Method and Apparatus for Object Detection Incorporating Metamaterial Antenna Side Lobe Features

Content Provider	The Lens
Description	La présente invention concerne des procédés et des appareils pour une structure d'antenne en métamatériau, une zone d'éclairage en demi-puissance d'un lobe secondaire d'une transmission électromagnétique détectant des objets.
Abstract	The present inventions provide methods and apparatuses for a metamaterial antenna structure, wherein a half-power illumination area of a side lobe of an electromagnetic transmission detect objects.
Related Links	https://www.lens.org/lens/patent/010-508-400-541-210/frontpage
Language	English
Publisher Date	2019-10-17
Access Restriction	Open
Alternative Title	Procédé Et Appareil De Détection D'objet Intégrant Des Caractéristiques De Lobes Secondaires D'antenne En Métamatériau
Content Type	Text
Resource Type	Patent
Date Applied	2019-04-12
Agent	Chang, Marcia
Applicant	Metawave Corp
Application No.	2019027398
Claim	WHAT IS CLAIMED IS: A method for object detection, comprising: initiating a scan from a radar antenna unit: transmitting an electromagnetic beamform having a main lobe and side lobes, wherein the main lobe and side lobes each have a corresponding half-power illumination area; detecting an object in at least one of the half-power illumination areas; and adjusting the antenna such that the object is located within a side lobe half-power illumination area of the antenna. The method of claim 1, wherein adjusting the antenna comprises adjusting the gain of the antenna. The method of claim 1, wherein adjusting the antenna comprises adjusting the angle of the antenna with respect to a reference direction. The method of claim 3, wherein the antenna comprises a metamaterial array of elements and adjusting the angle of the antenna comprises changing a reactance of at least one of the elements of the metamaterial array. An antenna system, comprising: an antenna comprising a metamaterial array of elements; and an antenna controller coupled to the antenna and configured to: determine the location of an object; determine a target radiation pattern to track the object, wherein the radiation pattern includes a main lobe and at least one side lobe; and adjust parameters of the antenna so as to change a location of a half-power illumination area of a side lobe of the target radiation pattern. The antenna system as in claim 5, further comprising a power controller coupled to the antenna and configured to change the gain of the antenna. A radar system, comprising: a receive antenna having a plurality of radiating elements and at least one guard element, wherein the plurality of radiating elements are meta-structure elements; a radio controller providing separate feeds to the plurality of radiating elements and the at least one guard element; a phase control module adapted to control phase control units coupled to the plurality of radiating elements and the at least one guard element; and a controller to determine a direction of a radiation beam from the plurality of radiating elements. The radar system as in claim 7, wherein the radio controller has a main lobe feed structure and at least one guard lobe feed structure. The radar system as in claim 8, wherein control of the phase controllers changes the direction of the radiation beam. The radar system as in claim 9, wherein the main lobe feed structure provides a signal to the plurality of radiating elements at a first set of parameters and wherein the at least one guard lobe feed structure provides a second signal to the at least one guard element at a second set of parameters different from the first set of parameters. The radar system as in claim 10, wherein the controller is adapted to generate the radiation beam separate from a guard radiation beam from the guard elements, wherein the guard radiation beam overlaps side lobe portions of the radiation beam. The radar system as in claim 11, further comprising an angle of arrival calculation unit. The radar system as in claim 12, further comprising a perception engine for classification of detected objects. The radar system as in claim 10, wherein the controller is adapted to generate the radiation beam separate from a guard radiation beam from the guard elements, wherein the guard radiation beam overlaps a portion of side lobe portions of the radiation beam. The radar system as in claim 14, wherein the system changes a direction of the radiation beam in response to detection of an object in a side lobe beam. The radar system as in claim 1, wherein each radiation beam generated by the receive antenna and the at least one guard element are defined by a half power illumination area. detecting an object within a side lobe of an antenna; and adjusting the antenna directivity to position the side lobe of the antenna. The method as in claim 17, further comprising: determining an angle of arrival of a reflection from the object. The method as in claim 18, wherein the angle of arrival identifies location of the object in the side lobe. The method as in claim 19, further comprising adjusting a direction and a gain of the antenna in response to detecting the object.
CPC Classification	Radio Direction-Finding;Radio Navigation;Determining Distance Or Velocity By Use Of Radio Waves;Locating Or Presence-Detecting By Use Of The Reflection Or Reradiation Of Radio Waves;Analogous Arrangements Using Other Waves Antennas; I.E. Radio Aerials
Extended Family	068-897-629-730-892 152-511-775-993-762 075-641-597-218-564 099-371-538-052-158 010-508-400-541-210 027-616-784-397-291
Patent ID	2019200365
Inventor/Author	Achour Maha Shafi Shoaib Zaidi Abdullah Zarian Tom
IPC	G01S7/40 G01S7/28 G01S13/931
Status	Pending
Simple Family	099-371-538-052-158 075-641-597-218-564 152-511-775-993-762 068-897-629-730-892 027-616-784-397-291 010-508-400-541-210
CPC (with Group)	G01S13/02 G01S13/72 G01S13/931 G01S2013/0254 G01S2013/93271 H01Q1/3233 H01Q3/36 H01Q15/0086 G01S7/4026 G01S7/2813
Issuing Authority	United States Patent and Trademark Office (USPTO)
Kind	Patent Application Publication