Antenna
AssigneeNokia Mobile Phones Ltd.
InventorBrian Davidson
Life of this patent
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Abstract
An antenna for portable radio apparatus, comprising a conductive filament arranged in a tapering corrugated configuration having an envelope extending from a narrow portion to a wider portion. The conductive filament is arcuately disposed about a longitudinal direction of the tapering configuration, thereby forming a generally tubular antenna. The conductive filament may be fabricated using metal printing technology.
Claims17
A generally tubular antenna for a portable radio apparatus, comprising a conductive filament arranged in a tapering corrugated configuration having an envelope extending from a narrow portion to a wider portion, wherein the conductive filament is arcuately disposed about said tubular antenna in a longitudinal direction of the tapering configuration, the tubular antenna having a generally constant cross-section at least in the portion of the antenna comprising the envelope.
An antenna for portable radio apparatus, comprising a conductive filament arranged in a tapering corrugated configuration having an envelope extending from a narrow portion to a wider portion, wherein the conductive filament is arcuately disposed about a longitudinal direction of the tapering configuration, thereby forming a generally tubular antenna, the conductive filament being supported by an insulating member, and wherein a material having a relatively high dielectric constant is disposed within the insulating member.
A generally tubular antenna for a portable radio apparatus, comprising a conductive filament arranged in a tapering corrugated configuration having an envelope extending from a narrow portion to a wider portion, wherein the conductive filament is arcuately disposed about said tubular antenna in a longitudinal direction of the tapering configuration, the tubular antenna having a generally cylindrical cross-section in the portion of the antenna comprising the envelope.
Dependencies are inferred from the claim text.