High-selectivity electromagnetic bandgap device and antenna system
First Claim
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1. An antenna system comprising:
- an antenna element;
an electromagnetic bandgap element proximate the antenna element;
wherein the electromagnetic bandgap element is optimized for narrow bandwidth operation thereby providing radiofrequency selectivity.
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Abstract
An antenna system includes an antenna element and an electromagnetic bandgap element proximate the antenna element wherein the electromagnetic bandgap element is optimized for narrow bandwidth operation thereby providing radiofrequency selectivity to the antenna system. Preferably the electromagnetic bandgap element is tunable such as through use of a bias-alterable dielectric substrate or other tuning mechanism. The design approach also provides a means of creating an ultra-thin low-profile narrowband tunable channel selective antenna system suitable for low frequency applications.
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Citations
30 Claims
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1. An antenna system comprising:
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an antenna element;
an electromagnetic bandgap element proximate the antenna element;
wherein the electromagnetic bandgap element is optimized for narrow bandwidth operation thereby providing radiofrequency selectivity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An artificial magnetic conducting (AMC) surface for use in an antenna system to provide a narrow bandwidth of operation and radio frequency selectivity, comprising:
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a substrate of a dielectric material;
the substrate patterned with conductive patches to provide a unit cell geometry;
wherein the unit cell geometry is optimized for narrow bandwidth operation thereby providing radiofrequency selectivity. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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29. An antenna system comprising:
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an antenna element;
an electromagnetic bandgap element proximate the antenna element;
the electromagnetic bandgap element comprising a substrate of a dielectric material patterned with conductive patches to provide a unit cell geometry suitable for narrow bandwidth operation of less than about 5 percent of an operating frequency to thereby provide radiofrequency selectivity;
the operating frequency less than about 1 GHz. - View Dependent Claims (30)
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Specification