Spectrum and the ITU
Which frequencies would SBSP use, and what international coordination does it need?
Chapter summary
microwave designs favour 2.45 GHz or 5.8 GHz, both within industrial, scientific and medical (ISM) bands, used for microwave ovens and Wi-Fi among others.
Key takeaways
- 1
Beaming gigawatts in these bands would create interference concerns for nearby services, so spectrum allocation through the International Telecommunication Union (ITU) and national regulators would be required.
- 2
Wireless power transmission has been studied at the ITU for years, but no allocation for space-to-Earth power beaming exists.
- 3
Lasers and near-infrared systems avoid radio spectrum but face aviation and optical rules.
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