Figure 2: Umbra has a patent for an antenna designed to stow compactly for launch and expand in orbit with a series of ribs attached to a central hub. The SAR X-band antenna generates an industry-leading 1,200 MHz bandwidth and is covered in a flexible reflective material. The Umbra microsatellite packs a huge antenna into a small volume, with an overall spacecraft mass of ~65 kg (image credit: Umbra)