Company Filing History:
Years Active: 2001-2004
Title: **Innovations and Achievements of Björn Gunnar Johannisson**
Introduction
Björn Gunnar Johannisson is a notable inventor based in Kungsbacka, Sweden. With a remarkable portfolio of 9 patents, Johannisson has made significant contributions to the field of telecommunications, particularly in enhancing the efficiency of power amplifiers and developing advanced antenna systems for cellular networks.
Latest Patents
Johannisson's latest patents showcase his expertise in improving telecommunications technology. One such invention is an "Arrangement and method for improving multi-carrier power amplifier efficiency." This innovative multi-carrier power amplifying arrangement utilizes several amplifying devices, each comprising a main amplifier and a linearizing device. The setup includes a signal device to sum the output signals from these amplifiers in phase, a detector for the average phase error of the amplified signals, and a compensating control signal that is provided to each amplifying device to rectify this error effectively.
Another notable patent is the "System and method for implementing a multi-beam antenna without duplex filters within a base station." This invention aims to enhance cellular systems by employing a multi-beam antenna configuration that operates without duplex filters. This allows the base station to generate overlaid beams in both the uplink and downlink, with each beam featuring orthogonally oriented polarization directions to achieve polarization diversity.
Career Highlights
Björn Gunnar Johannisson has significantly impacted the telecommunications industry through his inventive work while employed at Telefonaktiebolaget LM Ericsson (publ). His contributions focus on improving the performance and efficiency of communication technologies, making them more reliable and accessible.
Collaborations
Throughout his career, Johannisson has collaborated with esteemed colleagues, including Anders Derneryd and Bo Hagerman. These collaborations have fostered an environment of creativity and innovation, leading to breakthroughs in telecommunication systems and methods.
Conclusion
Björn Gunnar Johannisson's commitment to innovation in the telecommunications sector is evident through his extensive patent portfolio and collaborative efforts. His work continues to pave the way for advancements in technology that enhance the efficiency and effectiveness of communication systems, solidifying his status as a prominent figure in the field of inventions and patents.