High-power transmit beamforming with impedance-mismatched antenna arrays
US11621748B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2021 |
| Grant date | Apr 4, 2023 |
| Priority date | — |
| Expiry date | Nov 18, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0617
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for controlling an antenna array includes determining, based on a beamstate, an initial weight vector of excitations. The initial weight vector is transformed into an active-impedance vector. When the modulus of any element of the active-impedance vector exceeds a threshold, the initial weight vector is unsafe. In this case, a substitute weight vector is identified such that (i) the initial and substitute weight vectors have a similarity measure that exceeds a similarity threshold and (ii) the substitute weight vector is safe. The antenna array may then be driven according to the substitute weight vector to emit radiation having a radiation pattern that approximates that of the beamstate. The substitute weight vector may be found by searching a library of safe weight vectors or by adjusting the excitations of the initial weight vector until a safe alternative is found.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.