MOVABLE ANTENNA AND INSPECTION APPARATUS
First Claim
1. A movable antenna, comprising:
- a holder;
an antenna radiator element attached to the holder;
a first feed element that is attached to the holder and electromagnetically coupled to the antenna radiator element;
a base plate in a facing arrangement with the holder;
a second feed element on the base plate and configured to face and overlap at least a portion of the first feed element; and
a mechanism that moves the holder in a longitudinal direction of the second feed element while maintaining an interval between the first and second feed element permitting energy to be transferred between the first and second feed elements.
2 Assignments
0 Petitions
Accused Products
Abstract
According to one embodiment, a movable antenna includes a holder, an antenna radiator element attached to the holder, a first feed element that is attached to the holder and electromagnetically coupled to the antenna radiator element, a base plate in a facing arrangement with the holder, a second feed element on the base plate and configured to face and overlap at least a portion of the first feed element, and a mechanism that moves the holder in a longitudinal direction of the second feed element while maintaining an interval between the first and second feed element permitting energy to be transferred between the first and second feed elements.
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Citations
20 Claims
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1. A movable antenna, comprising:
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a holder; an antenna radiator element attached to the holder; a first feed element that is attached to the holder and electromagnetically coupled to the antenna radiator element; a base plate in a facing arrangement with the holder; a second feed element on the base plate and configured to face and overlap at least a portion of the first feed element; and a mechanism that moves the holder in a longitudinal direction of the second feed element while maintaining an interval between the first and second feed element permitting energy to be transferred between the first and second feed elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electronic tag reading apparatus, comprising:
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a casing including a chamber into which an electronic tag can be placed for reading; a moveable antenna placed in proximity to the chamber, the moveable antenna comprising; a holder; an antenna radiator element attached to the holder; a first feed element that is attached to the holder and electromagnetically coupled to the antenna radiator element; a base plate in a facing arrangement with the holder; a second feed element on the base plate and configured to face and overlap at least a portion of the first feed element; and a mechanism that moves the holder in a longitudinal direction of the second feed element while maintaining an interval between the first and second feed element permitting energy to be transferred between the first and second feed elements. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A RFID tag reading apparatus, comprising:
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a casing including a chamber into which an item to which an RFID tag has been attached can be placed for reading; a reader-writer for generating signals for reading the RFID tag; a moveable antenna placed in proximity to the chamber, the moveable antenna comprising; a holder; an antenna radiator element attached to the holder; a first feed element that is attached to the holder and electromagnetically coupled to the antenna radiator element; a base plate in a facing arrangement with the holder; a second feed element on the base plate and configured to face and overlap at least a portion of the first feed element; a mechanism that moves the holder in a longitudinal direction of the second feed element while maintaining an interval between the first and second feed element permitting energy to be transferred between the first and second feed elements; and a coaxial connector disposed on the base plate and electrically connected to the second feed element, wherein the reader-writer is connected to the coaxial connector via coaxial cable; and a controller configured to reciprocate the moveable antenna along the longitudinal direction of the second feed element during a reading process. - View Dependent Claims (20)
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Specification