The December issue of High Frequency Electronics has an interesting article from Andrei Grebennikov of Bell Labs Ireland. Linearity and high efficiency design challenges are addressed with a transmission line for output match of a Class E power amplifier using a Nitronex GaN HEMT transistor.
High-Efficiency Transmission-Line GaN HEMT Class E Power Amplifier
Class E GaN HEMT Power Amplifier
Tags: Amplifier·GaN·Power Amplifier
Monolithic Microwave High Power Amplifiers on GaAs for Phased Array Radar deliver high efficiency for X-band applications. Huet, Bly and Serru of UMS demonstrates the design of a HPA using PHEMT technology.
8W-X-Band-PHEMT-High-Power-Amplifier-Design-UMS
Tags: Amplifier·Class AB·combiner·DRC·GaAs·Gain Compression·Harmonic Balance·Layout·Load Pull·measurements·Momentum·MonteCarlo·optimization·PAE·PDK·PHEMT·Power Amplifier·stability analysis·X-band