Point-source model for simulating near-field effects from structures of an antenna

A non-transitory computer-readable storage media comprising computer-executable instructions for generating a point-source model for an antenna array that, when executed, cause a processor of a computing device to:

• generate a source model, the source model modeling at least two active elements of the antenna array and an antenna structure of the antenna array, the antenna structure comprising at least two passive elements and at least one of a surface of the antenna array, a circuit board of the antenna array, a ground plane of the antenna array, a radome of the antenna array, or an enclosure of the antenna array;
• simulate electromagnetic radiation fields radiated into space by the active elements, the simulating based on the antenna structure modeled at a position within the electromagnetic radiation fields;
• extract, based on interactions of the electromagnetic radiation fields with the antenna structure, at least seven near-field values for each of the active elements and for each of the passive elements;
• generate far-field radiation patterns for each of the active elements and the passive elements, respectively, the generating based on a near-field-to-far-field transformation on the near-field value for that active or passive element;
• and
• output the far-field radiation patterns of the active elements and the passive elements, the far-field radiation patterns effective to simulate, using an asymptotic numerical method, electromagnetic interactions between the antenna array and at least one interaction structure, the asymptotic numerical method simulating the far-field radiation patterns as rays or ray fields.

A system for generating a point-source model for an antenna array comprising:

• means for generating a source model, the source model modeling at least two active elements of the antenna array and an antenna structure of the antenna array, the antenna structure comprising at least two passive elements and at least one of a surface of the antenna array, a circuit board of the antenna array, a ground plane of the antenna array, a radome of the antenna array, or an enclosure of the antenna array;
• means for simulating electromagnetic radiation fields radiated into space by the active elements, the simulating based on the antenna structure modeled at a position within the electromagnetic radiation fields;
• means for extracting, based on interactions of the electromagnetic radiation fields with the antenna structure, at least seven near-field values for each of the active elements and for each of the passive elements;
• means for generating far-field radiation patterns for each of the active elements and the passive elements, respectively, the generating based on a near-field-to-far-field transformation on the near-field value for the respective active elements and the respective elements;
• and
• means for outputting the far-field radiation patterns of the active elements and the passive elements, the far-field radiation patterns effective to simulate, using an asymptotic numerical method, electromagnetic interactions between the antenna array and at least one interaction structure, the asymptotic numerical method simulating the far-field radiation patterns as rays or ray fields.