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RF-SOI based mmWave phased array systems have three key advantages:

  1. Transistors, substrate, and the back-end provide improved RF performance.
  2. SOI’s n-FET has lower parasitics than bulk CMOS, enabling higher performance: GlobalFoundries’ 45RFSOI achieves approximately 40 percent higher fmax than bulk CMOS.
  3. Stacked RF-SOI transistors enable 10x higher output power and 2x to 5x higher efficiency.

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