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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Mobashsher, A.T. Abbosh, A. |
| Copyright Year | 2002 |
| Abstract | Wideband antennas operating at L-band are rapidly finding their applications in various microwave-based medical diagnostic systems. To increase signal penetration while working in a limited space, these systems require compact unidirectional antennas. To meet these requirements, a three-dimensional folded dipole antenna is presented. It is composed of a slot-loaded coaxially fed printed slab and a U-shaped copper structure that completes the folded dipole loop. An appropriate slot loading enables achieving significant improvements of the proposed design in terms of bandwidth, gain, and front-to-back ratio compared to the conventional folded dipole antenna. A parametric analysis is performed for a deep understanding of the antenna's mechanism. A fabricated prototype demonstrates 57% fractional bandwidth, centered at 1.44 GHz with an average gain of 3.7 dBi over that band. The antenna has a directional radiation pattern with around 9 dBi front-to-back ratio and -10-dB cross-polarization levels along the boresight direction. The overall volume of the antenna is 0.24 × 0.10 × 0.05 λ3, where λ is the wavelength of the lowest operating frequency. |
| Sponsorship | IEEE Antennas and Propagation Society |
| Starting Page | 798 |
| Ending Page | 801 |
| Page Count | 4 |
| File Size | 870669 |
| File Format | |
| ISSN | 15361225 |
| Volume Number | 13 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2014-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Dipole antennas Directive antennas Antenna radiation patterns Antenna measurements Broadband antennas Slot antennas wideband antenna Folded dipole antenna medical diagnostic system unidirectional radiation pattern |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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