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Single-Layer Metamaterial Absorber for Radar Application
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för elektronik, matematik och naturvetenskap. Radarbolaget AB.
2016 (engelsk)Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
Abstract [en]

In the radar systems, the crosstalk or antenna-to-antenna interference between the radar antennas is useful in some cases. However in some application the received signal is too weak such as wall crack detection and it might affect the accuracy of the radar system. The aim of this thesis is to design, fabricate and test a single layer metamaterial absorber operates from 1 GHz to 4 GHz. The metamaterial absorber can be used as a barrier between the antennas or even in the antenna housing in order to reduce or prevent the antenna-to-antenna interference.

The method used to fulfill the goal is to shift the frequency response of a known structure by changing the dimension to the wanted band. The software HFSS used to design and simulate the proposed structure which made of L-shaped copper placed diagonally over a substrate separating it from a continuous copper plane. The simulation results exhibit a wideband absorption response of 2.42 GHz ranging from 1.9 GHz to 4.32 GHz. The structure has been simulated over the dimension variation to investigate the flexibility and sensitivity of the designed single layer structure.

The fabricated metamaterial absorber measured over the direct incident waves. The structure reveals a wideband absorption response of 1.69 GHz ranging from 2.23 GHz up to 3.92 GHz with more than 90% absorptivity. The structure also exposed that the response of the structure starts to create two bands within the wanted band by increasing the angle of the incident waves. 10° polarization angle gives more than 80% absorptivity response. 

sted, utgiver, år, opplag, sider
2016. , s. 38
Emneord [en]
Metamaterials Absorber
HSV kategori
Identifikatorer
URN: urn:nbn:se:hig:diva-22826OAI: oai:DiVA.org:hig-22826DiVA, id: diva2:1049480
Eksternt samarbeid
Radarbolaget AB
Fag / kurs
Electronics
Utdanningsprogram
Electronics/Telecommunications – master’s programme (two years) (swe or eng)
Presentation
2016-09-15, 11:320, University of Gävle, Gävle, 13:00 (engelsk)
Veileder
Examiner
Tilgjengelig fra: 2017-01-26 Laget: 2016-11-24 Sist oppdatert: 2017-01-26bibliografisk kontrollert

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