Reduced weight artificial dielectric antennas and method for providing the same
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United States of America Patent
Stats
-
May 20, 2003
Grant Date -
Jan 30, 2003
app pub date -
Jul 26, 2001
filing date -
Jul 26, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An artificial anisotropic dielectric material can be used as a microstrip patch antenna substrate. The artificial dielectric can be easily designed for the purpose of weight reduction. Preferably, the artificial dielectric is comprised of a periodic stack of low and high permittivity layers. The layers can be oriented vertically below the patch to support electric fields consistent with desired resonant modes. Substrates may be engineered for both linearly and circularly polarized patch antennas. Antenna weight can be reduced to 1/6th up to 1/30th of the original weight using different types of high permittivity layers. This concept has numerous applications in electrically small and lightweight antenna elements such as PIFA antennas. In accordance with one aspect of the invention, the artificial dielectric is comprised of an interlocking structure of low and high permittivity layers for ease of assembly and for overall stability. In accordance with another aspects the high permittivity layers can be comprised of FSS cards, and can include metallized tabs for further simplification of assembly.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 30 Citation Count
- H01Q Class
- 76.19 % this patent is cited more than
- 22 Age
