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.



  • 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

Images & Diagrams


    • 5.15
    • 5.925
    • ax
    • 1
    • 5 GHz High-Power WLAN Front-End Module
    • 34
    • LGA, 24-pin
    • 3 x 5