Resonanz im Gigahertz-Bereich?

Martin, Dienstag, 02.04.2019, 20:17 (vor 1850 Tagen) @ nvf332758 Views

Kaum.

Wenn Effekte möglich sind, dann sind das demodulierende Effekte, das heißt, dass an Nichtlinearitäten des körperlichen Gewebes der niederfrequentere Wechselanteil beispielsweise eines 5G-Signals heraus-\'gefiltert\' wird.
Normalerweise ist der Mensch hochfrequenztechnisch ein Salzwasserfass, und Hochfrequenzen gehen einfach durch und werden maximal gedämpft. Hat man Metalle im Körper kann es sein, dass an den Übergängen zwischen Gewebe und Metallen Nichtlinearitäten, also Diodeneffekte existieren. Dort demodulierte Signale blieben aber sehr lokal.

Betrachtet man nur biologische Substanzen ginge es um solche Effekte: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.667.8756&rep=rep1&type... \

"Low Frequency Electric Fields From Demodulation In view of public concern that pulsed RF signals from mobile phones might interact differently with biological components from continuous wave RF signals, it is surprising that there has been almost no discussion of how this might arise. It is well known that pulsed RF fields can result in acoustic effects, microwave hearing. This is believed to be a thermal effect and is only detectable at much high peak powers than those of mobile phone signals. So there would need to be another mechanism if, for example, biological effects of pulsing were to occur at the power levels of GSM or TETRA handsets. One possible route would be through demodulation. The RF fields from the mobile phones used for telecommunications are pulsed at 217 Hz (GSM) and 17.6 Hz (TETRA) so demodulation of these signals would lead to the presence of electric fields at 217 or 17.6 Hz and their harmonics, as well as fields at frequencies relating to the digital stream (tens of kHz). Now, the ICNIRP public exposure guideline for low frequency electric fields (4–1000 Hz) of 2 mV/m (for tissue of resistivity 1 Om) is appreciably less than the corresponding guideline at 1 GHz of around 100 V/m. So even quite weak demodulation of mobile phone signals at these fields might produce low frequency electric fields above the guidelines. Demodulation would occur if the electrical conductivity or dielectric constant of a biological component varied significantly with electric field E, so that its electrical response was nonlinear. .... ... So it seems very unlikely that membranes could produce significant demodulation of the 1 GHz or so RF signals used in mobile telecommunications. It seems very probable that this is also the case for other biological components but it is desirable that this should be investigated experimentally. A sensitive technique to investigate the nonlinearity of biological components in vitro by looking for frequency doubling effects has recently been proposed by Balzano [2002, 2003a] and Balzano and Shepherd [2003]. The component is exposed to radiation of frequency at n, and measurements are made of any signals at frequency 2n.The proposal has led to correspondence by Adair [2003b], Balzano [2003b,c], Marino [2003], and Marinot and Frilot [2003]; and an experiment using this technique has recently been funded by the UK MTHR programme."


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