An Ultra-Compact Impulse Radiating Antenna for Space Applications

"Compact Ultra-Wideband (UWB) antennas with broad bandwidth could be of great use in a variety of space-based applications, including radar, communications, and surveillance. The challenge is to deploy a lightweight UWB antenna that is stowable in a smallvolume, that is automatically deployable, and that will be resistant to the harsh space environment. To overcome these challenges we propose an Ultra-Compact Impulse Radiating Antenna (IRA) that is lightweight and is automatically deployed into the shapeof an umbrella. We will implement this by using a telescoping center support rod and Z-folded ribs. We will also incorporate an automated deployment mechanism that will allow the antenna to be opened automatically. The harsh space environment will requirethe use of materials that are resistant to high ambient radiation levels and high temperature gradients. For this reason we are teamed with Physitron, Inc., because of their background in materials for space applications. During Phase II we will develop anUltra-Compact, Impulse Radiating Antenna (IRA) with a deployed diameter of around four feet. We will explore both focused and defocused designs, in order to tailor the beamwidth to a variety of applications. We will use materials that are resistant to theradiation and temperature gradients of the space environment. We will build and test a series of antennas, in order to refine our manufacturing technique. Testing will include a mecha