Loaded antenna
First Claim
Patent Images
1. A portable communications device comprising:
- a case operable to be held in a user'"'"'s hand;
a grounding element;
an antenna mounted entirely within the case and coupled to the grounding element, the antenna being configured to both radiate and receive electromagnetic waves corresponding to at least two non-overlapping frequency bands, wherein;
the antenna comprises a radiating element comprising a first part and a second part, the first part comprising at least one conducting surface, the at least one conducting surface being configured to radiate and receive electromagnetic waves corresponding to at least two non-overlapping frequency regions and comprising a surface whose entire perimeter is a space-filling perimeter, the space-filling perimeter including at least ten segments connected such that no pair of adjacent segments defines a longer straight segment, all of the segments of the space-filling perimeter being smaller than a tenth of an operating free-space wavelength of the antenna, and the second part comprising a loading structure extending along at least one path having a length between two tips, the length of the at least one path of the loading structure being smaller than an eighth of the longest operating free-space wavelength of the antenna;
at least one tip of the loading structure is connected along a width dimension of the loading structure to at least a portion of an edge of the at least one conducting surface; and
a maximum width of the loading structure is smaller than a quarter of a longest edge of the perimeter of the at least one conducting surface.
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Accused Products
Abstract
A novel loaded antenna is defined in the present invention. The radiating element of the loaded antenna consists of two different parts: a conducting surface and a loading structure. By means of this configuration, the antenna provides a small and multiband performance, and hence it features a similar behavior through different frequency bands.
232 Citations
62 Claims
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1. A portable communications device comprising:
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a case operable to be held in a user'"'"'s hand; a grounding element; an antenna mounted entirely within the case and coupled to the grounding element, the antenna being configured to both radiate and receive electromagnetic waves corresponding to at least two non-overlapping frequency bands, wherein; the antenna comprises a radiating element comprising a first part and a second part, the first part comprising at least one conducting surface, the at least one conducting surface being configured to radiate and receive electromagnetic waves corresponding to at least two non-overlapping frequency regions and comprising a surface whose entire perimeter is a space-filling perimeter, the space-filling perimeter including at least ten segments connected such that no pair of adjacent segments defines a longer straight segment, all of the segments of the space-filling perimeter being smaller than a tenth of an operating free-space wavelength of the antenna, and the second part comprising a loading structure extending along at least one path having a length between two tips, the length of the at least one path of the loading structure being smaller than an eighth of the longest operating free-space wavelength of the antenna; at least one tip of the loading structure is connected along a width dimension of the loading structure to at least a portion of an edge of the at least one conducting surface; and a maximum width of the loading structure is smaller than a quarter of a longest edge of the perimeter of the at least one conducting surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A portable communications device comprising:
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a case operable to be held in a user'"'"'s hand; a grounding element; an antenna mounted entirely within the case in operative relation to the grounding element, the antenna being configured to both radiate and receive electromagnetic waves corresponding to at least two non-overlapping frequency bands, wherein; the antenna comprises a radiating element comprising a first part and a second part, the first part comprising at least one conducting surface, the at least one conducting surface being configured to radiate and receive electromagnetic waves corresponding to at least two non-overlapping frequency regions and comprising a surface whose entire perimeter is a space-filling perimeter, the space-filling perimeter including at least ten segments connected such that no pair of adjacent segments defines a longer straight segment, all of the segments of the space-filling perimeter being smaller than a tenth of an operating free-space wavelength of the antenna, and the second part comprising a loading structure, a perimeter of the loading structure comprising a minimum of two segments and a maximum of nine segments, the segments being connected such that no pair of adjacent segments defines a longer straight segment; the loading structure is connected at least at one point to an edge of the at least one conducting surface; a maximum width of the loading structure is smaller than a quarter of a longest edge of the perimeter of the at least one conducting surface; and a portion of the edge of the at least one conducting surface to which at least one tip of the loading structure is connected is smaller than half of the edge of the at least one conducting surface to which the at least one tip of the loading structure is connected. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A portable communications device comprising:
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a case operable to be held in a user'"'"'s hand; a grounding element; an antenna mounted entirely within the case and coupled to the grounding element, the antenna being configured to both radiate and receive electromagnetic waves corresponding to at least two non-overlapping frequency bands, wherein; the antenna comprises a radiating element comprising a first part and a second part, the first part comprising at least one conducting surface, and the second part comprising a loading structure, the loading structure having a space-filling perimeter, the space-filling perimeter including at least ten segments connected such that no pair of adjacent segments defines a longer straight segment, the segments being smaller than a tenth of an operating free-space wavelength of the antenna; the loading structure is connected at least at one point to an edge of the at least one conducting surface; the loading structure extends along at least one path having a length between two tips; a maximum width of the loading structure is smaller than a quarter of a longest edge of the perimeter of the at least one conducting surface; and a length of the at least one path of the loading structure is greater than the width of the loading structure. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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Specification