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Convention Paper

The Audio Performance Comparison and Method of Designing Switching Amplifiers Using GaN FET

Authors: Lee, Jaecheol; Kim, Haejong; Cho, Keeyeong; Park, Haekwang

AES Convention 135 · Paper 9008 · October 2013

Abstract

This paper addresses physical characteristics of FET materials, the method of designing switching amplifiers using GaN FET, and the audio performance comparison of silicon and GaN FET. The physical characteristics of GaN FET are excellent, but there is a technical limitation to apply to consumer electronics. Depletion mode GaN FET is used in the proposed system. Its characteristic is better than Enhance mode. But it has the characteristic of normally turn on. To solve this problem, a cascaded GaN switch block is used. It is a combination of depletion mode GaN and enhanced mode Si. The proposed method has more of an outstanding audio performance than the switching amplifier used in silicon.

Details

Published in
AES Convention 135
AES Convention
135
Paper number
9008
Publication date
October 6, 2013
Session subject
Applications in Audio
Affiliation
Samsung Electronics Co., Ltd., Suwon, Korea; Samsung Electronics DMC R&D Center, Suwon, Korea (See document for exact affiliation information.)
Type
Convention Paper