SPRACV2 November 2020 AWR1843 , AWR2243
Representative TX phase shifter accuracy from a nominal AWR2243 device is shown in Figure 3-5 (with and without the calibration procedures using temperature correction LUTs explained above). In TI lab evaluation of a few DoE devices, the phase shifter INL has been observed to be < approximately +/- 2 degrees. The evaluation used a waveguide loopback between the TX and RX of an AWR2243 device and measured TX phase shifter errors by sweeping across TX phase shifter codes and processing the ADC data received on the RXs.