Abstract
This paper illustrates the spurious radiation of a wideband feed-network placed above and below the antenna ground-plane. Two identical Wang-shaped patch antennas excited by using H-plane oriented feed-network, with small difference on their antenna heights and feed-probe lengths. As expected, the one with wideband balun arranged below ground-plane (Antenna B) results a better cross-polarisation suppression whereas wideband balun placed above ground-plane (Antenna A) having a better impedance matching. Antenna B has good isolation against cross-polarization due to the main feed-line currents, flowing in H-plane direction. Interestingly, Antenna B exhibits a higher antenna gain and a higher efficiency. However, both antennas are found to have the similar 10-dB return-loss bandwidths.
| Original language | English |
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| Title of host publication | Proceedings of the 2010 International Symposium on Antennas and Propagation, 23-26 November 2010, Macao, China |
| Publisher | University of Macau |
| Number of pages | 4 |
| Publication status | Published - 2010 |
| Event | International Symposium on Antennas and Propagation - Duration: 8 Jul 2012 → … |
Conference
| Conference | International Symposium on Antennas and Propagation |
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| Period | 8/07/12 → … |
Keywords
- patch antennas
- microstrip antennas
- bandwith