ADJUSTABLE ANTENNA APPARATUS AND METHODS
2 Assignments
0 Petitions
Accused Products
Abstract
An adjustable monopole antenna apparatus and methods. In one embodiment, the antenna apparatus is intended for mobile terminals. In an exemplary implementation, there is an adjusting point is provided, from which a conductor is branched to an adjusting circuit. The adjusting circuit comprises a switch and alternative reactive elements connected to ground, selectable by the switch. When a reactive element is changed, the electric length and resonance frequency of the radiator change, and the corresponding operating band shifts. If the antenna is configured as a dual-band antenna, the above-mentioned operating band is the lower band. One or more higher operating bands are based e.g. on radiating slots implemented by the same radiator conductor. The operating band of the exemplary embodiment of the antenna below the frequency 1 GHz can be shifted in a wider range than in the corresponding known antennas.
20 Citations
40 Claims
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1-6. -6. (canceled)
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7. An adjustable antenna, comprising:
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a ground plane; a monopole type radiator with a feed point and first and second slots; an adjusting circuit configured to enable adjustment of at least one operating frequency of the antenna; and an adjusting point in communication with the radiator and the adjusting circuit; wherein the adjusting point is disposed substantially between the first and second slots. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. An antenna component, comprising:
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a dielectric element having at least a first end and a second end; at least one monopole radiator element disposed on at least one surface of the dielectric element, the at least one radiator configured to implement a first operating band of the antenna; a feed point disposed towards the first end of the dielectric element; and an adjustment point disposed between the feed point and the second end of the dielectric element, the adjustment point being configured to enable shifting of at least one frequency band associated with the radiator element. - View Dependent Claims (17, 18)
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- 19. A method of operating an adjustable antenna, the antenna comprising a monopole radiator element having at least first and second portions, and an adjustment point disposed substantially at an intersection of the first and second portions, the method comprising altering a reactance in electrical communication with the adjustment point so as effect a shift of a frequency band of the monopole radiator element.
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22. A method of configuring an adjustable antenna for a particular mobile device application, the antenna including a monopole radiator having first and second portions formed on a dielectric element, and a feed point, the method comprising:
selecting, based at least in part on said application; a location of a frequency band adjustment point relative to the feed point and first and second portions; one or more reactances associated with an adjusting circuit electrically communicating with the adjustment point; and a configuration of a conductor coupling the adjusting circuit with the adjustment point. - View Dependent Claims (23, 24, 25)
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26. An adjusting circuit for use in an adjustable antenna, the circuit comprising:
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a multiple position switching apparatus; a first conductor for electrically coupling the switching apparatus to an antenna radiating element through at least one first electrical component; a plurality of second conductors for electrically coupling respective ones of the multiple positions of the switching apparatus to ground through respective at least one second electrical components; and an inductance in communication with said first conductor. - View Dependent Claims (27, 28)
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29. A wireless mobile device, comprising:
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a housing comprising an interior cavity; a radio frequency transceiver; an adjustable antenna in signal communication with the transceiver; a first substrate disposed within said housing interior cavity and comprising a monopole antenna radiator disposed on at least one surface thereof; and a second substrate disposed within said housing interior cavity and having an adjusting circuit associated therewith, the adjusting circuit being in electrical communication with the antenna radiator. - View Dependent Claims (30, 31, 32, 33, 34)
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35. An adjustable antenna comprising a ground plane, a monopole type radiator with a feed point at its first end and an adjusting circuit with at least two reactive elements and a multi-way switch, by which one reactive element at a time can be connected to be a part of the adjusting circuit between an adjusting point of the antenna and the ground plane so as to set an operating band of the antenna to a desired value or range;
characterized in that said adjusting point is located in the monopole type radiator at a distance l from a feed point measured along a middle line of a conductor of the radiator, l being a length of said middle line. - View Dependent Claims (36, 37, 38)
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39. An antenna component for use in an adjustable antenna, the component comprising a dielectric object and at least one monopole type radiator disposed on at least one surface thereof, the at least one radiator configured to implement a lower operating band of the antenna, a first end of said radiator comprising a feed point of the antenna;
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characterized in that the radiator comprises an adjusting point of the antenna, an intermediate conductor to be connected to an adjusting circuit of the antenna, the intermediate conductor branching from the adjusting point; and wherein a distance of the adjusting point from the feed point is in the range of 0.1 l to 0.9 l measured along a middle line of the radiator, l being the total length of said middle line. - View Dependent Claims (40)
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Specification