DATA SHEET
SKY65234-11: WLAN 802.11n Single-Band 4.9–5.85 GHz
2 x 2 MIMO Intera™ Front-End Module with 3 Antenna Ports
Features
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Description
The SKY65234-11 Intera nFEM combines two complete
transmit/receive chains in one compact RF front end module opti-
mized for single-band 4.9–5.85 GHz 2 x 2 MIMO (multiple
in—multiple out) operation, in compliance with the 802.11n draft
standard. The SKY65230-11 includes two 5 GHz PAs, each with
integrated input filtering for 3–4 GHz rejection, and two tempera-
ture-compensated, directional power detectors with 20 dB dynamic
range. Also included are low loss, high rejection GaAs filters and
diversity switches which provide high linearity in all transmit paths
and low loss in all receive paths. Additionally, a third antenna port
is added to provide switch diversity capability on both chains. All
RF ports are matched to 50
Ω.
The SKY65234-11 Intera nFEM achieves outstanding gain
matching between both 5 GHz transmit paths, which is a critical
requirement for MIMO operation. This is accomplished though mir-
rored layout symmetry.
The SKY65234-11 is packaged in a lead (Pb)-free, RoHS-compliant
laminate package, which measures 140 mm
2
. This FEM is
designed as a pin-to-pin compatible version of the SKY65230-11
for 4.9–5.85 GHz only.
RxMain0 RxAux0
R0a
TxAux0
TxMain0
A0
5 GHz
T0a
PD0a
PU0a
PU1a
PD1a
T1a
5 GHz
A1
TxMain1
TxAux1
RxMain1 RxAux1
Dir
Det
PA
Controller
Dir
Det
CTRL0A2
A2
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Single-band 4.9–5.85 GHz 2 x 2 MIMO architecture
Two full 4.9–5.85 GHz transmit/receive chains
3rd antenna port provides switch diversity on both chains
Backward-compatible with 802.11a standards
P
OUT
@ 2.5% EVM: 16 dBm (-11a)
Gain matching: < 2 dB @ 5 GHz
Single 3.0–3.6 V power supply, internal voltage regulation
Temperature-compensated PA bias networks and directional
power detection
Separate digital controls for each PA
Package size: 10 x 14 x 0.9 mm
Lead (Pb)-free and RoHS-compliant MSL-3 @ 250 °C
per JEDEC J-STD-020
NEW
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances)-compliant packaging.
Functional Block Diagram
CTRL0A1
R1a
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200616 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 7, 2007
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SKYWORKS [ SKYWORKS SOLUTIONS INC. ]
