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Detail
Conference Paper
X-Band GaN MMIC Power Amplifier for the SSPA of a SAR System
- Authors
- Dong-Hwan Shin, In-Bok Yom, Dong-Wook Kim
- Issue Date
- 2017-09
- Citation
- International Symposium on Radio-Frequency Integration Technology (RFIT) 2017, pp.93-95
- Language
- English
- Type
- Conference Paper
- Project Code
- 16JR1200, Critical Design and Qualification of GaN MMIC based X-band SSPA, In Bok Yom
- Abstract
- An X-band monolithic microwave integrated circuit (MMIC) power amplifier for Synthetic Aperture Radar (SAR) systems has been implemented using a 0.25 μm AlGaN/GaN HEMT process on a SiC substrate. The MMIC power amplifier has an output power of 45 dBm (30 W) to 46 dBm (40 W) and a power-added efficiency of 38-44 % from 8.8 to 10.4 GHz with an associated power gain of 17 dB under the pulsed bias condition of a 10% duty cycle and 100 μs pulse width. The developed MMIC power amplifier will be applied to the solid-state power amplifier (sSPA) for future satellite SAR systems.
- KSP Keywords
- AlGaN/GaN HEMTs, Duty cycle(DC), MMIC power amplifier, Microwave monolithic integrated circuits(MMIC), Output power, Power added efficiency(PAE), Power gain, Pulsed bias, Satellite SAR, SiC substrate, Solid State Power Amplifier