Auxiliary Envelope Tracking Focused Investigations of a 10W GaN HEMTs Device
- Resource Type
- Conference
- Authors
- Chaudhary, Muhammad Akmal; Yusoff, Zubaida; Lees, Jonathan; Benedikt, Johannes; Tasker, Paul
- Source
- 2019 IEEE 3rd International Conference on Circuits, Systems and Devices (ICCSD) Circuits, Systems and Devices (ICCSD), 2019 IEEE 3rd International Conference on. :92-96 Aug, 2019
- Subject
- Components, Circuits, Devices and Systems
Baseband
Radio frequency
Phase measurement
Impedance
Voltage measurement
Frequency modulation
Linearity
active load-pull
baseband
linearity
memory effects
microwave measurements
power amplifiers
- Language
This paper examines the application of a broadband modulated measurement system, and specifically how such a system can be used in combination with active IF load-pull in order to characterize a device whilst operating in an Auxiliary Envelope Tracking (AET). The AET modifies dynamically the instantaneous DC applied to the device through the optimization of baseband impedance. The experimental measurements are carried out on a GaN HEMTs device to investigate the idea of improving the linearity of the device using the very mechanism that is employed to improve efficiency of the device. The investigations have shown a significant improvement in linearity of the device.