The data transmission system achieves an 810 Mbps rate in the SDGSAT‐1 satellite, indicating high performance and reliability.
A data transmission system is designed for the SDGSAT‐1 small satellite to meet the high‐speed data processing and transmission requirements. The data transmission system consists of two principal components: the transmitter and the steerable transmission antenna. To satisfy the satellite link budget requirement, the 37.5 dBm X‐band transmitter has been developed for an 810 Mbps data rate with 8PSK modulation. The dual circularly polarized antenna with a pointing mechanism has a gain of over 20 dBi, and the pointing accuracy error is less than 0.110°. The data transmission system’s EIRP exceeds 28 dBW. On‐orbit operations have demonstrated that the data transmission system exhibits excellent performance and high reliability.
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Tang et al. (2025) studied this question.
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