High-Efficiency Power Amplifier Using an Active Second-Harmonic Injection Technique Under Optimized Third-Harmonic Termination.
Mincheol SeoHwiseob LeeJehyeon GuHyungchul KimJunghyun HamWooyeol ChoiYanghun YunKenneth K. OYoungoo YangPublished in: IEEE Trans. Circuits Syst. II Express Briefs (2014)