Radio communication device and radio communication terminal
First Claim
1. A radio communication device comprising:
- a radio frequency IC configured to process a radio signal;
a feeding circuit connected to the radio frequency IC and including a loop electrode including a coil pattern with a predetermined winding width; and
an antenna pattern magnetically coupled to the loop electrode;
whereinthe feeding circuit is arranged so that, in plan view as seen from a coil axis direction of the coil pattern, a first region of the loop electrode in which the coil pattern extends in a first direction overlaps the antenna pattern and a second region of the loop electrode in which the coil pattern extends in a second direction opposite to the first direction does not overlap the antenna pattern;
the first direction and a line length direction of the antenna pattern are the same or substantially the same; and
no radio frequency IC is directly connected or coupled to the antenna pattern.
1 Assignment
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Accused Products
Abstract
A radio communication device includes a radio frequency IC chip configured to process a radio signal, a feeding circuit board that is coupled to the radio frequency IC chip and includes a loop electrode including coil patterns having a predetermined winding width, and an antenna pattern that is magnetically coupled to the loop electrode. The feeding circuit board is arranged so that, in plan view, a first region of the loop electrode in which the coil patterns extend in a first direction overlaps the antenna pattern and a second region of the loop electrode in which the coil patterns extend in a second direction opposite to the first direction do not overlap the antenna pattern. The first direction and a line length direction of the antenna pattern are the same or substantially the same.
144 Citations
20 Claims
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1. A radio communication device comprising:
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a radio frequency IC configured to process a radio signal; a feeding circuit connected to the radio frequency IC and including a loop electrode including a coil pattern with a predetermined winding width; and an antenna pattern magnetically coupled to the loop electrode;
whereinthe feeding circuit is arranged so that, in plan view as seen from a coil axis direction of the coil pattern, a first region of the loop electrode in which the coil pattern extends in a first direction overlaps the antenna pattern and a second region of the loop electrode in which the coil pattern extends in a second direction opposite to the first direction does not overlap the antenna pattern; the first direction and a line length direction of the antenna pattern are the same or substantially the same; and no radio frequency IC is directly connected or coupled to the antenna pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A radio communication terminal comprising a radio communication device including:
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a radio frequency IC configured to process a radio signal; a feeding circuit connected to the radio frequency IC and including a loop electrode including a coil pattern with a predetermined winding width; and an antenna pattern magnetically coupled to the loop electrode;
whereinthe feeding circuit is arranged so that, in plan view from a coil axis direction of the coil pattern, a first region of the loop electrode in which the coil pattern extends in a first direction overlaps the antenna pattern and a second region of the loop electrode in which the coil pattern extends in a second direction opposite to the first direction does not overlap the antenna pattern; the first direction and a line length direction of the antenna pattern are the same or substantially the same; and no radio frequency IC is directly connected or coupled to the antenna pattern. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification