Dipole Antenna backed by 8-CBU AMC-EBG and 8-CBU FSS at 5.8 GHz
Keywords:Artificial Magnetic Conductor (AMC), Electromagnetic Band Gap (EBG), Frequency Selective Surface (FSS), dipole antenna, 8 Connected Branches Uniplanar AMC-EBG, 8 Connected Branches Uniplanar FSS
This paper investigates the performances of dipole antenna, incorporated with and without 8-Connected Branches Uniplanar Artificial Magnetic Conductor-Electromagnetic Band Gap (8-CBU AMC-EBG) and 8 Connected Branches Uniplanar Frequency Selective Surface (8-CBU FSS) at 5.8 GHz. The designs are simulated on Arlon AD-350 with permittivity, ɛr = 3.50, thickness, h = 1.016 mm and tangent loss, δ = 0.0026. Due to the flexibility of the material used as a substrate, the effect of different angle is investigated. Both the 8-CBU AMC-EBG and 8 the CBU FSS act as a reasonably good ground plane for the dipole antenna and help to improve the realized gain and the radiation patterns by pushing the front lobe, while at the same time reducing the side lobes. The maximum improvements led by dipole antenna with 8-CBU AMC-EBG are 8.54 dB of realized gain is achieved and approximately 6.53 dBi of the directivity of front lobe is pushed higher than the dipole alone while the side lobe is significantly lower than with 8-CBU FSS. The designs of 8-CBU AMC-EBG and 8-CBU FSS can be applied to dipole antenna application such as Wi-fi and other on-body communication devices.
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