Multilevel antennae
DC CAFCFirst Claim
1. An apparatus including a wireless communications device having an internal antenna system located within the wireless communications device, wherein said internal antenna system includes a passive antenna set comprising;
- at least one antenna element, wherein said at least one antenna element comprises a structure including at least two levels of detail, a first level of detail for an overall structure defined by a plurality of generally identifiable geometric elements and a second level of detail defined by a subset of the plurality of geometric elements forming said overall structure;
wherein at least one of either a perimeter of contact or an area of overlap between said geometric elements is only a fraction of a total perimeter or a total area of the geometric elements, respectively, for a majority of said geometric elements such that it is possible to generally identify the majority of said plurality of geometric elements within said structure;
a feeding point to said antenna element;
a ground plane;
wherein said feeding point and a point on the ground plane define an input/output port for said passive antenna set and said passive antenna set provides a similar impedance level and radiation pattern at two or more frequency bands such that the passive antenna set is capable of both transmitting and receiving wireless signals on selected channels, the selected channels selectable from a plurality of channels throughout an entire frequency range within each of said two or more frequency bands.
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Abstract
Antennae in which the corresponding radiative element contains at least one multilevel structure formed by a set of similar geometric elements (polygons or polyhedrons) electromagnetically coupled and grouped such that in the structure of the antenna can be identified each of the basic component elements. The design as such that it provides two important advantages: the antenna may operate simultaneously in several frequencies, and/or its size can be substantially reduced. Thus, a multiband radioelectric behavior is achieved, that is, a similar behavior for different frequency bands.
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Citations
29 Claims
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1. An apparatus including a wireless communications device having an internal antenna system located within the wireless communications device, wherein said internal antenna system includes a passive antenna set comprising;
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at least one antenna element, wherein said at least one antenna element comprises a structure including at least two levels of detail, a first level of detail for an overall structure defined by a plurality of generally identifiable geometric elements and a second level of detail defined by a subset of the plurality of geometric elements forming said overall structure; wherein at least one of either a perimeter of contact or an area of overlap between said geometric elements is only a fraction of a total perimeter or a total area of the geometric elements, respectively, for a majority of said geometric elements such that it is possible to generally identify the majority of said plurality of geometric elements within said structure; a feeding point to said antenna element; a ground plane; wherein said feeding point and a point on the ground plane define an input/output port for said passive antenna set and said passive antenna set provides a similar impedance level and radiation pattern at two or more frequency bands such that the passive antenna set is capable of both transmitting and receiving wireless signals on selected channels, the selected channels selectable from a plurality of channels throughout an entire frequency range within each of said two or more frequency bands. - View Dependent Claims (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)
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2. An apparatus including a wireless communications device having an internal antenna system located within the wireless communications device, wherein said internal antenna system includes a passive antenna set comprising;
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at least one antenna element, wherein said at least one antenna element comprises a structure including a generally identifiable non-convex geometric element, wherein said non-convex geometric element comprises a plurality of convex geometric elements defining a first level of detail, wherein said non-convex geometric element shapes the electric currents on the at least one antenna element associated with a lowest frequency band, while at least a subset of said plurality of convex geometric elements shapes the electric currents on the at least one antenna element associated with at least one of the higher frequency bands; a feeding point to said antenna element; a ground plane; wherein said feeding point and a point on the ground plane define an input/output port for said passive antenna set and said passive antenna set provides a similar impedance level and radiation pattern at two or more frequency bands such that the passive antenna set is capable of both transmitting and receiving wireless signals on selected channels, the selected channels selectable from a plurality of channels throughout an entire frequency range within said two or more frequency bands. - View Dependent Claims (29)
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3. An apparatus including a wireless communications device having an internal antenna system located within the wireless communications device, wherein said internal antenna system includes a passive antenna set comprising;
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at least one conductive radiating antenna element; a feeding point to said at least one conductive antenna element; a ground plane; wherein said feeding point and a point on the ground plane define an input/output port for said passive antenna set; wherein the at least one conductive radiating antenna element includes at least one structure comprising a plurality of electromagnetically coupled geometric elements grouped into at least a first portion and a second portion in which the second portion is located within the first portion, said first and second portions defining empty spaces in an overall structure of the at least one conductive radiating antenna element to provide at least two current paths through said antenna element, such that the passive antenna set is capable of both transmitting and receiving wireless signals on selected channels, the selected channels selectable from a plurality of channels throughout an entire frequency range within each of two or more frequency bands; and wherein at least one of a perimeter of contact or an area of overlap between each of said geometric elements is only a fraction of a total perimeter or a total area of each of said geometric elements, respectively, for a majority of said plurality of geographic elements such that said internal antenna system is physically smaller in area than a multiband antenna obtained by grouping a plurality of substantially isolated single band antenna elements.
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Specification