| http://www.w3.org/ns/prov#value | - However, if the shelf or nesting station upon which tags are placed is composed of a material such as wood, plastic, and the like instead of metal, then a balance between separation of the antenna from the shelf and the performance of the antenna is not an issue. [0091] If the height or distance of the antenna from the tag increases, the communication or readability degrades.
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