The SKY85809-11 is a complete 802.11a/b/g/n/ac wireless
local area network (WLAN), RF front-end module (FEM) that
provides all the functionality of a power amplifier (PA), filtering,
power detector, transmit/receive (T/R) switch, diplexer, and
associated matching. The SKY85809-11 provides a complete
2.4 GHz and 5 GHz WLAN RF solution, from the output of the
transceiver to the antenna in an ultra-compact form factor.
Designed to meet the stringent linearity conditions of the
802.11ac standard, the SKY85809-11 delivers less than 2%
error vector magnitude (EVM) at the rated alternating
current (AC) power.
Designed for ease of use, all RF ports are matched to 50 to
simplify the layout of the printed circuit board (PCB) and the
interface to the transceiver. The SKY85809-11 also includes a
transmitter power detector with +20 dB of dynamic range for
each transmit chain. Each power amplifier has a separate
digital enable control for transmitter on/off control. The power
ramp rise/fall time is less than 0.5 µs.
The SKY85809-11 provides local oscillator (LO) filters for the
2 GHz and 5 GHz transmit paths.
The SKY85809-11 is packaged in a small 4.0 x 3.0 x 0.6 mm,
Quad Flat No-Lead (QFN) package.