Title :
A High Linearity and Efficiency of Envelope Elimination and Restoration using Photonic Band-gap and Applying Class-F Power Amplifier
Author :
Lee, Chongmin ; Seo, Chulhun
Author_Institution :
Wireless Commun. RF Syst. Lab., Soongsil Univ., Seoul
Abstract :
This paper has presented a novel envelope elimination and restoration (EER) structure using class-F power amplifier. The photonic bandgap (PBG) structure has been applied to suppress the 2nd and 3rd harmonics on output matching network. The envelope tracking circuit of EER structure has consisted of the envelope detector and the DC-DC converter. The power added efficiency (PAE) and the 3rd order inter-modulation distortion (IMD) has been improved comparing with those of adaptive biased Doherty power amplifier.
Keywords :
DC-DC power convertors; UHF power amplifiers; harmonics suppression; intermodulation distortion; photonic band gap; DC-DC converter; PBG; adaptive biased Doherty power amplifier; class-F power amplifier; envelope detector; envelope elimination; envelope tracking circuit; harmonics suppression; inter-modulation distortion; photonic band-gap; power added efficiency; restoration structure; Circuits; Envelope detectors; Frequency; High power amplifiers; Lattices; Linearity; Photonic band gap; Power amplifiers; Power harmonic filters; Power system restoration; EER; IMD; PAE; PBG; class-F power amplifier;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4554705
