Invention Grant
- Patent Title: Systems and methods for circular-polarized beam forming and steering based on the superposition of circular modes for communication and radar systems
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Application No.: US17830502Application Date: 2022-06-02
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Publication No.: US11923612B2Publication Date: 2024-03-05
- Inventor: Fatemeh Akbar , Behzad Yektakhah
- Applicant: Fatemeh Akbar , Behzad Yektakhah
- Applicant Address: IR MI Tehran
- Assignee: Sharif University of Technology
- Current Assignee: Sharif University of Technology
- Current Assignee Address: IR Tehran
- Main IPC: H01Q21/29
- IPC: H01Q21/29 ; H01Q5/371 ; H01Q9/26 ; H01Q9/40 ; H01Q21/20

Abstract:
An antenna comprises a substantially circular ground plane with an upper surface and a defined center. A plurality of radiating elements are placed radially on the upper surface, arranged at constant angles around the defined center to, when electrically excited, create a plurality of circularly polarized electromagnetic emissions. Each radiating element of the plurality of radiating elements is in electrical communication with an electromagnetic source via an electrically conductive feed, the electromagnetic source configured, when in use, to create a radial excitation current on the radiating element, and further configured, when in use, to provide phase and amplitude control of the excited current on the radiating element for both beam forming and 360 degree beam steering by superposing omnidirectional circularly polarized electromagnetic emissions.
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