Title :
High speed downlink system for small satellite and high-efficiency x-band GaN SSPA
Author :
Watanabe, Hiromi ; Fukami, Tadashi ; Saito, Hiroshi ; Tomiki, Atsushi ; Ceylan, Oguzhan ; Nunomura, Hitoshi ; Shigeta, Osamu ; Shinke, Takahiro ; Kojima, Keisuke
Author_Institution :
Dept. of Electr. Eng. & Inf. Syst., Univ. of Tokyo, Tokyo, Japan
Abstract :
A high-speed downlink communication system is required to meet various applications for nano/small satellites. The purpose of this research is to develop a high-data-rate X band downlink system with low power consumption. A high efficient RF circuits using GaN-HEMT SSPA and low power consumption digital circuits were important. We developed over 300Mbps with occupied BW150MHz, RF power 2W, power consumption 20W, mass 1.4kg.
Keywords :
III-V semiconductors; artificial satellites; gallium compounds; high electron mobility transistors; microwave power amplifiers; satellite communication; telecommunication power management; GaN; HEMT SSPA; high efficient RF circuits; high-data-rate X band downlink system; high-efficiency X-band SSPA; high-speed downlink communication system; low power consumption digital circuits; nanosatellites; small satellite; Cameras; Gain measurement; Indexes; Integrated circuits; Phase shift keying; Radio frequency; Reliability; DPD; GaN-HEMT PA; X band; downlink; small satellite;
Conference_Titel :
Microwave Symposium (IMS), 2014 IEEE MTT-S International
Conference_Location :
Tampa, FL
DOI :
10.1109/MWSYM.2014.6848670
