ISMbanden

ISMbanden, which stands for Industrial, Scientific, and Medical bands, are specific radio frequency bands allocated for use by devices that operate in these categories. These bands are internationally recognized and regulated by bodies like the International Telecommunication Union (ITU). Unlike licensed radio frequencies, devices operating within ISM bands typically do not require individual licenses, making them highly accessible for a wide range of applications.

The primary purpose of ISM bands is to allow for short-range communication and control without causing interference to primary licensed services. Common applications include wireless networking technologies such as Wi-Fi, Bluetooth, and Zigbee. They are also utilized in medical equipment like diathermy machines and scientific instruments such as microwave ovens and industrial heating equipment. The specific frequencies within ISM bands can vary by region, but globally recognized bands include 13.56 MHz, 27.12 MHz, 40.68 MHz, 915 MHz (in Region 2, the Americas), and 2.45 GHz.

Due to their unlicensed nature, devices operating in ISM bands must adhere to strict power limits and regulations to minimize potential interference. This ensures that essential licensed services are protected while still enabling the widespread use of wireless technologies for industrial, scientific, and medical purposes, as well as for consumer electronics. The proliferation of devices using ISM bands has significantly contributed to the growth of wireless communication and the Internet of Things.