Aiming at the application requirements of satellite navigation antennas in extreme environments, a miniaturized, high-temperature-resistant and anti-interference satellite navigation antenna design scheme integrating composite materials and ceramic microstrip antennas is proposed. The antenna is endowed with excellent heat insulation performance by introducing quartz fiber reinforced silica composite materials, making it suitable for operating conditions with temperatures below 1200°C for a long time. Ceramic microstrip antenna units that are small in size, light in weight and resistant to high temperatures are adopted to meet the signal reception requirements under high-temperature conditions. The simulation results show that this design meets the strict requirements of hypersonic vehicle missions.