Christof Pfannenmüller

Title: Christof Pfannenmüller: Innovator in Duplexer Technology

Introduction

Christof Pfannenmüller is a notable inventor based in Erlangen, Germany. He has made significant contributions to the field of electronic devices, particularly in duplexer technology. With a total of 4 patents to his name, Pfannenmüller continues to push the boundaries of innovation.

Latest Patents

One of his latest patents is the "Differential double balanced duplexer." This invention includes a transmitter and a first balun coupled to a first impedance tuner. The tuner produces a first impedance that blocks received signals at a specific frequency range from traveling across the first balun into the transmitter. Additionally, it allows transmitted signals at a second frequency range to pass through to the antenna. This design enhances isolation and reduces insertion loss.

Another significant patent is the "Duplexer architecture using 90 degree hybrid coupler based balancing conditions." This electronic device features isolation circuitry that connects a transmitter, a receiver, and one or more antennas. The isolation circuitry includes a 90-degree hybrid coupler that receives a transmission signal from the transmitter, splits it into two portions, and phase-shifts them to be +90 degrees out-of-phase. This innovative approach allows for improved signal integrity and performance.

Career Highlights

Pfannenmüller is currently employed at Apple Inc., where he applies his expertise in developing advanced electronic solutions. His work has been instrumental in enhancing communication technologies, making significant strides in the industry.

Collaborations

Throughout his career, Pfannenmüller has collaborated with talented individuals such as Dominic Koehler and Harald Pretl. These partnerships have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Christof Pfannenmüller is a distinguished inventor whose work in duplexer technology has made a lasting impact on the field of electronics. His innovative patents and collaborations continue to shape the future of communication devices.