Beam steering in sub-arrayed antennae
US6661375B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2002 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Feb 15, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/4463
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method is presented for operating a phased array antenna comprising a number of sub-arrays. The method comprises the steps of introducing phase offsets into signals received from/transmitted to each element in the antenna, to provide directional transmit or receive sensitivity in a first direction; summing signals received from each element in each sub-array to provide respective sub-array signals; introducing respective phase offsets into the respective sub-array signals to adjust the direction of maximum sensitivity within a sensitivity envelope defined by the phase offsets applied to each element of the antenna as a whole. The method further comprises the step of adjusting the phase offset of each element of each respective sub-array by a respective amount, thereby to alter the directional sensitivity of each respective sub-array, respective sub-arrays having the phase offset of their elements adjusted by differing amounts thereby providing the sub-arrays with a variety of directional sensitivities diverging from the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.