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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Córdoba-Erazo, M.F. Rodríguez-Solis, R.A. |
| Copyright Year | 2010 |
| Description | Author affiliation: Department of Electrical and Computer Engineering, University of Puerto Rico, Mayagüez, PR, 00681 (Córdoba-Erazo, M.F.; Rodríguez-Solis, R.A.) |
| Abstract | Folded slot antennas (FSAs) offer some of the attractive characteristics of the slot antennas, such as small size, light weight, wider bandwidth and that can be flush-mounted on surfaces. They also present an input impedance about four times lower than the slot antenna at the first useful resonance (f0) [1], facilitating the matching to 50 Ω and providing a wider bandwidth. However, FSAs, as well as slot antennas, are free to radiate from both sides of the substrate. This limits their applications in multilayer circuits, near metallic objects and near the earth. Placing a cavity behind the slot focuses the antenna radiation on one side of the substrate, suppressing backward radiation. This configuration is known as cavity backed slot antenna (CBSA). Many studies have been carried out about CBSAs. One of the earliest works was presented by [2], who used the Green's function technique to find the input admittance of the CBSA. Experimental works about input impedance of the CBSA have been proposed by [3], [4] and [5], in which was found that the input impedance of the antenna can be reduced as the cavity depth decreases. Although there are many works related with CBSAs, studies about CBFSAs have not been reported and there is no information about input impedance and radiation characteristics, to the knowledge of the authors. Since FSAs have lower input impedance than slots antennas, CBFSAs with shallow cavities could be of great interest in wireless devices, active and passive arrays, ground penetrating radars and airborne devices due to their compact size, flush-mounting capability, light weight and unidirectional pattern. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 414603 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424449675 |
| ISSN | 15223965 |
| DOI | 10.1109/APS.2010.5562099 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-07-11 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Cavity resonators Antenna measurements Slot antennas Substrates Impedance Coplanar waveguides |
| Content Type | Text |
| Resource Type | Article |
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