Multiband Antenna System And Methods
3 Assignments
0 Petitions
Accused Products
Abstract
An antenna system internal to the device especially intended for small-sized mobile stations, the system having separate operating bands. The system is implemented as decentralized in a way that the device (300) has a plurality of separate antennas (310-360). Each antenna is based on (a) radiating element(s) on the surface of a dielectric substrate. The substrate can be, for example, a piece of ceramics or a part of the outer casing of the device. The antennas are located at suitable places in the device. The operating band of an individual antenna covers the frequency range used by one radio system, the frequency ranges close to each other and is used by two different radio systems or only the transmitting or receiving band of the frequency range used by a radio system. If the device has a shared transmitter and a shared receiver for the radio systems using frequency ranges close to each other, there can anyway be a separate antenna for each system or the antenna can also be shared. The antennas can be made very small, because a relatively small bandwidth is sufficient for an individual antenna, when there is a plurality of antennas. A good matching of the antenna is achieved on the whole width of each radio system, because the matching of a separate antenna having a relatively narrow band is easier to arrange than that of a combined multi-band antenna. No switches are needed in the structure for choosing a sub-band, which contributes to good efficiency for its part.
157 Citations
51 Claims
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1-9. -9. (canceled)
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10. An internal antenna system of a radio device, comprising:
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a ground plane; and at least two antenna components, each of said antenna components comprising at least one radiating element; wherein said ground plane comprises a dimension, said ground plane dimension being equal to at least a combined length of said radiating elements; and wherein said ground plane and said at least two radiating elements form at least two substantially separate operating bands. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An internal antenna system of a radio device, comprising:
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a circuit board comprising a conductive surface and further comprising a ground plane; a frame, said frame surrounding at least a portion of said circuit board; a casing disposed at least partly about said circuit board and said frame; and a plurality of antennas, each of said antennas comprising at least two radiating elements; wherein said ground plane and said radiating elements form at least two separate operating bands. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of operating an internal antenna system, said system comprising at least two antennas, said method comprising:
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operating said antenna system in a first state, said first state comprising utilizing a first one of said at least two antennas, said first antenna comprising at least two operating bands;
switching said state of said antenna system; andoperating said antenna system in a second state, said second state comprising utilizing a second one of said at least two antennas, said second antenna component comprising at least two operating bands; wherein said at least two operating bands of said second antenna are different than said at least two operating bands of said first antenna. - View Dependent Claims (34, 35, 36, 37, 38)
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39. An internal antenna system of a radio device, comprising a ground plane and at least two radiating elements to form at least two separate operating bands, which cover the frequency ranges used by at least two different systems characterized in that each radiating element is a conductor on a surface of a dielectric substrate;
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the radiating elements form together with the substrates and said ground plane at least two separate antennas, which have different operating bands, and a distance along said ground plane between two radiators belonging to different antennas is at least the combined length of these radiators. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47)
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48. A multiband antenna system, comprising:
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at least one dielectric substrate; a ground plane; and a plurality of radiating elements disposed at least partly on said at least one substrate, said plurality of radiating elements being disposed substantially distant from one another so as to produce substantially dedicated ground planes within said ground plane for respective ones of said radiating elements. - View Dependent Claims (49)
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50. A multiband antenna system, comprising:
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at least one dielectric substrate; and a plurality of high permittivity, low-bandwidth radiating elements disposed at least partly on said at least one substrate, the number of said plurality being sufficient so as to permit a size of each of said radiating elements to be smaller than that necessary if a smaller number were utilized.
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51. A matched multiband antenna system having a plurality of radio frequency bands associated therewith, the system comprising:
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at least one dielectric substrate; and a plurality of substantially discrete low frequency bandwidth radiating elements disposed at least partly on said at least one substrate; wherein use of said plurality of substantially discrete low bandwidth radiating elements allows for said matching.
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Specification