Ultrabroadband Linear Power Amplifier Using a Frequency-Selective Analog Predistorter. - Mincheol Seo; Kyungwon Kim; Min-Su Kim; Hyungchul Kim; Jeongbae Jeon; Myung-Kyu Park; Hyojoon Lim; Youngoo Yang (IEEE Trans. Circuits Syst. II Express Briefs, 2011)