Apparatus for and method of using a diversity antenna
First Claim
1. A Radio Frequency Identification (RFID) system comprising:
- at least one non-planar RFID tag associated with an item;
a first reader antenna;
a second reader antenna; and
a container for storing a plurality of items, wherein said first reader antenna is in the form of a loop substantially surrounding a volume of the container; and
wherein said second reader antenna is in the form of a loop in a plane parallel with one side of the container.
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Abstract
In accordance with a preferred embodiment of the invention, an antenna structure is provided having one or more antennae arranged so as to read all possible orientations of a randomly placed tag. Also provided in accordance with a preferred embodiment of the invention, is a method of configuring one or more antennae composed of the steps of: identifying the “dead zones” of each discrete antennae used, and orienting each antennae such that there are no “dead zones” common to all antennae. The unique antenna structure (and corresponding method) has particular application in tag reader antenna systems for use in RFID (radio frequency identification) applications (13.56 MHz) and the like. In accordance with an exemplary embodiment, multiple RF (radio frequency) antennae are utilized as part of an intelligent station to track items tagged with radio frequency identification (RFID) tags.
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Citations
9 Claims
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1. A Radio Frequency Identification (RFID) system comprising:
- at least one non-planar RFID tag associated with an item;
a first reader antenna;
a second reader antenna; and
a container for storing a plurality of items, wherein said first reader antenna is in the form of a loop substantially surrounding a volume of the container; and
wherein said second reader antenna is in the form of a loop in a plane parallel with one side of the container. - View Dependent Claims (2, 3, 4, 5, 6)
- at least one non-planar RFID tag associated with an item;
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7. A Radio Frequency Identification (RFID) system comprising:
- at least one planar REID tag associated with an item;
a first reader antenna;
a second reader antenna; and
a container for storing a plurality of items, wherein said first reader antenna is in the form of a loop substantially surrounding a volume of the container; and
wherein said second reader antenna is in the form of a loop in a plane parallel with one side of the container. - View Dependent Claims (8, 9)
- at least one planar REID tag associated with an item;
Specification