Location History:
- Stenkullen, SE (2011)
- Floda, SE (2020)
Company Filing History:
1 out of 25,721 
1 out of 4 Years Active: 2011-2020
Title: Håkan Grenabo: Innovator in Phase Detection Technology
Introduction
Håkan Grenabo is a notable inventor based in Stenkullen, Sweden. He has made significant contributions to the field of telecommunications, particularly in the area of phase detection technology. His innovative approach has led to the development of a patented method that enhances the performance of carrier recovery loops.
Latest Patents
Håkan Grenabo holds a patent for a QAM phase error detector. This invention relates to a method for reducing cycle slips in a carrier recovery loop for a phase detector. The method involves receiving an input signal consisting of samples, each having an in-phase (I) and quadrature-phase (Q) component. The input signal is provided to a phase error estimator that determines a phase error estimate. This estimate is then used in a loop filter to form an output signal from the carrier recovery loop. The invention improves phase tracking performance by combining the amplitude and phase of the samples with a probability measure for a specifically transmitted symbol. This results in a reduction of cycle slips without the need for high-performance, expensive hardware solutions, while also suppressing the effects of decision errors. Consequently, this leads to an improvement in Bit Error Rate (BER) in low Signal-to-Noise Ratio (SNR) conditions.
Career Highlights
Throughout his career, Håkan Grenabo has worked with several prominent companies in the telecommunications sector. He has been associated with Advantech Advanced Microwave Technologies, Inc. and Telefonaktiebolaget Lm Ericsson (publ). His work in these organizations has allowed him to apply his innovative ideas and contribute to advancements in technology.
Collaborations
Håkan has collaborated with talented professionals in his field, including Simone Crosta and Andrea Angelini. These collaborations have further enriched his work and contributed to the development of his patented technologies.
Conclusion
Håkan Grenabo is a distinguished inventor whose work in phase detection technology has made a significant impact in telecommunications. His innovative patent for a QAM phase error detector showcases his ability to solve complex problems in the industry. His contributions continue to influence advancements in technology and improve communication systems.