dc.contributor.author |
Kumar, A. V. Praveen |
|
dc.date.accessioned |
2023-03-06T07:04:34Z |
|
dc.date.available |
2023-03-06T07:04:34Z |
|
dc.date.issued |
2019-01 |
|
dc.identifier.uri |
https://ietresearch.onlinelibrary.wiley.com/doi/full/10.1049/iet-map.2018.5136 |
|
dc.identifier.uri |
http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/9514 |
|
dc.description.abstract |
A cylindrical dielectric resonator antenna (DRA) has been excited with a microstrip line in the HEM11δ mode. It is demonstrated that at the operating frequency, minimum cross-polarisation occurs when the lateral dimension of the substrate is slightly higher than half a free-space wavelength (λ0). This occurs when direct waves from the DRA interfere appropriately with the waves that are diffracted from the substrate edges. For a 50 Ω microstrip-fed cylindrical DRA, numerical prediction suggests a substrate of lateral dimension 0.58λ0 for the lowest possible cross-polarisation. In addition, the above optimum substrate size is constant irrespective of the substrate shape (square or circle) or dielectric resonator (DR) properties (permittivity and aspect ratio) for a given substrate permittivity. Numerical results are experimentally verified for a DRA with permittivity 24 and aspect ratio 1.33, for both square and circular substrates at the respective operating frequencies. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
IET |
en_US |
dc.subject |
EEE |
en_US |
dc.subject |
Dielectric Resonator Antenna (DRA) |
en_US |
dc.subject |
Cross-polarisation |
en_US |
dc.title |
Substrate size selection of microstrip-fed cylindrical dielectric resonator antennas for lowering the cross-polarisation |
en_US |
dc.type |
Article |
en_US |