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US 6,856,292 B2Granted
Physically small antenna
AssigneeNEC Corporation
InventorsAkio Kuramoto, Kousuke Tanabe, Takao Koizumi
Life of this patent
Estimating the term…
Abstract
A physically small antenna having a wide bandwidth that facilitates the inspection of the attachment to the printed circuit board. The antenna is provided with a dielectric plate having a rear surface, a conductive plate disposed on the rear surface, a vertical element extending in a direction perpendicular to the rear surface. The vertical element includes a dielectric bar, an end of which is attached to the rear surface, and a conductive shell covering a side and an opposite end of the dielectric bar to be attached to the conductive plate.
Claims19
An antenna comprising:
- a dielectric plate having a rear surface;
- a conductive plate disposed on said rear surface;
- a vertical element extending in a direction perpendicular to said rear surface, wherein said vertical element includes:
- a dielectric bar, an end of which is attached to said rear surface, and
- a conductive shell covering a side and an opposite end of said dielectric bar, said conductive shell being attached to said conductive plate;
- at least one dielectric leg disposed on said rear surface, said dielectric leg extending in said direction perpendicular to said rear surface, said dielectric leg having a sidewall;
- and
- a conductor attached to an end of said dielectric leg,
- wherein at least a portion of said sidewall of said dielectric leg is not covered by said conductor or by any other conductor material.
6 more elements
An antenna comprising:
- a dielectric plate having a rear surface;
- a conductive plate disposed on said rear surface;
- a vertical element extending in a direction perpendicular to said rear surface, wherein said vertical element includes:
- a dielectric bar, an end of which is attached to said rear surface, and
- a conductive shell covering a side and an opposite end of said dielectric bar, said conductive shell being attached to said conductive plate,
- wherein an end of said dielectric leg is attached to said dielectric plate, and another end of said dielectric leg is provided with a boss protruding in said direction perpendicular to said rear surface.
3 more elements
A method for adjusting characteristics of an antenna comprising:
- providing an antenna including:
- a dielectric plate having a rear surface,
- a conductive plate disposed on said rear surface,
- a vertical element extending in a direction perpendicular to said rear surface, said vertical element comprising:
- a dielectric bar, an end of which is attached to said rear surface, and
- a conductive shell covering a side and another end of said dielectric bar, and
- a first conductor provided on said dielectric plate;
- and
- at least one dielectric leg disposed on said rear surface, said dielectric leg extending in said direction perpendicular to said rear surface, said dielectric leg having a sidewall;
- and
- a second conductor attached to an end of said dielectric leg,
- wherein at least a portion of said sidewall of said dielectric leg is not covered by said second conductor or by any other conductor material, and
- removing at least a portion of said first conductor.
10 more elements
A method for adjusting characteristics of an antenna comprising:
- providing an antenna including:
- a dielectric plate having a rear surface,
- a conductive plate disposed on said rear surface,
- a vertical element extending in a direction perpendicular to said rear surface, said vertical element comprising:
- a dielectric bar, an end of which is attached to said rear surface, and
- a conductive shell covering a side and another end of said dielectric bar, and
- a conductor provided on said dielectric plate;
- and
- removing at least a portion of said conductor;
- and
- mounting said antenna onto a printed circuit board, wherein said removing is executed after said mounting.
8 more elements
A method for adjusting characteristics of an antenna comprising:
- providing an antenna including:
- a dielectric plate having a rear surface,
- a conductive plate disposed on said rear surface,
- a vertical element extending in a direction perpendicular to said rear surface, said vertical element comprising:
- a dielectric bar, an end of which is attached to said rear surface, and
- a conductive shell covering a side and another end of said dielectric bar, and
- a dielectric leg disposed on said rear surface to extend in said direction, and
- a conductor provided on said dielectric leg;
- and
- removing at least a portion of said conductor;
- and
- mounting said antenna onto a printed circuit board, wherein said removing is executed after said mounting.
9 more elements
A circuitry comprising:
- a printed circuit board including:
- a substrate, and
- a transmission line including:
- a stripline formed on said substrate, and
- a grounded conductive plate formed on said substrate;
- and
- an antenna including:
- a dielectric plate having a rear surface,
- a conductive plate disposed on said rear surface,
- a vertical element extending in a direction perpendicular to said rear surface, said vertical element comprising:
- a dielectric bar, an end of which is attached to said rear surface, and
- a conductive shell covering a side and another end of said dielectric bar to be attached to said conductive plate,
- a dielectric leg, an end of which is attached to said rear surface to extend in said direction, and
- a conductor disposed on another end of said dielectric leg,
- wherein said conductive shell is electrically connected to said stripline, and said conductor is electrically connected to said grounded conductive plate.
12 more elements
Dependencies are inferred from the claim text.