The low frequency radio waves of 10 kHz to 30 MHz are in a frequency band that is hard to measure when on Earth. As this frequency band holds information about the very start of the universe, scientists are eager to do measurements. Together with the TU Delft Space Institute, dr.
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The low frequency radio waves of 10 kHz to 30 MHz are in a frequency band that is hard to measure when on Earth. As this frequency band holds information about the very start of the universe, scientists are eager to do measurements. Together with the TU Delft Space Institute, dr. ir. Chris Verhoeven wants to set up a mission of a swarm of 50 12U-CubeSats that orbit the moon. The difficulty in measuring these radio waves lies in the required antenna length of 5 metres, while having extremely limited storage space within these CubeSats.
Over the past decades, several types of antennas, such as inflatables and origami-structures, have been studied and researched in order to develop one that can be deployed. Yet, no applicable antenna for CubeSats has been designed to sufficiently measure these radio waves.
In this thesis, a solution to this problem is proposed. Based on calculations, simulations and tests, an antenna is evaluated and improved upon. The end result is BEAD, a Beaded Expanding Antenna Design. BEAD is an antenna consisting of several parts that are connected and tightened with the help of a copper wire. Six antennas of 8.8 metres can be stored in one 12U-CubeSat. BEAD is a stiff and strong design that can handle manoeuvres of the satellite. At its end-of-life stage, the antennas can be retracted to minimise negative impacts.
