ISM Bands

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.

More relaxed regulation apply for talk level probing radar (TLPR) applications, provided the sensor is kept in a closed environment.

Table 2: TLPR Bands

Frequency	Frequency Range	Bandwidth
24 GHz	24.05 - 27.00 GHz	2.95 GHz
61 GHz	57.00 - 64.00 GHz	7.00 GHz
80 GHz	75.00 - 85.00 GHz	10.00 GHz

Please note differences in regional regulations for TLPR application.

Disclaimer:

The overview above cannot replace individual information and efforts for the release of sensor solutions on cutomer side. No warranty is given, errors and omissions excepted.