Optically transparent phase array antenna
First Claim
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1. A phase array antenna comprising:
- a first dielectric layer formed of a material that is optically transparent;
an electrically conductive and optically transparent ground plane layer secured on one side of said first dielectric layer;
a second optically transparent dielectric layer formed over said first dielectric layer, and an optically transparent conducting layer formed on the second dielectric layer and having a plurality of slots that are arranged in a plurality of rows; and
an optically transparent beam forming network formed on the first dielectric layer and formed as a plurality of linear microstrip signal tracks, wherein a respective linear microstrip signal track extends under a respective row of slots.
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Abstract
A phase array antenna of the present invention includes a dielectric layer formed of a material that is optically transparent. An electrically conductive and optically transparent ground plane layer is secured on one side of the dielectric layer. An array of optically transparent antenna elements are positioned over the opposing side of the dielectric layer from the ground plane layer. An optically transparent beam forming network is formed on the dielectric layer on the same side as the optically transparent antenna elements and is operatively connected to the array of optically transparent antenna elements.
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Citations
21 Claims
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1. A phase array antenna comprising:
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a first dielectric layer formed of a material that is optically transparent;
an electrically conductive and optically transparent ground plane layer secured on one side of said first dielectric layer;
a second optically transparent dielectric layer formed over said first dielectric layer, and an optically transparent conducting layer formed on the second dielectric layer and having a plurality of slots that are arranged in a plurality of rows; and
an optically transparent beam forming network formed on the first dielectric layer and formed as a plurality of linear microstrip signal tracks, wherein a respective linear microstrip signal track extends under a respective row of slots. - View Dependent Claims (2, 3, 4)
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5. A phase array antenna comprising:
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a dielectric layer having opposing sides and formed of a material that is optically transparent;
an electrically conductive and optically transparent ground plane layer secured on one side of said dielectric layer;
an array of optically transparent antenna elements positioned over the opposing side of the dielectric layer from the ground plane layer;
an optically transparent beam forming network formed on the dielectric layer on the same side as the optically transparent antenna elements, and operatively connected to array of optically transparent antenna elements; and
a plug-in card slot operatively connected to said beam forming network and configured for receiving a plug-in card and connecting to a beam forming network contained within the plug-in card for imparting a desired phase shift and scanning the beam to a desired location. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A phase array antenna comprising:
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a first dielectric layer having opposing sides and formed of a material that is optically transparent;
an array of driven antenna elements and interconnected beam forming network positioned directly on one side of the first dielectric layer, wherein said array of driven antenna elements and interconnected beam forming network are optically transparent;
a ground plane layer positioned on the opposing side of the first dielectric layer and formed of a material that is optically transparent;
a second dielectric layer positioned over the side of the first dielectric layer having the array of driven antenna elements and formed of a material that is optically transparent;
an array of parasitic antenna elements formed on the second dielectric layer opposite the driven antenna elements; and
an optically transparent adhesive layer applied on the ground plane layer for adhesively securing the phase array antenna to a surface. - View Dependent Claims (15, 16, 17, 18)
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19. A phase array antenna comprising:
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a window glass pane having opposing sides;
a conductive ground plane attached to one side of the window glass pane, wherein the conductive ground plane is formed of a material that is optically transparent;
an array of antenna elements secured on the opposing side of the window glass pane from the conductive ground plane and arranged in a plurality of rows;
a beam forming network secured on the window glass pane and connected to the array of antenna elements; and
a phase shifter connected to the beam forming network for imparting a desired phase shift to the antenna elements and controlling one of at least elevation or azimuth. - View Dependent Claims (20, 21)
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Specification