Multiple-beam electronic scanning antenna
US6198433A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1999 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Apr 23, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/46
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multiple-beam electronic scanning antenna including an array of phase-shifters (2, D.sub.ij). The N simultaneous beams are obtained in N directions by a law of excitation (f.sub.ij) applied to each computed phase-shifter (D.sub.ij) by summing the phase laws .psi..sub.1, .psi..sub.2, . . . .psi..sub.k, . . . .psi..sub.N associated respectively with each 1, 2, . . . k, . . . N order direction and by applying the resultant phase-shift (.psi.t.sub.ij) to the phase-shifter, without applying the resultant amplitude modulation (.rho..sub.ij). The multiple-beam electronic scanning antenna especially is applicable to uniquely phase-controlled antennas in satellite or terrestrial communications requiring simultaneous communications with several variable sites.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.