ITEM IDENTIFICATION DEVICE ANTENNA
First Claim
Patent Images
1. An item identification device antenna comprising:
- a first portion coupled to a tag reader, wherein the first portion is for radiating an electromagnetic field at a predetermined frequency for reading a tag on an item; and
a second portion in the electromagnetic field for resonating at the predetermined frequency and for radiating another electromagnetic field for reading the tag.
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Accused Products
Abstract
An item identification device antenna which provides better field coverage for reading item identification tags. The item identification device antenna includes a first portion coupled to a tag reader for reading a tag on an item, wherein the first portion is for radiating an electromagnetic field at a predetermined frequency, and a second portion in the electromagnetic field for resonating at the predetermined frequency to radiate another electromagnetic field for reading the tag. The tags may include radio frequency identification (RFID) tags.
9 Citations
15 Claims
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1. An item identification device antenna comprising:
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a first portion coupled to a tag reader, wherein the first portion is for radiating an electromagnetic field at a predetermined frequency for reading a tag on an item; and a second portion in the electromagnetic field for resonating at the predetermined frequency and for radiating another electromagnetic field for reading the tag. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An item identification device antenna comprising:
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a first loop antenna coupled to a radio frequency identification (RFID) tag reader for radiating an electromagnetic field at an RFID tag reading frequency; and a second loop antenna in the electromagnetic field tuned to the RFID tag reading frequency, wherein the second loop antenna resonates at the RFID tag reading frequency and radiates another electromagnetic field, and wherein the one and the other electromagnetic fields overlap for reading an RFID tag between the first loop antenna and the second loop antenna.
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11. A method of creating an item identification field comprising:
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radiating an electromagnetic field at a predetermined frequency for reading an item identification tag of an item by a first antenna portion coupled to a tag reader; and resonating at the predetermined frequency to radiate another electromagnetic field by a second antenna portion in the electromagnetic field. - View Dependent Claims (12, 13, 14, 15)
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Specification