Title :
A Highly Efficient Broadband (7-14 GHz) Monolithic Class E Power Amplifier for Space Based Radar
Author_Institution :
Raytheon Space & Airborne Syst., El Segundo
Abstract :
This paper describes the design and fabrication of a highly efficient broadband monolithic class-E power amplifier utilizing a new distributed class-E load topology. The amplifier maintains a simultaneous high PAE and output Power over 7.0 GHz of bandwidth. The HPA´s measured performance shows a PAE range of (50 % to 82 %) and an output power of >25 dBm across 7-14 GHz. The new broadband load also allows the HPA to have excellent spectrally pure frequency response demonstrated by its low AM and PM noise. A single 0.25 um x 720 um GaAs pHEMT device is used in this circuit.
Keywords :
airborne radar; microwave power amplifiers; wideband amplifiers; AM noise; PM noise; distributed class-E load topology; efficiency 50 percent to 82 percent; frequency 7 GHz to 14 GHz; highly efficient broadband amplifier; monolithic class E power amplifier; pHEMT device; space based radar; Bandwidth; Broadband amplifiers; Distributed amplifiers; Fabrication; High power amplifiers; Power amplifiers; Power generation; Power measurement; Spaceborne radar; Topology; Broadband Class E amplifiers; high efficiency amplifiers; monolithic power amplifiers; space based radar technology;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0530-0
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2007.380984
