Multiband antenna
First Claim
Patent Images
1. A handheld wireless device comprising:
- a printed circuit board comprising a ground plane;
communication circuitry on the printed circuit board;
antenna feeding means coupled to the communications circuitry;
a battery coupled to the communication circuitry;
an antenna connected to the antenna feeding means and comprising a multilevel conducting structure, substantial portions of the multilevel structure being formed of a plurality of polygons;
wherein the plurality of polygons comprise geometric elements identifiably defined by a free perimeter thereof and a projection of the longest exposed perimeter thereof to define the least number of generally identifiable polygons within a region;
wherein at least two polygons of the plurality of polygons are coupled by a conducting strip narrower in width than any one of the at least two polygons; and
wherein at least two polygons of the plurality of polygons are separated by a non-straight gap contributing to tuning a frequency behavior of the antenna.
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Abstract
A multiband antenna includes at least two polygons. The at least two polygons are spaced by means of a non-straight gap shaped as a space-filling curve, in such a way that the whole gap length is increased yet keeping its size and the same overall antenna size allowing for an effective tuning of frequency bands of the antenna.
133 Citations
50 Claims
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1. A handheld wireless device comprising:
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a printed circuit board comprising a ground plane; communication circuitry on the printed circuit board; antenna feeding means coupled to the communications circuitry; a battery coupled to the communication circuitry; an antenna connected to the antenna feeding means and comprising a multilevel conducting structure, substantial portions of the multilevel structure being formed of a plurality of polygons; wherein the plurality of polygons comprise geometric elements identifiably defined by a free perimeter thereof and a projection of the longest exposed perimeter thereof to define the least number of generally identifiable polygons within a region; wherein at least two polygons of the plurality of polygons are coupled by a conducting strip narrower in width than any one of the at least two polygons; and wherein at least two polygons of the plurality of polygons are separated by a non-straight gap contributing to tuning a frequency behavior of the antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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Specification