Meander antenna device
First Claim
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1. An antenna for a portable radio communication device having longitudinally opposed upper and lower portions, comprising:
- a radiating first element tuned to a first frequency,the first element having a central longitudinal first axis, first and second ends being a first feed point and a first open end, respectively, and a meander configuration,the first element extending in a generally cylindrical fashion along said first axis in alternately positive and negative circumferential directions in relation to the first axis,a dielectric support carrying the first element,said support including mounting means for mounting to said upper portion of the radio communication device sch that the first element projects outwards from said upper portion in a longitudinal direction of the radio communication device.
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Abstract
An antenna means for a portable radio communication device, in particular a hand-portable mobile telephone, having at least one radiating element that has a meandering and cylindrical configuration. This structure is specifically advantageous in combination with an extendable and retractable whip antenna and, when having two or more meandering radiating elements, in multi-band radiating structures. The antenna device is suitable for manufacturing in large quantities, for example by a flexible printed circuit board technique.
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Citations
35 Claims
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1. An antenna for a portable radio communication device having longitudinally opposed upper and lower portions, comprising:
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a radiating first element tuned to a first frequency, the first element having a central longitudinal first axis, first and second ends being a first feed point and a first open end, respectively, and a meander configuration, the first element extending in a generally cylindrical fashion along said first axis in alternately positive and negative circumferential directions in relation to the first axis, a dielectric support carrying the first element, said support including mounting means for mounting to said upper portion of the radio communication device sch that the first element projects outwards from said upper portion in a longitudinal direction of the radio communication device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An antenna for a portable radio communication device having longitudinally opposed upper and lower portions, comprising:
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a radiating first element tuned to a first frequency, the first element having a central longitudinal first axis, first and second ends being a first feed point and a first open end, respectively, and a meander configuration, a radiating second element tuned to a second frequency different from the first frequency, the second element having a central longitudinal second axis, first and second ends being a second feed point and a second open end, respectively, and a meander configuration, the first and second elements extending in a generally cylindrical fashion along said first axis in alternately positive and negative circumferential directions in relation to the first and second axis, respectively, a dielectric support carrying the first and second elements, said support including mounting means for mounting to said upper portion of the radio communication device such that the first and second elements project outward from said upper portion in a longitudinal direction of the radio communication device, the antenna being operable within first and second frequency bands surrounding the first and second frequencies, respectively. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification