Bluetooth transceivers operate in the 2.4GHz ISM band. The frequency range is 2400MHz to 2483.5MHz [in most countries]. The channel spacing is 1MHz, with an upper and lower guard band. Output power is also specified. Bluetooth uses GFSK [Gaussian Frequency Shift Keying] as its modulation. The symbol rate is 1Msps
The 2.4GHz band is part of the ISM [Industrial, Scientific, and Medical] license-free radio bands. Both Bluetooth and 802.11 operate with in the band. Additional frequencies of the ISM band include the 900MHz band, and 5.8GHz band. The un-licensed ISM band also means that devices need to be short range so that they do not interfere with other devices which may also be using the band.
Chart of US Frequency Allocations *.pdf {NTIA}
Companies which manufacture Wireless ICs and Bluetooth devices are listed on the RF Components page.
Atmel
{BlueTooth}
Austria Mikro Systeme
International AG "AMS"
{Bluetooth}
CSR
{Bluetooth Silicon Engine}
Oki Semiconductor
{Bluetooth}
Zarlink Semiconductor
{Bluetooth ICs}
Design Key words: Bluetooth, Ad hoc network, Air, Radio, Wireless, Wireless Local Area Networks, WEP, OFDM, AES, Wireless LANs, Wireless Personal Area Networks, Wireless PANs, Wireless Metropolitan Area Networks, Wireless MANs, Mobile, Metropolitan area network, MAN, CSMA/CD, Independent Basic Service Set, Station, Mobile, Portable.
|
|
|||||||
| Home | |||||||
|
|
|||||||
|
|
|
|
|
|
|
|
|
| Distributors | Components | Equipment | Software | Standards | Buses | Design | Reference |