Antenna with cover radiator and methods
First Claim
Patent Images
1. An antenna for use in a radio device, comprising:
- a feed element having feed and short circuit points associated therewith, at least the short circuit point being in electrical communication with a ground plane of the radio device; and
a device end cover, the end cover comprising a dielectric, two end surfaces, and having the feed element disposed on an interior surface thereof, and at least one conductive coating comprising a multiband radiator disposed on an outer surface thereof, the at least one conductive coating comprising at least one slot formed on each of the two end surfaces.
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Accused Products
Abstract
A monopole antenna applicable especially to small mobile stations. In one embodiment, the radiator of the antenna is trough-like in shape so that it covers the head surface, front and rear surfaces and both side surfaces of the dielectric cover of the radio device at an end of the device. On the side of the side surfaces slots are formed in the radiator, starting from its edge, for increasing the electric size. The radiator is fed electromagnetically by a separate element which is shaped so that the antenna has at least two operating bands. The ground plane of the antenna is in one embodiment disposed apart from the radiator, thus not extending inside the ‘trough’.
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Citations
21 Claims
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1. An antenna for use in a radio device, comprising:
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a feed element having feed and short circuit points associated therewith, at least the short circuit point being in electrical communication with a ground plane of the radio device; and a device end cover, the end cover comprising a dielectric, two end surfaces, and having the feed element disposed on an interior surface thereof, and at least one conductive coating comprising a multiband radiator disposed on an outer surface thereof, the at least one conductive coating comprising at least one slot formed on each of the two end surfaces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mobile wireless device, comprising
a radio transmitter and receiver; -
a first device housing element; a circuit board disposed substantially with the first device housing element, the circuit board comprising a ground plane; and a dielectric device end housing element comprising; a feed element having a short circuit point in communication with the ground plane, and a feed point coupled to the radio transmitter and receiver; and a radiator formed on at least part of an exterior of the end housing element, the radiator comprising a trough-like shape with two opposing side surfaces, each opposing side surface comprises at least one slot formed therein and each slot starts from an edge of its respective side surface; wherein the feed element, short circuit point, ground plane, and radiator cooperate to provide the wireless device with multiband wireless capability. - View Dependent Claims (10, 11)
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12. A method of operating a wireless antenna, the antenna comprising a feed element with a feed point, a short circuit point, a dielectric element, and a radiating element, the method comprising:
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feeding a signal to the feed element via the feed point; short circuiting the feed element to a ground plane via the short circuit point; and electromagnetically coupling at least portions of the feed element to the radiating element via the dielectric element, the coupling causing the radiating element to radiate at least portions of the signal in at least one of an upper band and a lower band in which the antenna is capable of operating; wherein the antenna further comprises an at least partly metallic antenna cover disposed over at least a portion of the radiating element, the radiating element and the antenna cover comprising two opposing short sides and two opposing lone sides, each opposing short side having at least one slot formed therein directed from an edge thereof; and wherein the slots are used to (i) increase the electric size of the radiating element, and to (ii) decrease the physical size of the radiating element at one or more frequencies within the lower band. - View Dependent Claims (13)
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14. An antenna for use in a radio device, the radio device having a head surface and first and second opposing side surfaces, the antenna comprising:
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a radiator having an antenna cover associated therewith, a feed element comprising an electromagnetic coupling to the radiator; and a ground plane in electrical communication with the radiator; wherein; the antenna has at least a lower operating band and a higher operating band; the radiator is disposed substantially at an end of the radio device, and comprises a conductive coating of a dielectric cover of the radio device, the dielectric cover comprising a trough-like shape so that a bottom of the dielectric cover corresponds to the head surface of the radio device; the antenna cover is a part of the dielectric cover; and the radiator comprises a slot proximate each of the first and second opposing side surfaces and which start from an edge of the radiator in order to decrease a physical size of the antenna at the frequencies of the lower operating band of the antenna. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification