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802.11n, Bluetooth combo eases cellphone set-up

Posted: 22 Dec 2009 ?? ?Print Version ?Bookmark and Share

Keywords:802.11n? Bluetooth? Wi-Fi?

Ralink Technology introduces the RT3090BC4 1x1 802.11n plus Bluetooth combo solution that has achieved Bluetooth 2.1 + EDR qualification, as determined by the Bluetooth Qualification Board (BQB). The RT3090BC4 claims an unprecedented level of intelligent coexistence between Wi-Fi and Bluetooth, making it suitable for notebooks, netbooks and high-volume consumer PC platforms.

With support for the Bluetooth 2.1 + EDR functionality, the RT3090BC4 simplifies the set-up of mobile phones and other Bluetooth products. It also extends the range of Bluetooth and improves co-existence with Wi-Fi. Moreover, the RT3090BC4 delivers significantly lower cost and power than discrete Wi-Fi and Bluetooth products, with an optimized bill of materials, a simplified design, and integrated manufacturing and testing procedures.

The growing popularity of slim, ultramobile PCs has sparked demand for highly-integrated, co-located wireless solutions. To ensure optimal radio coexistence between WLAN and Bluetooth, the RT3090BC4 combo solution incorporates a sophisticated coexistence algorithm that ensures improved harmony between co-located WLAN and Bluetooth radios. It dynamically adjusts WLAN and Bluetooth transmissions to reduce interference, and it responds automatically to the presence and operating characteristics of nearby Wi-Fi Access Points. This results in 80 percent faster WLAN throughput, compared to competing WLAN plus Bluetooth combo devices.

The RT3090BC4 is a highly-integrated solution that eliminates redundant components that are required for discrete 802.11n and Bluetooth modules, including antennas, connectors, PCBs, cables, and radio shielding. It delivers more than 10 percent cost savings over competing WLAN plus Bluetooth combo products. PC OEMs also benefit from reduced manufacturing costs achieved through easier assembly, faster testing, and simpler inventory control.

The RT3090BC4 supports the final 802.11n standard as well as Bluetooth 3.0 + HS, the bleeding-edge version of Bluetooth which was announced earlier this year. The solution incorporates support for Motorola's consumer-friendly user interface and 22 Bluetooth profiles, including high-performance multimedia capabilities such as stereo audio, video streaming, and rapid digital photo transfers for personal area network applications.

"Ralink's Wi-Fi solutions are featured in millions of desktop and portable PCs worldwide, as well as the entire ecosystem of WLAN products including retail networking devices," said Horen Chen, president, Ralink. "The RT3090BC4 WLAN/Bluetooth combo solution enables manufacturers to quickly move into the new 802.11n + Bluetooth combo era and increase revenues."

For application notes on Bluetooth click here.

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