Design and Implementation of 3U CubeSat Platform Architecture

Table 1

Baseline specification for 3U standard platform.

Item	Specification
Power generation	<30 W
BCR (battery charge regulator) function	Included
MPPT (maximum peak power) function	Included (P&O, fuzzy)
Uplink	UHF or VHF, 1200 or 9600 bps
Downlink	UHF or VHF, 1200 or 9600 bps
Mission data downlink	S-band up to 1 Mbps
Mission data handling unit	Included
ADCS board	462 MIPS, 215 MHz
D&DHS board	220 MIPS/200 MHz, NandFlash (<256 MB), SDRAM (<1 GB)
CMD/TLM bus	CAN, I2C
ADCS actuator expansion	CAN, I2C
ADCS sensor expansion	I2C, SPI
GPS expansion	UART, PPS