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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Motevasselian, A. Ellgardt, A. Jonsson, B.L.G. |
| Copyright Year | 2002 |
| Abstract | In this letter, we use a helix to excite two orthogonal HE11δ modes in phase quadrature in a hollow cylindrical dielectric resonator antenna to generate circular polarization. As compared to our previous work, it is shown that replacing the cylindrical dielectric resonator antenna with a hollow cylindrical-shaped one leads to a significant enhancement in the 3-dB axial-ratio bandwidth. A design guideline is provided, and three design cases are presented. A prototype for one of the designs is fabricated and measured. Measured and simulated data are presented and discussed. It is shown that the 3-dB axial-ratio bandwidth increases as the wall thickness of the hollow cylindrical dielectric resonator decreases. Furthermore, a reduction in the wall thickness requires a longer helix exciter for similar performance . |
| Sponsorship | IEEE Antennas and Propagation Society |
| Starting Page | 535 |
| Ending Page | 538 |
| Page Count | 4 |
| File Size | 726269 |
| File Format | |
| ISSN | 15361225 |
| Volume Number | 12 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | ring Circular polarization dielectric resonator antenna (DRA) helix hollow cylindrical probe feed |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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