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Front-end module packs Wi-Fi PA, SP3T switch

Posted: 07 Jul 2010 ?? ?Print Version ?Bookmark and Share

Keywords:front-end module? Wi-Fi? SP3T switch? Bluetooth?

RF Micro Devices Inc. is rolling out the RF3482 single-chip front end module (FEM) that integrates a Wi-Fi power amplifier (PA) with a single-pole, three-throw (SP3T) switch for 2.4GHz to 2.5GHz ISM band applications.

By integrating the complete switch functionality, the RF3482 is able to route Wi-Fi and Bluetooth receive/transmit signals to two SoC transceivers, a typical design architecture implemented in a wide range of high-performance consumer electronics and handset/handheld Wi-Fi applications. Additionally, the SP3T switch can act as a splitter to transmit or receive Bluetooth and WLAN signals simultaneously.

The highly integrated RF3482 satisfies the need for aggressive size reductions for 802.11b/g front-end designs by realizing up to a 50 percent size reduction versus current discrete designs, while at the same time greatly reducing the number of components outside the core chipset. The RF3482 integrates a 2.5GHz b/g PA with 16dBm of linear output power for higher efficiency and lower EVM for 11n applications. The RF3482 also integrates 2170MHz filtering and harmonic attenuation, reducing the need for a high loss/attenuation filter at the FEM output and increasing the output power at the antenna. An integrated Rx balun eliminates the requirement for tuning components between the FEM and the SoC while the direct-to-battery connection eliminates the need for additional DC circuitry. The RF3482 is fully tested and is packaged in a small form factor 3mm x 3mm QFN package.

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