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Front-end module offers WiFi, Bluetoot filtering

Posted: 18 Apr 2011 ?? ?Print Version ?Bookmark and Share

Keywords:front-end module? filter? out-of-band rejection?

Avago Technologies has released a front-end module with filtering for 802.11b/g/n WiFi and Bluetooth radios in handsets and mobile routers for tablets and other portable PC devices. The AFEM-S102 module integrates a Film Bulk Acoustic Resonator (FBAR) coexistence filter, SP3T antenna switch and TX path coupler in a small 2.2x2.2x0.55mm package that is targeted for space-constrained applications. The 2.5GHz module delivers superior out-of-band rejection enabling concurrent operation of WiFi and Bluetooth data-communication with cellular communication standards.

Avago front-end modules integrate multiple technologies to reduce PCB board footprint and simplify design for portable electronics applications. The AFEM-S102 module exhibits low insertion loss that combines with high noise rejection to meet stringent coexistence requirements and enable fewer interference issues between WiFi, Bluetooth and other radios. Effectively leveraging Avago 0.25?m GaAs enhancement-mode pHEMT process and its FBAR filtering technologies, the module delivers 2.6dB maximum insertion loss for the TX path and 35 dB rejection in the 2110C2170MHz range.

Avago FBAR technology delivers steeper rolloff and lower insertion loss than ceramic or SAW filters and has a more compact form factor. Low insertion loss reduces power amplifier current and improves receiver sensitivity and dynamic range, resulting in extended battery life and talk time and better signal quality for handsets. FBAR technology makes ultra-small, high-Q filters possible at a fraction of their usual size, and allows integration with other radio components. Additional features of the AFEM-S102 include RF ports matched to 50? for simplified design; TX, RX, BT and ANT ports DC blocked; -18dB TX directional coupling; and -30C85C operation.

Samples and production quantities of AFEM-S102 front-end module are available now through Avago's direct sales channel and worldwide distribution partners.

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