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

fYear

2009

fDate

16-18 March 2009

Firstpage

1

Lastpage

4

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);

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2009 German

Conference_Location

Munich

Print_ISBN

978-3-9812668-0-1

Electronic_ISBN

978-3-8007-3150-3

Type

conf

DOI

10.1109/GEMIC.2009.4815894

Filename

4815894