ISM Bands

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ISM Bands (or Industrial-, Scientific- or Medical Frequency Bands) are attractive frequency ranges for the deployment of Radar equipment. Choosing a frequency in one of those bands reduces the effort to meet necessary regulations. The ISM frequency bands of interest for Silicon Radar products are situated in the range of 24 GHz, 60 GHz, 122 GHz and 244 GHz. The exact frequency bands are depicted in Table 1. In difference to the common believe, some parts of these ISM bands still require a licencing. More details can be found in the corresponding standardization bodies and documentations. Also pay attention for national differences which may apply to broader frequency range allocations. At the end, each operator is held responsible to respect these limits when operating radar devices. This applies as well to the power transmission, which shall not exceed 100 mW e.i.r.p. for the four bands indicated.

Table 1: ISM Bands
Frequency Frequency Range Bandwidth Thereof licence free(*) License free bandwidth(*)
24 GHz 24.00 - 24.25 GHz 0.25 GHz 24.15 - 24.25 GHz 0.1 GHz
61 GHz 61.00 - 61.50 GHz 0.50 GHz 61.00 - 61.50 GHz 0.50 GHz
122 GHz 122.00 - 123.00 GHz 1.00 GHz 122.25 - 123.00 GHz 1.00 GHz
244 GHz 244.00 - 246.00 GHz 2.00 GHz 244.00 - 246.00 GHz 2.00 GHz

(*) Please check your exact local regulations.