Intelligent antenna metamaterial method and apparatus
The present invention is a metamaterial-based object detection system. An intelligent antenna metamaterial interface (IAM) associates specific metamaterial unit cells into sub-arrays to adjust the beam width of a transmitted signal. The IAM is part of a sensor fusion system that coordinates a plurality of sensors, such as in a vehicle, to optimize performance. In one embodiment, an MTM antenna structure is probe-fed to create a standing wave across the unit cells.
1. An antenna structure, comprising:
a ground plane layer;
a dielectric layer positioned above the ground plane layer and having a radiating structure; and
a metamaterial layer positioned above the dielectric layer, wherein the metamaterial layer comprises an array of metamaterial unit cells configurable into subarrays,
wherein a subarray is changed to comprise a different number of metamaterial unit cells in response to a detected object.
2. The antenna structure as in claim 1 , wherein the radiating structure is to generate a wave front across the dielectric layer to meet the metamaterial layer.
3. The antenna structure as in claim 1 , wherein the controller configures the subarrays for multiple transmission beams.
4. The antenna structure as in claim 1 , further comprising an antenna probe feed structure coupled to the ground plane layer.
5. The antenna structure as in claim 4 , wherein the antenna probe feed structure supplies an input signal to generate the wave front.
6. The antenna structure as in claim 1 , wherein each metamaterial unit cell in the array of metamaterial unit cells radiates the input signal individually.
7. The antenna structure as in claim 1 , wherein the at least one metamaterial unit cell comprises a metamaterial shape and configuration to provide a phase shift.
8. The antenna structure as in claim 1 , wherein the at least one metamaterial unit cell comprises at least one controllable operational parameter to adjust a beam focus based on the field of view of the antenna structure.
9. The antenna structure as in claim 1 , wherein the antenna structure is coupled to a plurality of sensors for control of a vehicle.
10. The antenna structure as in claim 9 , wherein the plurality of sensors comprises at least one of a camera sensor, a laser sensor, an operational sensor, an infrastructure sensor, a user preference sensor, and an environmental sensor.
11. An antenna structure in a vehicle, comprising:
a signal source;
a ground plane layer;
a dielectric layer positioned above the signal source and the ground plane layer; and
a metamaterial layer positioned above the dielectric layer to radiate a signal received from the signal source, the metamaterial layer comprising a plurality of metamaterial unit cells configurable into a plurality of subarrays,
wherein a subarray from the plurality of subarrays is changed to comprise a different number of metamaterial unit cells based on an object detected in a path of the vehicle.
12. The antenna structure as in claim 11 , wherein the antenna structure is coupled to an Intelligent Antenna Metamaterial Interface (“IAM”) structure to control operational parameters of the antenna structure, the operational parameters comprising at least a set of voltages applied to the plurality of metamaterial unit cells.
13. The antenna structure as in claim 12 , wherein the IAM structure comprises an object detection module to detect the object in the path of the vehicle, the IAM structure to configure at least one of the plurality of subarrays to adjust a beam based on the position of the detected object.
14. The antenna structure as in claim 11 , wherein the plurality of subarrays comprises a plurality of subarrays configurable based on a direction the object is moving.
15. The antenna structure as in claim 11 , wherein the plurality of subarrays are preconfigured to anticipate a next action.
16. An antenna system in a vehicle comprising:
an antenna structure comprising:
a signal source;
a ground plane layer;
a dielectric layer positioned above the signal source and the ground plane layer; and
an array of metamaterial unit cells positioned above the dielectric layer, the array of metamaterial unit cells configurable into a plurality of subarrays; and
a controller coupled to the antenna structure to control a beam width of a signal radiated from the plurality of subarrays based on a received echo,
wherein a subarray from the plurality of subarrays is changed to comprise a different number of metamaterial unit cells based on an objected detected in a path of the vehicle.
17. The antenna system as in claim 16 , wherein the controller is to preconfigure at least one subarray in the plurality of subarrays to radiate a signal with a preconfigured beam width based on a sweep time for the antenna structure.
18. The antenna system as in claim 16 , wherein the controller is to change the beam width of the radiated signal based on changing weather and visibility conditions.