Design Studies of Ultra-Wideband Microstrip Antennas with a Small Capacitive Feed
The design of an ultra-wideband microstrip patch antenna with a small coplanar capacitive feed strip is presented. The proposed rectangular patch antenna provides an impedance bandwidth of nearly 50%, and has stable radiation patterns for almost all frequencies in the operational band. Results prese...
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| Format: | Article |
| Language: | English |
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Wiley
2007-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2007/67503 |
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| _version_ | 1832546519747657728 |
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| author | Veeresh G. Kasabegoudar Dibyant S. Upadhyay K. J. Vinoy |
| author_facet | Veeresh G. Kasabegoudar Dibyant S. Upadhyay K. J. Vinoy |
| author_sort | Veeresh G. Kasabegoudar |
| collection | DOAJ |
| description | The design of an ultra-wideband microstrip patch antenna with a small coplanar capacitive feed strip is presented. The proposed rectangular patch antenna provides an impedance bandwidth of nearly 50%, and has stable radiation patterns for almost all frequencies in the operational band. Results presented here show that such wide bandwidths are also possible for triangular and semiellipse geometries with a similar feed arrangement. The proposed feed is a very small strip placed very close to the radiator on a substrate above the ground plane. Shape of the feed strip can also be different, so long as the area is not changed. Experimental results agree with the simulated results. Effects of key design parameters such as the air gap between the substrate and the ground plane, the distance between radiator patch and feed strip, and the dimensions of the feed strip on the input characteristics of the antenna have been investigated and discussed. As demonstrated here, the proposed antenna can be redesigned for any frequency in the L-, S-, C-, or X-band. A design criterion for the air gap has been empirically obtained to enable maximum antenna bandwidth for all these operational frequencies. |
| format | Article |
| id | doaj-art-3466060f0d11499495ac771197ceaff1 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2007-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-3466060f0d11499495ac771197ceaff12025-02-03T06:48:05ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772007-01-01200710.1155/2007/6750367503Design Studies of Ultra-Wideband Microstrip Antennas with a Small Capacitive FeedVeeresh G. Kasabegoudar0Dibyant S. Upadhyay1K. J. Vinoy2Microwave Laboratory, Electrical Communication Engineering department, Indian Institute of Science, Bangalore 560 012, IndiaMicrowave Laboratory, Electrical Communication Engineering department, Indian Institute of Science, Bangalore 560 012, IndiaMicrowave Laboratory, Electrical Communication Engineering department, Indian Institute of Science, Bangalore 560 012, IndiaThe design of an ultra-wideband microstrip patch antenna with a small coplanar capacitive feed strip is presented. The proposed rectangular patch antenna provides an impedance bandwidth of nearly 50%, and has stable radiation patterns for almost all frequencies in the operational band. Results presented here show that such wide bandwidths are also possible for triangular and semiellipse geometries with a similar feed arrangement. The proposed feed is a very small strip placed very close to the radiator on a substrate above the ground plane. Shape of the feed strip can also be different, so long as the area is not changed. Experimental results agree with the simulated results. Effects of key design parameters such as the air gap between the substrate and the ground plane, the distance between radiator patch and feed strip, and the dimensions of the feed strip on the input characteristics of the antenna have been investigated and discussed. As demonstrated here, the proposed antenna can be redesigned for any frequency in the L-, S-, C-, or X-band. A design criterion for the air gap has been empirically obtained to enable maximum antenna bandwidth for all these operational frequencies.http://dx.doi.org/10.1155/2007/67503 |
| spellingShingle | Veeresh G. Kasabegoudar Dibyant S. Upadhyay K. J. Vinoy Design Studies of Ultra-Wideband Microstrip Antennas with a Small Capacitive Feed International Journal of Antennas and Propagation |
| title | Design Studies of Ultra-Wideband Microstrip Antennas with a Small Capacitive Feed |
| title_full | Design Studies of Ultra-Wideband Microstrip Antennas with a Small Capacitive Feed |
| title_fullStr | Design Studies of Ultra-Wideband Microstrip Antennas with a Small Capacitive Feed |
| title_full_unstemmed | Design Studies of Ultra-Wideband Microstrip Antennas with a Small Capacitive Feed |
| title_short | Design Studies of Ultra-Wideband Microstrip Antennas with a Small Capacitive Feed |
| title_sort | design studies of ultra wideband microstrip antennas with a small capacitive feed |
| url | http://dx.doi.org/10.1155/2007/67503 |
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