processing. With a total of 6 patents to his name, Petersson has developed innovative methods that enhance the efficiency of analog-to-digital and digital-to-analog conversions.

Latest Patents

One of his latest patents is a method and apparatus for analog-to-digital conversion. This invention eliminates the need for an anti-aliasing filter in receivers that utilize an analog-to-digital converter. By maintaining a predetermined relationship between the local oscillator frequency and the sampling frequency of the analog-to-digital converter, aliasing that typically occurs in the desired pass band is avoided. Specifically, the frequency of the periodic signal provided to the mixer is an integer multiple of half the sampling rate of the analog-to-digital converter. In a preferred embodiment, the sampling rate of the analog-to-digital converter F and the frequency of the local oscillator F are related by the equation F=n*F/2, where n is any positive integer.

Another significant patent by Petersson is a digital-to-analog conversion method and apparatus. This circuit arrangement can be utilized in radio transmitters and includes a Digital-to-Analog Converter (DAC) whose output is directly connected to a mixer. A periodic signal is also provided to the mixer, with its frequency being an integer multiple of half the update rate frequency of the DAC. In one embodiment, the frequency of the periodic signal provided to the mixer is half the update rate frequency of the DAC. An intermediate frequency (IF) filter can be included downstream of the mixer to enhance performance.

Career Highlights

Peter M Petersson is currently employed at Telefonaktiebolaget LM Ericsson (publ), a leading telecommunications company. His work focuses on advancing technologies that improve communication systems and signal processing techniques.

Collaborations

Throughout his career, Petersson has collaborated with notable colleagues, including Krister I Ripstrand and Bo Gosta Hedberg. These collaborations have contributed to the development of innovative solutions in the field of telecommunications.

Conclusion

Peter M Petersson's contributions to analog and digital signal processing have made a significant impact in the telecommunications industry. His innovative patents continue to influence advancements in technology and communication systems.