5 GHz High-Power WLAN Front-End Module

The SKY85743-31 is a highly integrated, 5 GHz front-end module (FEM) incorporating a 5 GHz single-pole, double-throw (SPDT) transmit/receive (T/R) switch, a 5 GHz high-gain low-noise amplifier (LNA) with bypass, and a 5 GHz power amplifier (PA) intended for high-power 802.11ax applications and systems.

The LNA and PA disable functions ensure low leakage current in the off mode. An integrated logarithmic power detector is included to provide closed-loop power control.

The device is provided in a compact, 24-pin 3 x 5 mm conformally shielded Land Grid Array (LGA) package, which may reduce the front-end board space by more than 50 percent.


Product LifecycleIn Production
Frequency (GHz) Min.5.15
Frequency (GHz) Max.5.925
802.11 WLAN Standardax
Antenna Ports1
Architecture5 GHz High-Power WLAN Front-End Module
Typ. Tx Gain (dB)34
PackageLGA, 24-pin
Package (mm)3 x 5


  • Integrated high-performance 5 GHz PA, LNA with bypass, and T/R switch
  • Fully matched input and output
  • Integrated logarithmic power detector
  • Transmit gain: 34 dB typical
  • Supports 802.11ax: output power
  • Conformally shielded part
  • Integrated, temperature-compensated log detector
  • Highly sensitive, jammer-tolerant, high-gain LNA
  • Small (24-pin, 3 x 5 mm) conformally shielded package

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