RFIC Design


IQ Calibration

TX RSB Improvement by IQ Calibration Residual sideband suppression (RSB) is one of key TX specs. We want to minimize this because this degrades EVM (when LO is centered to CC leading to signal and its image falling on top of each other) or degrades ACLR (when LO is not centered to CC leading to different signal […]

Semiconductor Yield Estimation

CPK to Sigma conversion for semiconductor yield estimation

Semiconductor Yield Estimation Say you have an amplifier with Gain spec of x dB and you want to understand how many chips will pass this spec. What do you do? You measure all the parts you have, count the parts where gain fell below x dB and divide it to total number of parts, and […]