Invention Grant
US08299964B2 System and method for adaptive correction to phased array antenna array coefficients through dithering and near-field sensing
有权
通过抖动和近场感测对相控阵天线阵列系数进行自适应校正的系统和方法
- Patent Title: System and method for adaptive correction to phased array antenna array coefficients through dithering and near-field sensing
- Patent Title (中): 通过抖动和近场感测对相控阵天线阵列系数进行自适应校正的系统和方法
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Application No.: US12708785Application Date: 2010-02-19
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Publication No.: US08299964B2Publication Date: 2012-10-30
- Inventor: Ramakrishna Janaswamy , Dev Vrat Gupta
- Applicant: Ramakrishna Janaswamy , Dev Vrat Gupta
- Applicant Address: US MA Boston US MA Acton
- Assignee: University of Massachusetts,Newlans, Inc.
- Current Assignee: University of Massachusetts,Newlans, Inc.
- Current Assignee Address: US MA Boston US MA Acton
- Agency: Mirick, O'Connell, DeMallie & Lougee, LLP
- Agent Brian M. Dingman
- Main IPC: H01Q3/00
- IPC: H01Q3/00 ; G01S7/40
Abstract:
A system and method of adaptively correcting the excitation or receive coefficients for a phased array antenna. For a transmitting antenna, a sensor located in the near field of the antenna is used to sense the antenna transmission. A reference signal that represents the sensor response to a desired antenna transmission that is accomplished with predetermined excitation coefficients is determined. The magnitudes and phases of the excitation coefficients are modified in a predetermined manner to create a modified antenna transmission. An actual signal that represents the sensor response to the modified antenna transmission is then determined. The excitation coefficients are then corrected using the differences between the reference signal and the actual signal, such that the modified antenna transmission becomes closer to the desired antenna transmission. The method and system also apply to a receiving antenna.
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