Title :
Switching-Mode Differential Class-B Amplifier for Phased Array Radar
Author :
Kalim, Danish ; Erkens, Holger ; Wunderlich, Ralf ; Negra, Renato ; Heinen, Stefan
Author_Institution :
Dept. of Integrated Analog Circuits, RWTH Aachen Univ., Aachen
Abstract :
Switching-mode power amplifiers are used in applications where linearity is not critical and efficiency is the utmost priority e.g. phased arrays. This paper presents the design of a differential class-E amplifier for a phased array radar application in 0.25 mum SiGe BiCMOS technology. The operating frequency range is 2.9 GHz to 3.1 GHz with center frequency at 3 GHz. The design approach of the amplifier which includes damping circuit, shunt charging capacitor and balun will be described, Simulations of the design predict an output power and PAE of 25.8 dBm and 49% respectively. The output stage is biased with a 3.3 V at the collector.
Keywords :
BiCMOS analogue integrated circuits; Ge-Si alloys; baluns; phased array radar; power amplifiers; BiCMOS technology; balun; damping circuit; frequency 2.9 GHz to 3.1 GHz; phased array radar; shunt charging capacitor; size 0.25 mum; switching-mode differential class-E amplifier; BiCMOS integrated circuits; Damping; Differential amplifiers; Frequency; Germanium silicon alloys; Linearity; Phased arrays; Power amplifiers; Radar applications; Silicon germanium; SiGe HBTs; class-E; phased array radar; power added efficiency; power spectrum; switchingmode power amplifiers (SMPAs);
Conference_Titel :
Microwave Conference, 2009 German
Conference_Location :
Munich
Print_ISBN :
978-3-9812668-0-1
Electronic_ISBN :
978-3-8007-3150-3
DOI :
10.1109/GEMIC.2009.4815894
