Miniature patch antenna with increased gain
AssigneeOrigin Gps Ltd.
InventorHaim Goldberger
Life of this patent
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Abstract
The present invention, relates to the preparation of a patch antenna with a specific effective dielectric constant; and a reduced dissipation factor. In an exemplary embodiment of the invention, size requirements and the desired resonant signal frequency dictate the permittivity value of the dielectric material to be used between the patch plate and the ground plate. Instead of using a dielectric material with the calculated permittivity value and its given dissipation factors a two layer dielectric of the same size with an effective dielectric constant that is equal to the desired dielectric constant, is used to replace the dielectric material and reduce the dissipation factor.
Claims18
A method of creating a dielectric material with a specific dielectric constant and a reduced dissipation factor, comprising:
- selecting two or more dielectric materials to be used instead of a single dielectric material with the specific dielectric constant, wherein at least one of the dielectric materials has a dielectric constant lower than the specific dielectric constant and at least one of the dielectric materials has a dielectric constant greater than the specific dielectric constant;
- calculating a height for each of the dielectric materials so that if placed one on top of another instead of using the single dielectric material the effective dielectric constant is equal to the dielectric constant of the single dielectric material;
- calculating the effective dissipation factor resulting from the selected dielectric materials and calculated heights;
- wherein at least one of the selected dielectric materials has a dissipation factor lower than the dissipation factor of the single dielectric material;
- and the other selected dielectric materials have a dissipation factor such that the calculated effective dissipation factor is less than the dissipation factor of the single dielectric constant.
A patch antenna with a reduced dissipation factor and a specific dielectric constant, comprising:
- a conducting patch layer;
- a conducting ground layer;
- two or more dielectric layers between the conducting layers;
- wherein each dielectric layer has a different dielectric constant and a pre-selected height;
- such that the two or more dielectric layers effectively function as a single dielectric material with said specific dielectric constant;
- and
- wherein said two or more dielectric layers have dissipation factors which together effectively function as a single dielectric material having an effective dissipation factor that is less than the dissipation factor of a given dielectric material with said specific dielectric constant.
Dependencies are inferred from the claim text.