© The Institution of Engineering and Technology
A novel dual-polarised ultra-wideband patch antenna is proposed. This antenna consists of a square ring patch and four inclined triangular-shaped patches. The vertices of the triangular patches are connected to the microstrip lines which are printed on the bottom layer of the grounded FR4 substrate. To realise the differential feed mechanism for reducing the coupling between the two polarisation ports and the cross-polarisation level, two identical tapered baluns are used to excite the antenna. The antenna prototype can provide two orthogonal polarisations with an impedance bandwidth (|S 11| ≤ −10 dB) of 113.2% and isolation of over 28 dB across the whole operating frequency band. The measured antenna gain varies from 2.09 to 7.66 dBi for port 1 and from 0.02 to 6.77 dBi for port 2 with a 3 dB gain bandwidth of 96.3%.
References
-
-
1)
-
1. Sugitani, T., Kubota, S., Toya, A., Xiao, X., Kikkawa, T.: ‘A compact 4 × 4 planar UWB antenna array for 3-D breast cancer detection’, IEEE Antennas Wirel. Propag. Lett., 2013, 12, pp. 733–736 (doi: 10.1109/LAWP.2013.2270933).
-
2)
-
2. Charvat, G.L., Kempel, L.C., Rothwell, E.J., Coleman, C.M., Mokole, E.L.: ‘A through-dielectric ultrawideband (UWB) switched-antenna-array radar imaging system’, IEEE Trans. Antennas Propag., 2012, 60, (11), pp. 5495–5500 (doi: 10.1109/TAP.2012.2207663).
-
3)
-
4. Adamiuk, G., Beer, S., Wiesbeck, W., Zwick, T.: ‘Dual-orthogonal polarised antenna for UWB-IR technology, IEEE Antennas Wirel. Propag. Lett., 2009, 8, pp. 981–984 (doi: 10.1109/LAWP.2009.2029880).
-
4)
-
6. Wu, B., Luk, K.M.: ‘A UWB unidirectional antenna with dual-polarisation’, IEEE Trans. Antennas Propag., 2011, 59, (11), pp. 4033–4040 (doi: 10.1109/TAP.2011.2164189).
-
5)
-
3. Elsherbini, A., Sarabandi, K.: ‘Dual-polarised coupled sectorial loop antennas for UWB applications’, IEEE Antennas Wirel. Propag. Lett., 2011, 10, pp. 75–78 (doi: 10.1109/LAWP.2011.2109366).
-
6)
-
5. Adamiuk, G., Zwick, T., Wiesbeck, W.: ‘Compact, dual-polarised UWB antenna embedded in a dielectric’, IEEE Trans. Antennas Propag., 2010, 58, (2), pp. 279–286 (doi: 10.1109/TAP.2009.2037712).
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2013.2607
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