High-efficiency X band GaN power amplifier for small satellite downlink system

A high-speed downlink communication system is required to meet various applications for small satellites. The purpose of this research is to develop a high-data-rate (typically over 300Mbps) communication system. Generally, the operation at nonlinear region provides high efficiency for a RF power am...

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Bibliographic Details
Main Authors: Watanabe, Hiromi, Ceylan, Osman, Saito, Hirobumi, Tomiki, Atshushi, Nunomura, Hitoshi, Shigeta, Osamu, Iwakire, Naohiko, Shinke, Takahiko, Fukami, Tomoya
Format: Conference Proceeding
Language:English
Subjects:
Bit rate
digital pre-distortion
Downlink
Gallium nitride
GaN-HEMT PA
Power amplifiers
Satellites
small satellite
Space vehicles
Transmitters
X band
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Summary:A high-speed downlink communication system is required to meet various applications for small satellites. The purpose of this research is to develop a high-data-rate (typically over 300Mbps) communication system. Generally, the operation at nonlinear region provides high efficiency for a RF power amplifier. However the amplitude-phase modulated signal, which is an efficient scheme in term of frequency band, requires high linearity. In order to amplify amplitude-phase modulated signal for high data rate, a 2W X Band GaN-HEMT power amplifier and digital pre-distortion technique were developed. In this paper measurements and simulations of the system are presented.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2013.6697795