Self-phasing array with a time-shared processor
US3967279A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1973 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Oct 30, 1993 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/2652
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A phase alignment system for a self-phasing antenna array is described. A single time-shared processor sequentially phase aligns each array element with a suitable reference signal. This technique is applicable to a self-phasing array in which the random phase of the signal received at each array element is slowly varying (bandlimited). Individual antenna signals are summed and the phase of the signal from a selected one of those antennas is compared to the phase of the sum (reference) and a variable phase shift is introduced into that selected one antenna output to bring that output into closer conformity with the phase of the sum. This process is repeated sequentially for the entire group of antennas and optionally the sequential comparing and adjusting may be interrupted, maintaining the phase-shifts for the several antennas at their most recent value, and the antenna array employed for a transmitter to thereby provide a transmission radiation pattern substantially the same as the reception sensitivity pattern as it existed just prior to the interruption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.