5.9 GHz 802.11p DSRC High-Power Front-End Module

The SKYA21043 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 802.11p 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 over 20 dB of dynamic range.

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.5.85
Frequency (GHz) Max.5.925
Typ. Current @ VDD = 3.3 V 17.5dBm (mA)
Typ. Current @ VDD = 3.6 V 17.5dBm (mA)
Typ. Current @ VCC = 3.6 V (mA)
Typ. POUT @ 3.0% EVM (dBm)
Typ. Current @ VCC = 5 V (mA)
802.11 WLAN Standardp
Antenna Ports1
Architecture5.9 GHz 802.11p DSRC High-Power Front-End Module
PackageMCM, 24-pin
Package (mm)3 x 5 x 1.2


  • AEC-Q100 Grade 2 (-40 °C to +105 °C) qualified
  • Support for automotive PPAP
  • High output power across wide temperature range: +25 dBm, 802.11p/DSRC (5.85 to 5.925 GHz) at +105 °C
  • 8 kV ESD protection on antenna output port
  • Fully matched input and output
  • Integrated logarithmic detector with wide dynamic range
  • Ideal for EU toll booth location reduction to +10 dBm
  • Highly sensitive, jammer-tolerant (> +10 dBm IIP3), high-gain (16 dB) LNA
  • Compact conformally shielded package: 24-pin, 3 x 5 mm package
  • MSL3, 260 °C, per JEDEC J-STD-020

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