RF beam center location method and apparatus for power transmission system
US4088999A · kind A · utility
Inventors
Key dates
| Filing date | May 21, 1976 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | May 21, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In wireless power transmission systems, in order to provide maximum possible efficiency in the transfer of power, the receiving element of the system must intercept the greatest possible portion of the transmitted energy beam. By having a planar array of receiver elements that are symmetrically located about a physical center, it becomes possible to determine the location on the array of the center of energy of the incident beam. This information is obtained as follows. Sum the output energy of all the receiver elements to the right and left of the vertical center of the array. Determine the difference and sum of these two amounts. Divide the difference by the sum. The result is an indication of the degrees that the center of the incident beam is off in azimuth. Sum the output energy of all the receiver elements above and below the horizontal center of the array. Determine the difference and sum of these two amounts. Divide the difference by the sum. The result is an indication of the degrees that the center of the incident beam is off in elevation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.