2 layers82.4 × 89.4 mm

Antenna
ICDT-Inatel-Cubesat-Design-Team/S-Band-Antenna
S-Band RHCP 2.45 GHz Patch Antenna for 1U CubeSats
8 parts11CERN-OHL-W-2.0
KiCad boards from 2 GitHub repositories tagged “icdt”, the most starred first; open any of them in PCBKit.

ICDT-Inatel-Cubesat-Design-Team/S-Band-Antenna
S-Band RHCP 2.45 GHz Patch Antenna for 1U CubeSats

ICDT-Inatel-Cubesat-Design-Team/TET-Module
A reliable 1U CubeSat TT&C subsystem featuring an STM32L4 MCU, LoRa radio for long-range communication, CAN Bus, and TMR SPI Flash for critical space applications.