Hans-Andrea Loeliger

Title: Innovations of Hans-Andrea Loeliger

Introduction

Hans-Andrea Loeliger is a notable inventor based in Zurich, Switzerland. He has made significant contributions to the field of electronics, particularly in the development of innovative circuits. With a total of 4 patents, his work has advanced the understanding and application of electronic signal processing.

Latest Patents

One of his latest patents is the "Multi-level soft detector-quantizer." This invention proposes an analog electronic circuit that computes symbol likelihoods for PAM or QAM signal constellations. The circuit features at least one set of M transistors connected to a common current source. A multiplier/adder generates the voltages applied to the transistors from a value y and a set of M expected values, ensuring that the currents through the transistors correspond to the likelihood that the value y matches the expected values. This circuit can be utilized for signal demodulation and various other applications.

Another significant patent is the "Method for mathematically processing two quantities in an electronic circuit." This method allows for the addition of at least two values through a circuit. Both input and output values are represented in differential form, either as a pair of voltages or as a pair of currents. The circuit consists of four transistors and includes a pair of current inputs for one input value, a pair of voltage inputs for the other input value, and a pair of current outputs for the output value. The voltage between the two voltage inputs corresponds to the first input value, while the quotient of the currents through the two current inputs corresponds to the exponential of the other input value. This method is suitable for a variety of applications and allows for cascading with other circuits.

Career Highlights

Throughout his career, Hans-Andrea Loeliger has worked with several companies, including Anadec GmbH and CSEM Centre Suisse d'Électronique et de Microtechnique SA - Recherche et Développement. His experience in these organizations has contributed to his expertise in electronic circuit design and innovation.

Collaborations

He has collaborated with notable coworkers such as Markus Helfenstein and Felix Lustenberger. Their joint efforts have likely fostered advancements in their respective fields.

Conclusion

Hans-Andrea Loeliger's contributions to electronic circuit innovation are noteworthy. His patents reflect a deep understanding of signal processing and circuit design, showcasing his role as