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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Psychoudakis, D. Volakis, J.L. |
| Copyright Year | 2005 |
| Description | Author affiliation: EECS Dept., Univ. of Michigan, Ann Arbor, MI, USA (Psychoudakis, D.) |
| Abstract | Use of high permittivity dielectrics in antenna design reduces the operating frequency but also introduces side effects such as lower gain and bandwidth. To provide an optimal compromise between size, gain and bandwidth, the paper presents a miniaturization scheme for a 15 cm (6 inch) square circularly polarized (CP), cavity-backed antenna using textured dielectric loading and a folded metallic strip feed. The proposed design has an operational frequency of 400-600 MHz, implying a linear size of 0.2/spl lambda//sub 0/ to 0.3/spl lambda//sub 0/. The challenge for a small size antenna design is to increase bandwidth while retaining a gain of 2-4 dBi. By carefully positioning high permittivity textured dielectrics within the aperture in conjunction with shape design, we show that bandwidth and gain are retained as compared to similar sized antennas in the literature. Our final design shows that the developed miniature UHF antenna is at least half the size of the best available. Concurrently, it delivers a remarkable 23% bandwidth with an equally remarkable gain of /spl sim/4 dBi. Validation/measured data for a prototype design are included. |
| Starting Page | 573 |
| Ending Page | 576 |
| File Size | 1060641 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780388836 |
| DOI | 10.1109/APS.2005.1552316 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-07-03 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Broadband antennas Polarization Loaded antennas UHF antennas Dielectrics Bandwidth Permittivity Frequency Antenna feeds Apertures |
| Content Type | Text |
| Resource Type | Article |
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