WIRE MESH DIMENSIONS FOR MICROWAVE ATTENUATING MATERIALS
Thomas R. Lasalle · 1962
Scientists were developing microwave radiation protection in 1962, decades before wireless devices became ubiquitous.
Plain English Summary
This 1962 technical report investigated the optimal wire mesh dimensions needed to effectively block microwave radiation for protective applications. The research focused on understanding how different mesh configurations could attenuate microwave energy, particularly for developing protective clothing and shielding materials. This work laid important groundwork for EMF protection standards still used today.
Why This Matters
This foundational research from 1962 demonstrates that scientists recognized the need for microwave protection decades before widespread consumer adoption of microwave-emitting devices. The science demonstrates that effective shielding requires specific engineering parameters - you can't just throw any metal mesh at the problem and expect protection. What makes this particularly relevant today is that we're now surrounded by microwave-frequency radiation from WiFi routers, cell phones, and smart devices operating in similar frequency ranges. The reality is that the protective principles established in this early research remain valid, yet most people remain completely unaware that such protection exists or might be necessary. While this was likely military or industrial research, it highlights how protection from microwave radiation has been a recognized concern for over 60 years - long before the wireless revolution put microwave transmitters in every pocket and home.
Figures from the Original Paper
Diagrams extracted from the original research document.
Exposure Information
Specific exposure levels were not quantified in this study.
Study Details
to provide a set of convenient graphs based on the formula presented in reference (b) for determining the wire size and spacing required for protective clothing and shielding to provide the desired attenuations at microwave frequencies
The charts were calculated from the empirical formula developed by Bell Telephone Laboratories and p...
Graphs showing wire diameter (D) as a function of center-to-center wire spacing (a) for representati...
The curves in the graphs can be used to determine appropriate wire mesh dimensions for microwave shielding. For a desired attenuation at a given wavelength, choose the graph which provides this attenuation (10 dB to 50 dB) and the curve which most closely approximates the given wavelength. Any combination of D and a which lies on (or to the left of) this curve will provide the desired (or greater) attenuation. The curves for intermediate wavelengths may be estimated by considering the variational symmetry of the curves.
Show BibTeX
@article{wire_mesh_dimensions_for_microwave_attenuating_materials_g6361,
author = {Thomas R. Lasalle},
title = {WIRE MESH DIMENSIONS FOR MICROWAVE ATTENUATING MATERIALS},
year = {1962},
}