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An 8-way phased array TRX front-end with RF phase shifting and on-chip TR switching is implemented in 28nm CMOS . The TX OP1dB and RX NF are 10dBm and 6.8dB, respectively. The active phase shifter shows less than 5° phase resolution and amplitude errors within ±0.35dB. The 9.6mm2 chip consumes 231mW in RX and 508mW in TX mode from a 0.9 V supply. When combined with PCB antennas, a ±46° scan angle...
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