Systems and methods that utilize an active stub/parasitic whip antenna to facilitate mobile communication
First Claim
1. An apparatus comprising:
- a transceiving antenna component that is coupled to a first wireless communication device, the transceiving antenna component configured to receive a modulated signal from the first wireless communication device; and
an extendable antenna component that is coupled to the transceiving antenna component via a nongalvanic interface, the transceiving antenna component configured to convey the modulated signal to the extendable antenna component via electromagnetic induction, the extendable antenna component configured to widen a bandwidth of the transceiving antenna component for transmitting the signal to at least one other wireless communication device.
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Accused Products
Abstract
The present invention provides systems and methods that facilitate transmission and/or reception of radio frequency (RF) signals within a mobile communications device. The systems and methods include a first antenna component such as an active stub that comprises one or more active elements and a second antenna component such as a parasitic whip that is electromagnetically coupled to the first antenna component. The systems and methods provide a relatively compact antenna structure for mobile devices with limited physical volume, or footprint. The antenna structure does not require a mechanical interface (e.g., a galvanic connection) between the active stub and parasitic whip to provide a conductive connection to the whip when it is in an extended position. The novel systems and methods yield reduced antenna wear, higher antenna gain and better radiation efficiency than conventional systems and do not require a matching circuit to achieve multi-band resonances.
9 Citations
31 Claims
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1. An apparatus comprising:
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a transceiving antenna component that is coupled to a first wireless communication device, the transceiving antenna component configured to receive a modulated signal from the first wireless communication device; and an extendable antenna component that is coupled to the transceiving antenna component via a nongalvanic interface, the transceiving antenna component configured to convey the modulated signal to the extendable antenna component via electromagnetic induction, the extendable antenna component configured to widen a bandwidth of the transceiving antenna component for transmitting the signal to at least one other wireless communication device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus comprising:
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a transceiving antenna component configured to receive a modulated signal; and an extendable antenna component that is coupled to the transceiving antenna component via a nongalvanic interface, the transceiving antenna component configured to convey the modulated signal to the extendable antenna component via electromagnetic induction, the extendable antenna component configured to transmit the signal, and wherein the extendable antenna component is tuned to operate at a frequency based on a length of the extendable antenna component and an amount of overlap between the transceiving antenna component and the extendable antenna component.
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12. An apparatus comprising:
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an active stub tuned to resonate at multiple frequency bands; and a parasitic whip coupled to the active stub, the parasitic whip configured to widen a bandwidth of a received signal resonating at least partially within one of the tuned frequency bands of the active stub and for inductively transferring the signal to the active stub. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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extending a parasitic whip to overlap an active stub; providing the active stub with a radio frequency signal from a wireless communications device; inducing a current in the parasitic whip; and transmitting the signal utilizing both the active stub and the parasitic whip such that the parasitic whip widens a bandwidth of the active stub. - View Dependent Claims (21, 22)
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23. An apparatus comprising:
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a fixed antenna component; and an extendable antenna component inductively coupled to the fixed antenna component in an extended position via an overlap extending at least about 4 mm between the fixed and extendable antenna components, and decoupled from the fixed antenna component in a retracted position; wherein the extendable antenna component operates in the extended position to widen a bandwidth of the fixed antenna element. - View Dependent Claims (24, 25, 26, 27, 28)
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29. An apparatus comprising:
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a fixed antenna component; and an extendable antenna component inductively coupled to the fixed antenna component in an extended position via an overlap extending at least about 4 mm between the fixed and extendable antenna components, and decoupled from the fixed antenna component in a retracted position by a detuning circuit that is disposed on a printed wiring board that comprises a ground plane to the fixed antenna component.
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30. An apparatus comprising:
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a fixed antenna component; and an extendable antenna component inductively coupled to the fixed antenna component in an extended position via an overlap extending at least about 4 mm between the fixed and extendable antenna components, and decoupled from the fixed antenna component in a retracted position by a non-conductive portion of the extendable antenna component overlapping with the fixed antenna component while in the retracted position.
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31. An apparatus comprising:
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a fixed antenna component; and an extendable antenna component inductively coupled to the fixed antenna component in an extended position via an overlap extending at least about 4 mm between the fixed and extendable antenna components, and decoupled from the fixed antenna component in a retracted position; wherein the fixed antenna component is coupled to a printed wiring board that comprises a ground plane to the fixed antenna component, said extendable antenna component disposed so as to lie alongside the printed wiring board while in the retracted position.
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Specification