Title :
Study of the impedance transformation ratio of microwave rectifier for outphasing power recycling application
Author :
Defu Wang ; Junqing Guan ; Negra, Renato
Author_Institution :
Dept. of High Freq. Electron., RWTH Aachen Univ., Aachen, Germany
Abstract :
This paper presents an analysis for the impedance transformation ratio of microwave rectifier, implemented as an energy recycling unit suitable for RF outphasing transmitters. The experimental demonstration is realised by two single-ended microwave rectifiers with different impedance transformation ratios to separately replace the power-wasting resistive load of an isolating combiner in a multilevel LINC system. The measurement results show that the implemented rectifier can improve the overall efficiency of the multilevel LINC system from original 39.5 % to 46.7 % and 44.9 % respectively, without affecting linearity.
Keywords :
microwave circuits; radio transmitters; rectifiers; recycling; RF outphasing transmitters; impedance transformation ratio; isolating combiner; multilevel LINC system; outphasing power recycling application; power-wasting resistive load; single-ended microwave rectifiers; Impedance; Microwave FET integrated circuits; Microwave circuits; Microwave integrated circuits; Microwave measurement; Recycling; Microwave rectifiers; impedance transformation ratio; multilevel LINC (ML-LINC); outphasing recycling system (ORS);
Conference_Titel :
Power Amplifiers for Wireless and Radio Applications (PAWR), 2015 IEEE Topical Conference on
Conference_Location :
San Diego, CA
DOI :
10.1109/PAWR.2015.7139212
