Title :
Planar C-band DC-DC converter
Author :
Djukic, S. ; Maksimovic, D. ; Popovic, Z.
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Abstract :
In this paper, we present a DC-DC converter which operates at a microwave frequency. The converter consists of a Class-E switched-mode microwave amplifier which performs the DC-AC conversion, and two half-wave diode rectifier outputs. The class-E MESFET amplifier has a maximum power-added efficiency (PAE) of 86%, corresponding drain efficiency of 95% and 120 mW of output power at 4.5 GHz. The diode rectifier has a conversion efficiency of 91% and an overall efficiency of 77%. The DC-DC converter is planar and compact, with no magnetic components, and with an overall DC-DC conversion efficiency of 50%. The DC input is 3 V, and the output voltage across a 115 /spl Omega/ load is 2 V.
Keywords :
DC-DC power convertors; microwave amplifiers; power supply circuits; 120 mW; 2 V; 3 V; 4.5 GHz; 50 percent; 77 percent; 86 percent; 91 percent; 95 percent; C-band; Class-E switched-mode microwave amplifier; DC-DC converter; MESFET amplifier; conversion efficiency; drain efficiency; half-wave diode rectifier outputs; microwave frequency; output power; output voltage; power-added efficiency; DC-DC power converters; Diodes; MESFETs; Microwave amplifiers; Microwave frequencies; Power amplifiers; Power generation; Rectifiers; Switching converters; Voltage;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.779887
