Engineers in Japan have developed a deployable satellite antenna based on origami techniques, significantly enhancing the communication capabilities of CubeSats.

Origami Inspires Space Tech

A new study reveals that the ancient art of origami could revolutionize satellite antenna technology. Engineers at the Institute of Science Tokyo have developed a deployable antenna for small satellites, inspired by the ‘flasher’ origami pattern.

CubeSat Communication Challenges

CubeSats, which are compact and cost-effective, have become essential tools for universities, startups, and space agencies. However, their small antennas result in weak signals, making it difficult to maintain reliable communication links, especially from deep space or low Earth orbit.

Compact Design, Powerful Performance

The origami-inspired antenna solves this problem by folding into a compact size for launch and then unfolding in space to a much larger surface area. When stowed, the antenna fits into a box measuring just 10 centimeters square and 6 centimeters deep, weighing only 64 grams—comparable to a small chocolate bar.

Once in orbit, the antenna deploys using booms made from shape-memory materials, expanding to around two and a half times its packed size. The antenna is constructed from a flexible two-layer membrane of conductive and dielectric textiles, with tiny U-shaped circuit elements sewn into the fabric to precisely control radio wave reflection.

Reflect Array Technology

This reflect array design allows the antenna to focus and steer signals without moving parts, a critical feature for spacecraft where mechanical complexity adds weight and potential failure points. Laboratory tests showed the antenna achieved a gain of 18 dBic, indicating its ability to direct signals powerfully and accurately.

Future Deployment and Applications

The antenna will be deployed on OrigamiSat-2, a CubeSat roughly the size of a large Thermos flask, scheduled for launch later this year. Potential applications include space-based internet services, disaster monitoring, and lunar communications, where small satellites need to transmit data over vast distances.

This breakthrough demonstrates how traditional techniques can inspire cutting-edge solutions in space engineering. By leveraging centuries-old paper-folding methods, the team has created a lightweight, efficient antenna that could transform satellite communications.