Internal multi-band antennas for mobile communications
First Claim
1. An antenna device, comprising:
- a substantially planar radiating element;
a substantially planar ground conductor disposed adjacent the radiating element;
a dielectric disposed between the radiating element and the ground conductor;
an electrical signal feed point at the radiating element;
a shorting strap connecting the radiating element with the ground conductor; and
an acute angled slot formed in the radiating element, the acute angled slot having at least three slot sections, each slot section arranged at an acute angle relative to at least one other slot section.
4 Assignments
0 Petitions
Accused Products
Abstract
An internal multi-band antenna (10) for a mobile communication devices having a planar radiating element (12) and a ground plane conductor (14) disposed substantially parallel thereto with a dielectric (16) such as air or a substrate therebetween. The radiating element (12) includes at a feed point, for example, a feeding strap (18), which may have an L-shape. One or more shorting straps (20,22) are selectively connected between the radiating element (12) and the ground conductor (14), positioned relative to the feed point for tuning the input impedance at the feed point, and for tuning the resonant frequency of the planar radiating element (12). The radiating element includes an angled slot (26) having at least three slot sections, for example, N, M, W shapes and the like, mutually coupled at a second resonant frequency to increase resonant frequency bandwidth. The feeding strap (18) and one or more shorting straps may be provided as inverted L straps (30) for a series LC impedance.
96 Citations
19 Claims
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1. An antenna device, comprising:
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a substantially planar radiating element;
a substantially planar ground conductor disposed adjacent the radiating element;
a dielectric disposed between the radiating element and the ground conductor;
an electrical signal feed point at the radiating element;
a shorting strap connecting the radiating element with the ground conductor; and
an acute angled slot formed in the radiating element, the acute angled slot having at least three slot sections, each slot section arranged at an acute angle relative to at least one other slot section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An antenna device, comprising:
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a planar radiating element;
a radiating element ground plane conductor disposed substantially parallel with the radiating element;
a dielectric between the radiating element and the ground conductor;
a feeding strap coupled to the radiating element;
a plurality of at least two shorting straps, the plurality of shorting straps located different distances from where the feeding strap is coupled to the radiating plane, the feeding strap and the plurality of at least two shorting straps located in any combination along at least two different side portions of the antenna. - View Dependent Claims (15, 16, 17)
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18. A method of resonating an antenna at least two frequencies, comprising:
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resonating the antenna at a resonant frequency by introducing an electrical signal at a feed point on a planar radiating element separated from a ground plane conductor by a dielectric;
tuning an electrical signal impedance at the feed point by positioning a shorting strap interconnecting the radiating element and the ground plane conductor relative to the feed point;
the radiating element having a slot with at least three sections, each section arranged at an acute angle relative to at least one other section, mutually coupling sections of the slot in the radiating element at a second resonant frequency. - View Dependent Claims (19)
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Specification