A modular hybrid switching amplifier for wide-bandwidth supply-modulated RF power amplifiers

A modular hybrid switching amplifier (HSA) for wide-bandwidth supply modulation of RF power amplifiers is presented. The HSA is designed for maximum 15 V supply voltage, 1 A supply current and 10 MHz bandwidth. The purpose is to compare alternative switch technologies. A case study is conducted on G...

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Bibliographic Details
Main Authors: Perea-Tamayo, R., Bengtsson, O., Landin, P. N., Heinrich, W.
Format: Conference Proceeding
Language:English
Subjects:
Current measurement
EER
Envelope tracking
Gallium nitride
hybrid switching amplifiers
Power amplifiers
Power demand
supply modulation
Switches
Switching circuits
Transistors
Online Access:Request full text
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Summary:A modular hybrid switching amplifier (HSA) for wide-bandwidth supply modulation of RF power amplifiers is presented. The HSA is designed for maximum 15 V supply voltage, 1 A supply current and 10 MHz bandwidth. The purpose is to compare alternative switch technologies. A case study is conducted on GaN-HEMT and Si-MOSFET, which are compared with regards to efficiency and linearity under different load conditions, based on simulations and on measurements of the fabricated designs. Design modifications to accommodate the alternative switch technologies are presented together with analysis of non-linearities including slew-rate induced amplitude distortion.
ISSN:2167-8022
2167-8030