SKY65225-11

DATA SHEET SKY65225-11: WLAN 802.11n 2 x 2 MIMO Intera™ Front-End Module Features G G G G Description The SKY65225-11 Intera nFEM combines two complete dual-band transmit/receive chains in one compact RF front end module optimized for 2 x 2 MIMO (multiple in – multiple out) operation, in compliance with the 802.11n draft standard. The SKY65225-11 includes two 5 GHz PAs and two 2 GHz PAs, each with integrated input filtering for 3–4 GHz rejection, and two temperaturecompensated, directional power detectors with 20 dB dynamic range. Also included are low loss, high rejection GaAs diplexers and switches which provide high linearity in all transmit paths and low loss in all receive paths. All RF ports are matched to 50 Ω. The SKY65225-11 Intera nFEM achieves outstanding gain matching between both 2 GHz transmit paths and both 5 GHz transmit paths, which is a critical requirement for MIMO operation. This is accomplished though mirrored layout symmetry. The SKY65225-11 is packaged in a lead (Pb)-free, RoHS-compliant laminate package, which measures 140 mm2. This tiny footprint enables more functionality in less PCB space. Rx0ag R0g Diplexer R0a 2 GHz A0 T0g Dir Det Diplexer 5 GHz T0a PD0ag PU0g PU0a PU1g PU1a PD1ag Dir Det 5 GHz Diplexer Dir Det 2 GHz R1a Diplexer R1g Rx1ag Tx1ag A1 PA Controller Dir Det Tx0ag G G G G G G Two full dual-band transmit/receive chains PCIe, miniPCI, Cardbus, and access point applications Backward-compatible with 802.11a/b/g standards POUT @ 2.5% EVM: 16 dBm (-11a); 19 dBm (-11b); 19 dBm (-11g) Gain matching: