Copyright © Philip M. Parker, INSEAD. Terms of Use.

| Year | Description |
| 1994 | Invention patented by James B. Tsui on June 29th, 1994. Abstract: This system compares the phases from Fast Frequency Transform (FFT) outputs to obtain angle of arrival (AOA) information. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.