Compact Dielectric Resonator Antennas With Ultrawide 60%-110% Bandwidth
The design of rectangular dielectric resonator antennas (DRA) with ultrawide bandwidths, in the range of 60-110%, is described. The DRA exploits multiple low-Q modes with overlapping bandwidths to achieve a wide contiguous bandwidth. This is achieved using a full-length, low-permittivity inset betwe...
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Published in | IEEE transactions on antennas and propagation Vol. 59; no. 9; pp. 3445 - 3448 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
New York, NY
IEEE
01.09.2011
Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
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Abstract | The design of rectangular dielectric resonator antennas (DRA) with ultrawide bandwidths, in the range of 60-110%, is described. The DRA exploits multiple low-Q modes with overlapping bandwidths to achieve a wide contiguous bandwidth. This is achieved using a full-length, low-permittivity inset between a higher permittivity dielectric volume and a ground plane. With the proposed dielectric arrangement and a feed inside DR, it is possible to efficiently couple a sufficient number of such overlapping modes to a 50 Ω feedline. The volume of such DRAs is also reduced by means of a finite planar conducting wall. These advantages led to an example design with a bandwidth that is significantly wide and at the same time has a smaller DR volume than conventional DRAs. A prototype antenna designed to operate in the FCC UWB band from 3.1 to 10.6 GHz has a dielectric volume of 12 × 8 × 15.2 mm 3 (or 1.7 × 10 -3 λ o 3 at 3.1 GHz), and an average measured gain of 5 dB over the band. |
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AbstractList | The design of rectangular dielectric resonator antennas (DRA) with ultrawide bandwidths, in the range of 60-110%, is described. The DRA exploits multiple low-Q modes with overlapping bandwidths to achieve a wide contiguous bandwidth. This is achieved using a full-length, low-permittivity inset between a higher permittivity dielectric volume and a ground plane. With the proposed dielectric arrangement and a feed inside DR, it is possible to efficiently couple a sufficient number of such overlapping modes to a 50 Omega feedline. The volume of such DRAs is also reduced by means of a finite planar conducting wall. These advantages led to an example design with a bandwidth that is significantly wide and at the same time has a smaller DR volume than conventional DRAs. A prototype antenna designed to operate in the FCC UWB band from 3.1 to 10.6 GHz has a dielectric volume of 12 8 15.2 mm 3 (or 1.7 10 - 3 lambda 0 3 at 3.1 GHz), and an average measured gain of 5 dB over the band. The design of rectangular dielectric resonator antennas (DRA) with ultrawide bandwidths, in the range of 60-110%, is described. The DRA exploits multiple low-Q modes with overlapping bandwidths to achieve a wide contiguous bandwidth. This is achieved using a full-length, low-permittivity inset between a higher permittivity dielectric volume and a ground plane. With the proposed dielectric arrangement and a feed inside DR, it is possible to efficiently couple a sufficient number of such overlapping modes to a 50 [Formula Omitted] feedline. The volume of such DRAs is also reduced by means of a finite planar conducting wall. These advantages led to an example design with a bandwidth that is significantly wide and at the same time has a smaller DR volume than conventional DRAs. A prototype antenna designed to operate in the FCC UWB band from 3.1 to 10.6 GHz has a dielectric volume of 12[Formula Omitted]8[Formula Omitted]15.2 mm[Formula Omitted] (or [Formula Omitted] at 3.1 GHz), and an average measured gain of 5 dB over the band. The design of rectangular dielectric resonator antennas (DRA) with ultrawide bandwidths, in the range of 60-110%, is described. The DRA exploits multiple low-Q modes with overlapping bandwidths to achieve a wide contiguous bandwidth. This is achieved using a full-length, low-permittivity inset between a higher permittivity dielectric volume and a ground plane. With the proposed dielectric arrangement and a feed inside DR, it is possible to efficiently couple a sufficient number of such overlapping modes to a 50 Ω feedline. The volume of such DRAs is also reduced by means of a finite planar conducting wall. These advantages led to an example design with a bandwidth that is significantly wide and at the same time has a smaller DR volume than conventional DRAs. A prototype antenna designed to operate in the FCC UWB band from 3.1 to 10.6 GHz has a dielectric volume of 12 × 8 × 15.2 mm 3 (or 1.7 × 10 -3 λ o 3 at 3.1 GHz), and an average measured gain of 5 dB over the band. |
Author | Esselle, K. P. Bird, T. S. Yuehe Ge |
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Keywords | Conducting wall Dielectric resonator antenna (DRA) Prototype Volume Rectangular resonator FCC stacked antenna ultrawideband (UWB) Dielectric resonator antennas Permittivity Ultra wide band |
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SubjectTerms | Antenna measurements Antennas Applied sciences Bandwidth Dielectric resonator antenna (DRA) Dielectric resonator antennas Dielectrics Exact sciences and technology FCC Ground plane Mathematical analysis Noise levels Probes Radiocommunications Resonant frequency Resonators stacked antenna Telecommunications Telecommunications and information theory Ultra wideband antennas ultrawideband (UWB) Walls |
Title | Compact Dielectric Resonator Antennas With Ultrawide 60%-110% Bandwidth |
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