Patent ID: 11921144
Assignee: KEYSIGHT TECHNOLOGIES, INC.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A method for modeling a phased array antenna having a target array of antenna elements, the method comprising:
selecting a small array of antenna elements wherein the small array of antenna elements has fewer antenna elements than the target array of antenna elements;
for each antenna element of the small array of antenna elements, capturing far field patterns for a plurality of signal frequencies;
capturing S-parameters for the small array of antenna elements for the plurality of signal frequencies, where each antenna element in the small array of antenna elements is regarded as a port of the small array of antenna elements when capturing the S-parameters for the small array of antenna elements;
mapping the far field patterns captured for the antenna elements of the small array of antenna elements to antenna elements of the target array of antenna elements, wherein mapping the far field patterns includes:
mapping far field patterns of corner antenna elements of the small array of antenna elements to corresponding corner antenna elements of the target array of antenna elements; and
mapping far field patterns of each antenna element along each outside edge of the small array of antenna elements to an antenna element along a corresponding outside edge of the target array of antenna elements, except for one antenna element of each outside edge of the small array of antenna elements, which is mapped into all remaining antenna elements of the corresponding outside edge of the target array of antenna elements; and

mapping the S-parameters captured for the small array of antenna elements to the target array of antenna elements, where each antenna element in the target array of antenna elements is regarded as a port of the target array of antenna elements when mapping the S-parameters to the target array of antenna elements.