Abstract: An antenna structure includes a ground element, a feeding radiation element, a first radiation element, a second radiation element, a first coupling branch, an inductive element, and a dielectric substrate. The feeding radiation element has a feeding point. The first radiation element is coupled to the feeding radiation element. The second radiation element is coupled to the feeding radiation element. The second radiation element and the first radiation element substantially extend in opposite directions. The first coupling branch is coupled through the inductive element to a first grounding point on the ground element. The first coupling branch includes an elevated portion extending across the first radiation element. The ground element, the feeding radiation element, the first radiation element, the second radiation element, the inductive element, and the first coupling branch are disposed on the same surface of the dielectric substrate.

Abstract: A frequency modulation antenna and an antenna device are proposed. The antenna device has an accommodating space, and the frequency modulation antenna is in the accommodating space and includes a main antenna structure and a first extending antenna structure. The main antenna structure includes a main substrate and a main loop radiator. The main substrate has a plane. The main loop radiator is disposed on the plane and has a first end and a second end in which the first end is coupled to a feeding point. The first extending antenna structure is vertically disposed on the plane and electrically connected to the second end. Therefore, the size of the frequency modulation antenna can be reduced and the performance of the frequency modulation antenna can be improved.

Abstract: An antenna structure includes a ground element, a feeding radiation element, a first radiation element, a second radiation element, a first coupling branch, and a dielectric substrate. The feeding radiation element has a feeding point. The first radiation element is coupled to the feeding radiation element. The second radiation element is coupled to the feeding radiation element. The second radiation element and the first radiation element substantially extend in opposite directions. The first coupling branch is coupled to a first grounding point on the ground element. The first coupling branch extends across the first radiation element. The first coupling branch includes a first coil portion and a first connection portion.

Abstract: An antenna structure includes a ground element, a feeding radiation element, a first radiation element, a second radiation element, a first coupling branch, an inductive element, and a dielectric substrate. The feeding radiation element has a feeding point. The first radiation element is coupled to the feeding radiation element. The second radiation element is coupled to the feeding radiation element. The second radiation element and the first radiation element substantially extend in opposite directions. The first coupling branch is coupled through the inductive element to a first grounding point on the ground element. The first coupling branch includes an elevated portion extending across the first radiation element. The ground element, the feeding radiation element, the first radiation element, the second radiation element, the inductive element, and the first coupling branch are disposed on the same surface of the dielectric substrate.

Abstract: An antenna structure includes a ground element, a feeding radiation element, a first radiation element, a second radiation element, a first coupling branch, and a dielectric substrate. The feeding radiation element has a feeding point. The first radiation element is coupled to the feeding radiation element. The second radiation element is coupled to the feeding radiation element. The second radiation element and the first radiation element substantially extend in opposite directions. The first coupling branch is coupled to a first grounding point on the ground element. The first coupling branch extends across the first radiation element. The first coupling branch includes a first coil portion and a first connection portion.

Abstract: An antenna structure includes a substrate, a feeding radiation element, a first grounding radiation element, a second grounding radiation element, and a first circuit element. The substrate has a first surface and a second surface which are opposite to each other. The feeding radiation element includes a body portion, a bridging portion, and an extension portion. The body portion has a feeding point. The bridging portion is coupled between the body portion and the extension portion. The first grounding radiation element is coupled to a ground voltage. The first circuit element is coupled between the first grounding radiation element and the second grounding radiation element. The bridging portion of the feeding radiation element is disposed on the first surface of the substrate. The first circuit element is disposed on the second surface of the substrate.

Abstract: An antenna structure includes a substrate, a feeding radiation element, a first grounding radiation element, a second grounding radiation element, and a first circuit element. The substrate has a first surface and a second surface which are opposite to each other. The feeding radiation element includes a body portion, a bridging portion, and an extension portion. The body portion has a feeding point. The bridging portion is coupled between the body portion and the extension portion. The first grounding radiation element is coupled to a ground voltage. The first circuit element is coupled between the first grounding radiation element and the second grounding radiation element. The bridging portion of the feeding radiation element is disposed on the first surface of the substrate. The first circuit element is disposed on the second surface of the substrate.

Abstract: A metal pattern formed in the electromagnetic absorber structure is provided. By performing the laser treatment to form the active layer thereon, the metal pattern can be regionally formed on the electromagnetic absorber structure in the following electroless plating processes.

Abstract: A method for manufacturing an antenna includes the steps of: providing a ferrite sheet; forming a via hole through the ferrite sheet, wherein the via hole is connected between a first surface and a second surface of the ferrite sheet; forming a nonconductive ink layer on the first surface and the second surface and in the via hole of the ferrite sheet; applying a displacement process to the nonconductive ink layer so as to form a first metal layer on the nonconductive ink layer; and applying a thickening process to the first metal layer so as to form a second metal layer on the first metal layer, wherein the first metal layer and the second metal layer both extend from the first surface through the via hole to the second surface of the ferrite sheet.

Abstract: An antenna structure is provided. The antenna structure includes a metal sheet including an antenna branch and a grounding structure, wherein the antenna branch and the grounding structure are formed in one piece from the metal sheet, wherein the metal sheet has a top surface and a bottom surface, and the top surface and the bottom surface are opposite each other; a conductive glue disposed over the bottom surface of the metal sheet; and a supporting material disposed over a bottom surface of the conductive glue, wherein the supporting material is disposed corresponding to the antenna branch of the metal sheet. A method for manufacturing the antenna structure is also provided.

Abstract: An antenna structure includes a ferromagnetic patch, first metal conductive lines, second metal conductive lines, and metal connection elements. The ferromagnetic patch has a first surface and a second surface, and the second surface is opposite to the first surface. The first metal conductive lines are disposed on the first surface of the ferromagnetic patch. The second metal conductive lines are disposed on the second surface of the ferromagnetic patch. The metal connection elements penetrate the ferromagnetic patch. The metal connection elements further connect the first metal conductive lines to the second metal conductive lines, respectively.

Abstract: An antenna structure is provided. The antenna structure includes a metal sheet including an antenna branch and a grounding structure, wherein the antenna branch and the grounding structure are formed in one piece from the metal sheet, wherein the metal sheet has a top surface and a bottom surface, and the top surface and the bottom surface are opposite each other; a conductive glue disposed over the bottom surface of the metal sheet; and a supporting material disposed over a bottom surface of the conductive glue, wherein the supporting material is disposed corresponding to the antenna branch of the metal sheet. A method for manufacturing the antenna structure is also provided.

Abstract: A metal pattern formed in the electromagnetic absorber structure is provided. By performing the laser treatment to form the active layer thereon, the metal pattern can be regionally formed on the electromagnetic absorber structure in the following electroless plating processes.

Abstract: An antenna structure includes a ferromagnetic patch, first metal conductive lines, second metal conductive lines, and metal connection elements. The ferromagnetic patch has a first surface and a second surface, and the second surface is opposite to the first surface. The first metal conductive lines are disposed on the first surface of the ferromagnetic patch. The second metal conductive lines are disposed on the second surface of the ferromagnetic patch. The metal connection elements penetrate the ferromagnetic patch. The metal connection elements further connect the first metal conductive lines to the second metal conductive lines, respectively.

Abstract: A method for manufacturing an antenna includes the steps of: providing a ferrite sheet; forming a via hole through the ferrite sheet, wherein the via hole is connected between a first surface and a second surface of the ferrite sheet; forming a nonconductive ink layer on the first surface and the second surface and in the via hole of the ferrite sheet; applying a displacement process to the nonconductive ink layer so as to form a first metal layer on the nonconductive ink layer; and applying a thickening process to the first metal layer so as to form a second metal layer on the first metal layer, wherein the first metal layer and the second metal layer both extend from the first surface through the via hole to the second surface of the ferrite sheet.