Location History:
- Mölndal, SE (2017)
- Gothenburg, SE (2024)
Company Filing History:
Years Active: 2017-2024
Title: Innovations by William Hallberg
Introduction
William Hallberg is a notable inventor based in Mölndal, Sweden. He has made significant contributions to the field of telecommunications, particularly in the development of advanced antenna systems. With a total of two patents to his name, Hallberg's work focuses on enhancing the efficiency and performance of power amplifiers and antenna transmitters.
Latest Patents
Hallberg's latest patents include the "Integrated Active Doherty Antenna Transmitter" and the "Class-B/C Doherty Power Amplifier." The Integrated Active Doherty Antenna Transmitter features a system that includes a dual-fed antenna element designed to present 2×2 port impedances. This design guarantees high efficiency operation of the main and auxiliary transistors at both peak and backed-off power levels. The proposed solution eliminates the need for lossy power combining, such as PCB-based circuit combining or impedance matching networks between the antenna element and the main and auxiliary amplifiers. Instead, the power from the main and auxiliary transistors is combined at the circuit level by the antenna element.
The Class-B/C Doherty Power Amplifier provides an amplifier arrangement that optimizes efficiency at both peak and back-off power levels. This arrangement includes an input power splitter that divides an input signal into two signals, each received by different transistors operating in class-B and class-C modes. The design incorporates a combining network, with specific circuit element values and conditions based on predetermined power levels and scaling factors.
Career Highlights
William Hallberg is currently employed at Telefonaktiebolaget LM Ericsson (publ), a leading telecommunications company. His work at Ericsson has allowed him to contribute to cutting-edge technologies in the field of wireless communication. Hallberg's innovative designs have the potential to significantly improve the performance of communication systems.
Collaborations
Throughout his career, Hallberg has collaborated with talented individuals such as Christian Fager and Mustafa Özen. These collaborations have fostered an environment of innovation and creativity, leading to the development of advanced technologies in telecommunications.
Conclusion
William Hallberg's contributions to the field of telecommunications through his patents and work at Ericsson highlight his role as an influential inventor. His innovative designs in antenna systems and power amplifiers are paving the way for more efficient communication technologies.