Back to results
US 6,856,286 B2Granted
Dual band spiral-shaped antenna
AssigneeSkyCross, Inc.
InventorsYoung-Min Jo, Young-Ki Kim, Frank M. Caimi, John Charles Farrar, Mark D. Nelson, Kerry Lane Greer
Life of this patent
Estimating the term…
Abstract
A planar antenna comprising a spiral conductive surface comprising an inner spiral segment and an outer spiral segment. A shorting leg for connection to a ground plane and a feed leg responsive to the antenna signal (in the transmit and the receive modes) extend downwardly from the plane of the spiral segments. Performance characteristics of the antenna are responsive to the configuration and spacing of the spiral segments and the distance between the antenna and the ground plane.
Claims32
An antenna comprising:
- a conductive surface having a spiral shape;
- a ground plane spaced apart from the conductive surface;
- a shorting leg electrically connected to the conductive surface and extending from a plane of the conductive surface, and further having a distal end connected to the ground plane;
- a signal feed leg electrically connected to the conductive surface and extending from the plane of the conductive surface;
- and
- wherein the conductive surface defines a first opening and a second opening disposed relative to the shorting leg and the signal feed leg, respectively such that if the shorting leg or the signal feed leg is pivoted into the plane of the conductive surface, the shorting leg or the signal feed leg is received into the first opening and the second opening, respectively.
3 more elements
An antenna comprising:
- a conductive surface having a spiral shape;
- a ground plane spaced apart from the conductive surface;
- a shorting leg electrically connected to the conductive surface and extending from the a plane of the conductive surface, and further having a distal end connected to the ground plane;
- a signal feed leg electrically connected to the conductive surface and extending from the plane of the conductive surface;
- a substrate having a conductive layer overlying a dielectric layer, wherein the conductive surface is formed in the conductive layer, and wherein the spiral shape comprises an origin proximate the center of the conductive surface and a terminus proximate the perimeter of the conductive surface, and wherein the shorting leg comprises a substantially circular conductive element connected to the spiral shape between the origin and the terminus thereof, and wherein the signal feed leg comprises a substantially circular conductive element having a diameter smaller than the diameter of the shorting leg, and connected to the spiral shape between the shorting leg and the origin.
2 more elements
A method for forming an antenna comprising:
- forming a radiator by shaping a conductive material in a spiral configuration;
- forming a first finger in the radiator by removing conductive material from a first region of the radiator so as to from the first finger therein, wherein three edges of the first finger are detached from the conductive material and the fourth edge of the first finger forms a first deformable joint with the conductive material;
- forming a second finger in the radiator by removing conductive material from a second region of the radiator so as to form the second finger therein, wherein three edges of the second finger are detached from the conductive material and the fourth edge of the second finger forms a second deformable joint with the conductive material;
- forming a shorting leg by bending the first finger along the first deformable joint such that the shorting leg extends downwardly from the plane of the radiator;
- electrically connecting the shorting leg to a ground plane;
- and
- forming a signal feed leg by bending the second finger along the second deformable joint such the signal feed leg extends downwardly from the plane of the radiator.
4 more elements
Dependencies are inferred from the claim text.