Proposal and Demonstration of Power Conversion-Chip/Amplifier Integrated Antenna

The concept of a power conversion chip integrated antenna (PIA) is proposed for microwave power transmission applications, eliminating the matching circuit between the power conversion chip and antenna to minimise the loss between them. A final stage power amplifier, which is one of the key components of the PIA, was designed and demonstrated. The fabricated 2.4-GHz 33-W GaN HEMT power amplifier demonstrated a drain efficiency of 82.3% and a power added efficiency of 78.8%. A power amplifier integrated antenna, i.e., quasi-PIA, was also demonstrated.