Planar antenna for wireless communication device and portable computer using the same
First Claim
1. A compact-size planar antenna, comprising:
- a liquid crystal display (LCD)-protective bracket;
a top plate spaced apart from the bracket by a predetermined distance and comprising a first plate and a second plate integrally formed with the first plate, the first plate having a larger surface area than the second plate, the first plate and the second plate being parallel to the bracket; and
a short circuit plate connected to the top plate and the bracket at both ends.
1 Assignment
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Accused Products
Abstract
A compact-size planar antenna uses, as a ground plane, a LCD-protective bracket of a portable wireless device with an LCD. The antenna includes a top plate spaced apart from the bracket by a predetermined distance, and a short circuit plate connected to the top plate and the bracket with both ends. A power feed line is connected to the top plate and the bracket with both ends, and a dielectric body having a high dielectric constant is arranged between the bracket and the top plate. The compact-size planar antenna is spaced apart from conductor parts of the portable wireless device by a predetermined distance, and formed at a left lower corner of the portable wireless device when viewed from back of the portable wireless device.
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Citations
16 Claims
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1. A compact-size planar antenna, comprising:
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a liquid crystal display (LCD)-protective bracket; a top plate spaced apart from the bracket by a predetermined distance and comprising a first plate and a second plate integrally formed with the first plate, the first plate having a larger surface area than the second plate, the first plate and the second plate being parallel to the bracket; and a short circuit plate connected to the top plate and the bracket at both ends. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A portable computer with wireless communication capability and having a liquid crystal display (LCD) with a bracket protecting the LCD, the portable computer comprising:
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a compact-size planar antenna using the bracket as a ground plane and comprising;
a top plate spaced from the bracket by a predetermined distance and comprising a first plate and a second plate integrally formed with the first plate, the first plate having a larger surface area than the second plate, the first plate and the second plate being parallel to the bracket; anda short circuit plate attached to the top plate and the bracket at both ends. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A portable wireless device having a liquid crystal display (LCD), the device comprising:
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a planar antenna using an LCD-protective bracket of the LCD as an antenna ground plane; a top plate spaced apart from the LCD-protective bracket by a predetermined distance, the top plate having a first portion and a second portion narrower than the first portion, the top plate spaced apart from the LCD-protective bracket by a predetermined distance, the first portion and the second portion being parallel to the bracket; a short circuit plate connected to the top plate and the LCD-protective bracket with both ends, one end of the short circuit plate being connected to the second portion of the top plate and another end of the short circuit plate being connected to the LCD-protective bracket; and a power feed line connected to the top plate and the LCD-protective bracket with both ends, one end of the power feed line being connected to the first portion of the top plate and another end of the power feed line being connected to the LCD-protective bracket. - View Dependent Claims (14, 15)
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16. A portable wireless device having a liquid crystal display (LCD) and a bracket protecting the LCD, the device comprising a planar antenna using the LCD-protective bracket having a larger surface area than a top plate of the antenna as a ground plane, the top plate comprising a first plate and a second plate integrally formed with the first plate, the first plate having a larger surface area than the second plate, the first plate and the second plate being parallel to the bracket.
Specification