Movable antenna and inspection apparatus
First Claim
Patent Images
1. A movable antenna, comprising:
- a holder that is movable between a first end position and a second end position;
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 between the first end position and the second end position in a longitudinal direction of the second feed element while maintaining an interval between the first and second feed elements wherein energy is transferred between the first and second feed elements while the holder is at the first end position, the second end position, and all positions between the first end position and the second end position.
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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 that is movable between a first end position and a second end position; 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 between the first end position and the second end position in a longitudinal direction of the second feed element while maintaining an interval between the first and second feed elements wherein energy is transferred between the first and second feed elements while the holder is at the first end position, the second end position, and all positions between the first end position and the second end position. - 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; and a moveable antenna placed in proximity to the chamber, the moveable antenna comprising; a holder that is movable between a first end position and a second end position; 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 between the first end position and the second end position in a longitudinal direction of the second feed element while maintaining an interval between the first and second feed element wherein energy is transferred between the first and second feed elements while the holder is at the first end position, the second end position, and all positions between the first end position and the second end position. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. An 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 a 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