Waveguide for transmitting RF energy through an RF barrier
US6388630B1 · kind B1 · utility
10Cited by
14References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2000 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Jul 21, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07796
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A spacer for items includes a waveguide 28.1 for radio frequency signals and a crate 16.1 or pallet. When items 16.1 to 16.9 in an array are spaced with such waveguides, signals from an interrogator 12 of an RF electronic identification system 10 are guided via the waveguide to transponders 14.1 to 14.9 of the system mounted on the items. Response signals from the transponders are similarly guided in the reverse direction, so that the transponders may be read. The spacer, arrangement and methods according to the invention alleviate the problems presented by an RF barrier in prior art systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.