GaN Power Amplifier Test Challenges in 5G
20 Jan 2025
This application note details critical characterization techniques including time domain synchronization and meticulous system calibration to boost efficiency across various scenarios. Gain insights on the fundamental role of GaN PAs in RF transmission, tackle the challenges posed by intricate test setups, and explore methods such as digital predistortion for maintaining signal integrity.
This document contains the following information:
- An overview of GaN power amplifiers in RF transmission that highlights their crucial amplification role
- Details on the challenges of testing GaN-based amplifiers, including complex setups and system calibration
- Insights into GaN PA characterization using continuous wave (CW) and multitone signals for accurate performance analysis
- Information on enhancing GaN PA efficiency using techniques like time domain synchronization
- A detailed look at linearization via digital predistortion to maintain signal fidelity and spectral purity
- Descriptions of new processes and technologies affecting GaN PA performance, such as gain impacts from impurities
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