Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2007/05/01 Vol. E90-CNo. 5pp. 929-936 Type of Manuscript: Special Section PAPER (Special Section on Fundamentals and Applications of Advanced Semiconductor Devices) Category: Compound Semiconductor and Power Devices Keyword: GaN-FET, amplifier, memory effects, baseband impedance, digital predistortion, W-CDMA,