2.4 GHz band


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2.4 GHz band

The frequency range from 2.4 to 2.4835 GHz, which is unlicensed and used for many communications applications, including Bluetooth and Wi-Fi. Microwave ovens also use this frequency. See 5 GHz band, ISM band, Bluetooth and 802.11.
References in periodicals archive ?
Priced at $139.99, the Archer A10 delivers super-fast dual-band Wi-Fi with speeds of up to 1733 Mbps on the 5 GHz band and 800 Mbps on the 2.4 GHz band. Exceptional wireless performance enables online gaming and HD video streaming at the same time, while large files can be shared with multiple devices.
At these distances, the return loss (not shown) was above 10 dB at the 2.4 GHz band but increasing toward 3 GHz.
The average gains are about 1.87 dBi (1.84-1.91 dBi) with variation of 0.07 dBi at the 2.4 GHz band, 2.21 dBi (2.15-2.27 dBi) with variation of 0.12 dBi at the 3.5 GHz band, 2.03 dBi (1.77-2.30 dBi) with variation of 0.53 dBi at the 4.2 GHz band, and 2.24 dBi (2.02-2.45 dBi) with variation of 0.43 dBi at the 5.2 GHz band.
The 10 dB impedance bandwidths of the monopole are 1020 MHz (2.03-3.05 GHz) in the 2.4 GHz band and 690 MHz (4.815.5 GHz) in the 5.2 GHz band.
An insertion loss of 10 dB has been recorded in the 2.4 GHz band increasing to 18dB at the 5.5 GHz band.
The filters are designed for the 2.4 GHz band, and are thus suitable for Bluetooth and wireless LAN implementation in smart phones, regular cell phones, and other mobile devices.
To demonstrate this, the researchers transmitted two twisted radio waves, in the 2.4 GHz band, over a distance of 442 meters from a lighthouse on San Georgio Island to a satellite dish on a balcony of Palazzo Ducale on the mainland of Venice, where it was able to pick up the two separate channels.
The router supports Dual Band wireless which provides wireless connectivity on both the 5 Ghz and 2.4 Ghz band simultaneously.
With up to 50 percent more speed in the 2.4 GHz band than the current generation of 750 Mbps routers, the NETGEAR N900 can support a full 450 Mbps in both the 2.4 GHz and 5 GHz bands.
The researchers aim to overcome wireless signal interference caused when many users try to communicate simultaneously over the 2.4 GHz band used for wireless communication, said Steven Schennum, an engineering professor at the university, who helms the research.
Using two bands, a teleworker's data can travel uninterrupted over the 5GHz channel, while home-based family systems and devices can work over the 2.4 GHz band, she noted.
The 5 GHz (802.11a) option is particularly significant-and unique in industrial I/O systems-because it allows users to deploy SNAP PAC wireless in a frequency other than the typically crowded 2.4 GHz band, where interference from other 2.4 GHz devices, such as microwave ovens, could reduce performance.