Antenna system for a ground station communicating with the NTNU Test Satellite (NUTS)
This thesis describes the design process of a helical antenna for the ground
station at NTNU. The helical antenna is designed for the proposed telemetry
link at 437 MHz. The main focus areas have been to be able to make the
helical antenna small enough to be safely mounted on the roof of the building
belonging to the Department of Electronics and Telecommunication, while at
the same time having a big enough helical antenna to achieve the required gain,
which is 16 dB. An earlier link budget has been revisited and the requirements
has been adjusted accordingly. The theory section provides the equations that
the design is based on. In the design and simulation section, articles from the
Institute of Electrical and Electronics Engineers (IEEE) have been useful to see
if the calculated design with wanted characteristics is achievable. The simulation
process gives an understanding of what happens with the electromagnetic field
and the gain when different physical dimensions are changed. A scale model has
been constructed and measurements have been done in the anechoic chamber.
The measurements shows an agreement with the simulations. The evaluation
shows that it is sufficient with two antennas in an array, instead of four which
has been previously proposed.
Place, publisher, year, edition, pages
Institutt for elektronikk og telekommunikasjon , 2011. , 100 p.
ntnudaim:6371, MTEL elektronikk, Romteknologi og navigasjon
IdentifiersURN: urn:nbn:no:ntnu:diva-14711Local ID: ntnudaim:6371OAI: oai:DiVA.org:ntnu-14711DiVA: diva2:460141
Gutteberg, Odd, Professor