Skyworks' BAW Filters Enable Co-existence of WiMAX and WLAN

(Product News, 4 Jun 2008)

Skyworks Solutions Inc. has launched what is said to be the industry's first bulk acoustic wave (BAW) filters—the SKY33107 and the SKY33108—for customer premise equipment (CPE) that allow co-existence between wireless local area networks (WLAN) in the home and enterprise, and WiMAX networks, which cover wider areas including neighborhoods and cities. As both networks operate at very closely spaced frequency bands, these unique BAW filters reject the interfering frequencies while allowing the desired signals to pass for the selected network.

BAW filters are integral components of radio frequency (RF) architectures and according to Strategy Analytics, demand is projected to exceed $1.5 billion by 2010. Given their particular combination of small footprint, low profile and high performance, they are extremely valuable in enabling next-generation wireless products, which increasingly require greater functionality and reduced form factors.

The SKY33107 is a Wi-Fi reject/WiMAX pass, and the SKY33108 is a Wi-Fi pass/WiMAX reject, BAW filter. Both 3x3mm devices have very low in-band insertion loss and input and output return loss. They also exhibit excellent rejection—in the 2.4GHz WLAN band for the SKY33107, and 2.495GHz to 2.690GHz WiMAX band for the SKY33108. The SKY33107 is intended for use in 2.495GHz to 2.690GHz WiMAX band transmitter applications which also contain WLAN 802.11 b, g, n transmitters, while the SKY33108 is targeted at 2.4GHz to 2.473GHz Wi-Fi band transmitter applications, which also encompass 2.495GHz to 2.69GHz WiMAX transmitters. Both filters can operate over a -20°C to 85°C temperature range and are available in a lead (Pb)-free, restriction of hazardous substances (RoHS)-compliant package.

Click here for more information on Skyworks' SKY33107 BAW filter

Click here for more information on Skyworks' SKY33108 BAW filter

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