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- Fridays for Future (1)
- Globalstrahlung (1)
- MEMS, Microphone, Package, RF (1)
- PV-Erträge (1)
In March 2019, German-speaking scientists and scholars calling themselves Scientists for Future, published a statement in support of the youth protesters in Germany, Austria, and Switzerland (Fridays for Future, Klimastreik/Climate Strike), verifying the scientific evidence that the youth protestors refer to. In this article, they provide the full text of the statement, including the list of supporting facts (in both English and German) as well as an analysis of the results and impacts of the statement. Furthermore, they reflect on the challenges for scientists and scholars who feel a dual responsibility: on the one hand, to remain independent and politically neutral, and, on the other hand, to inform and warn societies of the dangers that lie ahead.
Building service equipment – from source characterization and prediction to validation in buildings
(2025)
The integration of MEMS microphones in RF-intensive environments presents new challenges due to electromagnetic interference (EMI), particularly audible interference such as TDMA noise. As wireless technologies like 5G and advanced WLAN standards continue to grow, MEMS microphones face increased demands for interference robustness.
This research presents a simulation-driven approach to analyze RF-induced thermal effects in MEMS microphones. A full-wave electromagnetic simulation of the MEMS microphone was performed in Ansys HFSS. The S-parameters were extracted from the microphone FEM model, and subsequent circuit co-simulations were used to quantify power dissipation in the ASIC. These identified heat sources served as input for thermal simulations, which helped to quantify the temperature variations in the microphone’s back volume. Based on this and the ideal gas law, a sound pressure was derived. The simulated results were validated by measurements and found to align well with the measured demodulated noise, confirming the effectiveness
of this simulation approach in understanding and mitigating RF-induced interference in MEMS microphones.
