Investigation on a Desirable DPD Architecture and Trapping Characteristics for GaN Power Amplifier Linearization
Philip Song, Zul Mokhti, Qianli Mu
Virtual Technical Session (WelF1-17)
Wednesday, June 23 | Time: 13:00 – 15:00
A 2-level digital predistortion (DPD), a simplified version of a piecewise DPD, is designed and used to verify that a piecewise DPD is effective in linearizing typical GaN devices in industry that exhibit low power distortions due to trapping. A further investigation is taken to understand the device characteristics that are favored by a piecewise DPD by characterizing various devices.