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What are the capabilities of Bluetooth®?

Being a communication specialist who had participated in the development of Bluetooth® from the beginning we often receive requests concerning this topic. Therefore, we are giving you a short overview about the Bluetooth® technology and its possible applications on this page.

Bluetooth® is a technology for wireless data transmitting by short frequency radio in the worldwide license-free ISM network for (industry, science, medicine 2.402-2.480 GHz). The technology had been implemented in 1998 in order to eliminate the data transmitting between mobile and stationary devices at short distances with cables.

The maximum range of Bluetooth® devices is depending of the transmitting power. Therefore Bluetooth® chips are divided into three Transmitting Classes: Transmitting Class III (transmitting power 1 mW) reaches a range of up to ten m, Transmitting Class II (2.5 mW) up to 20 m and Transmitting Class I (100 mW) up to 100 m. The (theoretic) transmitting speed according to the current Bluetooth® standard is from 1.2 to up to 723.7 kbit/s, devices of the new standard 2.0 with EDR (enhanced data rate) allow a bandwidth of about 2.2 Mbit/s.

The advantages of Bluetooth® towards other wireless data transmitting technologies are among others the little energy consumption, the insensibility towards interferences and the flexibility in usage. Bluetooth® chips can be produced at low price and can be used in many areas. There are more and more Bluetooth® devices coming on the market; many others can easily be retrofitted with special adapter solutions – e.g. by LinTech. Up to eight devices can be activated in a Bluetooth® network at the same time and they can communicate alternately among one another.

Some Fields of application

		Wireless data transmitting between mobile and stationary devices such as PCs, Notebooks, Printers, PDAs, mobile phones,....
		Wireless connection to telecommunication networks such as DSL, ISDN or the analog telephone line
		Wireless headsets for mobile phones
		Wireless mobile phones in cars
		Wireless control of devices and machines
		Wireless connection of data logging devices (e.g. measurements)

So-called Bluetooth® profiles, i.e. frame definitions for different applications guarantee that different devices can communicate among each other. There is already a multitude of profiles, others are being developed. When purchasing Bluetooth® devices, make sure that the devices which have to communicate with each other are offering matching profiles.

A selection of Bluetooth® profiles

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