Antenna apparatus for transmitting data of a fill-level measuring device
US9812781B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 2013 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Nov 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q7/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Antenna apparatus for transmitting data of a fill-level measuring device, comprising at least two coil arrangements (i=1, 2 . . . n). The coil arrangements i=1, 2 . . . n have a coil length (li) and a coil diameter (di), wherein the coil diameter (di) is less than the associated coil length (li). The coil arrangements (i=1, 2 . . . n) each intersect a straight line (e) in such a way that the straight line (e) and the longitudinal axis of the coil arrangements (i=1, 2 . . . n) form at the intersection an acute or 90° angle of intersection (g) of at least 85°, wherein the intersection of each coil arrangement (i=1, 2 . . . n) is arranged at a position betweenwherein the at least two coil arrangements (i=1, 2 . . . n) are arranged along this line (e) in a sequence, in the case of which the coil lengths li of the coil arrangements (i=1, 2 . . . n) monotonically decrease l1>l2> . . . ln. The at least two coil arrangements (i=1, 2 . . . n), in each case, have a separation (si) along the line (e) between the coil arrangement (i) and (i+1), which is, at most, a fourth as large as the coil length (li).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.