TY - JOUR ID - 166375 TI - Investigating the Test and Evaluation of GaN Transistors Radiation Resistance in SSPA Amplifier Board in LEO Satellite Payload JO - Space Science and Technology JA - JSST LA - en SN - 2008-4560 AU - Karimzadeh Baee, Roghieh AU - Daneshvar, Hamideh AU - Ahmadi, Amir Hossin AU - Sojoodi, Parvin AD - Assistant Professor, Satellite Communication Group- Faculty of Communications Technology, Iran Telecommunication Research Center, Tehran, Iran AD - Assistant Professor, Radiation Processing and Dosimetry Research Group, Radiation Application Research School, Nuclear Science and Technology Research Institute, Atomic Energy Agency of Iran, Tehran, Iran. AD - Ph.D., Satellite Communication Group- Department of Communications Technology, Iran Telecommunication Research Center, Tehran, Iran AD - M.Sc., Expert of Satellite Communication Group,, Department of Communications Technology, Iran Telecommunication Research Center, Tehran, Iran Y1 - 2023 PY - 2023 VL - 16 IS - 1 SP - 59 EP - 74 KW - radiation resistance KW - Space Radiation KW - GaN transistors KW - SSPA amplifier KW - LEO satellite DO - 10.30699/jsst.2023.1400 N2 - With the advent of GaN technology, achieving microwave power with high efficiency by solid-state devices has become more available. Therefore, the use of SSPA amplifiers with GaN technology in satellites, especially LEO satellites, has been considered. space radiation can affect the performance and reliability of components in space systems, which needs to be investigated. One of the most important technologies that can be affected by radiation effects is GaN transistors. In this paper, the effect of TID on GaN transistors in the SSPA amplifier board is investigated. Since commercial components have been used in the engineering sample of the SSPA amplifier and the calculations obtained from the RDM estimates under the worst conditions show that it is necessary to conduct a test for these components, the radiation resistance test was performed for this amplifier. The results of the test conducted in this article show that the SSPA GaN board has radiation tolerance up to a dose of approximately 16 krad. Therefore, mismatched GaN transistors are resistant up to this amount of dose. This is while the sequencer board actually has less tolerance than 5.5 krad UR - https://jsst.ias.ir/article_166375.html L1 - https://jsst.ias.ir/article_166375_99e04760aaa3b441e0b0d60b80e9f89b.pdf ER -