Abstract: An RFID antenna comprising an elongated structure existing along an axis that is long compared to the signal wavelength and including twin ribbon-like feed lines of electrically conductive material, the feed lines being in a common plane and being uniformly laterally spaced from one another, and a plurality of radiating perturbations associated with the feed lines at a plurality of locations spaced along the feed lines, at each location each feed line has its own individual perturbation or portion of a perturbation.

Abstract: A portable electronic device with function of receiving and radiating radio frequency (RF) signal and a multi-frequency antenna thereof are disclosed. The portable electronic device comprises a RF module and a multi-frequency antenna connecting to the RF module. The multi-frequency antenna comprises a helix element and a coaxial cable disposed within the helix element. The helix element comprises a first helix portion and a second helix portion adjacent to each other, and the coaxial cable comprises a grounding portion and a radiating portion. The first helix portion covers the grounding portion, and the radiating portion is disposed within the second helix portion separated with each other.

Abstract: A three-dimensional antenna includes a substrate, a radiator, a second radiator, a signal feeding element, and a grounding element. The radiator is installed on the substrate. The radiator includes a first child radiator and a second child radiator. The first child radiator has a first end and a second end. The second child radiator has a first end and a second end, wherein the second end of the second child radiator is coupled to the second end of the first child radiator. The second radiator is coupled to the radiator. The signal feeding element is coupled to the first end of the first child radiator. The grounding element is coupled between the substrate and the first end of the second child radiator. The first child radiator and the second child radiator form an inverted V-shape installed on the substrate.

Abstract: An antenna structure includes a radiation element, a grounding element, and a feeding point. The radiation element includes a first section and a second section coupled to the first section. The grounding element includes a third section and a fourth section coupled to the third section. The third section is substantially parallel to the first section. The feeding point is coupled between the second section of the radiation element and the fourth section of the grounding element.

Abstract: A portable electronic device with function of receiving and radiating radio frequency (RF) signal and a multi-frequency antenna thereof are disclosed. The portable electronic device comprises a RF module and a multi-frequency antenna connecting to the RF module. The multi-frequency antenna comprises a helix element and a coaxial cable disposed within the helix element. The helix element comprises a first helix portion and a second helix portion adjacent to each other, and the coaxial cable comprises a grounding portion and a radiating portion. The first helix portion covers the grounding portion, and the radiating portion is disposed within the second helix portion separated with each other.

Abstract: A portable electronic device with function of receiving and radiating radio frequency (RF) signal and a multi-frequency antenna thereof are disclosed. The portable electronic device comprises a RF module and a multi-frequency antenna connecting to the RF module. The multi-frequency antenna comprises a helix element and a coaxial cable disposed within the helix element. The helix element comprises a first helix portion and a second helix portion adjacent to each other, and the coaxial cable comprises a grounding portion and a radiating portion. The first helix portion covers the grounding portion, and the radiating portion is disposed within the second helix portion separated with each other.

Abstract: An RFID antenna comprising an elongated structure existing along an axis that is long compared to the signal wavelength and including twin ribbon-like feed lines of electrically conductive material, the feed lines being in a common plane and being uniformly laterally spaced from one another, and a plurality of radiating perturbations associated with the feed lines at a plurality of locations spaced along the feed lines, at each location each feed line has its own individual perturbation or portion of a perturbation.

Abstract: An antenna structure includes a radiation element, a grounding element, and a feeding point. The grounding element includes a first grounding sub-element and a second grounding sub-element. The second grounding sub-element is coupled to the first grounding sub-element and has a loop structure. One section of the loop structure overlaps a first end of the radiation element and is at a designated distance from the first end of the radiation element in a designated direction. The feeding point is coupled between a second end of the radiation element and the first grounding sub-element.

Abstract: An antenna structure includes a radiation element, a grounding element, a feeding point, and a connection element. The radiation element includes a first radiator and a second radiator. The second radiator includes a first end close to a first end of the first radiator. The grounding element is coupled to the first end of the second radiator. The feeding point is coupled to the first end of the first radiator and is close to the first end of the second radiator. The connection element is coupled between the feeding point and the grounding element. The radiation element, the grounding element, the feeding point, and the connection element are constructed by metal wire.

Abstract: A flat antenna is used for a cable inputting a signal. The flat antenna comprises a base board, a radiator element, a filter unit, and a ground element wherein the radiator element, the filter unit, and the ground element are disposed on the board. The filter unit is used for eliminating or keeping the specific range of the frequency.

Abstract: An antenna comprising a ground element, a first conductive element, a first transmission element, a second transmission element and a third transmission element. The first conductive element is connected to the ground element. The first transmission element is connected to the first conductive element extending in a first direction. The second transmission element is connected to the first conductive element. The third transmission element is connected to the first conductive element extending in a second direction opposite to the first direction, wherein the third transmission element nears the second transmission element, and maintains a distance from the second transmission element.

Abstract: A broadband antenna and an assembly combination thereof are disclosed. The broadband antenna according to the present invention comprises a first radiation element, a second radiation element, a substrate, and a reflector. The first radiation element having a first trapezoid portion and the second radiation element are disposed on the substrate that is fixed on the reflector. The first radiation element and the second radiation element are excited so as to reflect the energy by the radiator.

Abstract: Antenna, antenna combination, and portable electronic device having the antenna or the antenna combination are disclosed. The antenna comprises a radiator, a grounding portion, and an arc-shaped feeding portion connected with a coaxial cable for feeding electronically. A first end of the arc-shaped feeding portion is connected with the radiator, and a second end of the arc-shaped feeding portion is connected with the grounding portion.

Abstract: The present invention provides an antenna, which includes a substrate, at least one radiating element and at least one reflecting element. The at least one radiating element is placed on the substrate at an inclined angle, and the at least one reflecting element is also placed on the substrate. The signals reflected by the at least one reflecting element substantially form an omni-directional radiation pattern through aggregation of overlapping patterns.

Abstract: An antenna structure includes a radiation element, a grounding element, and a feeding point. The grounding element includes a first grounding sub-element and a second grounding sub-element. The second grounding sub-element is coupled to the first grounding sub-element and has a loop structure. One section of the loop structure overlaps a first end of the radiation element and is at a designated distance from the first end of the radiation element in a designated direction. The feeding point is coupled between a second end of the radiation element and the first grounding sub-element.

Abstract: An antenna structure includes a radiation element, a grounding element, and a feeding point. The radiation element includes a first section and a second section coupled to the first section. The grounding element includes a third section and a fourth section coupled to the third section. The third section is substantially parallel to the first section. The feeding point is coupled between the second section of the radiation element and the fourth section of the grounding element.

Abstract: An antenna structure includes a radiation element, a grounding element, a feeding point, and a connection element. The radiation element includes a first radiator and a second radiator. The second radiator includes a first end close to a first end of the first radiator. The grounding element is coupled to the first end of the second radiator. The feeding point is coupled to the first end of the first radiator and is close to the first end of the second radiator. The connection element is coupled between the feeding point and the grounding element. The radiation element, the grounding element, the feeding point, and the connection element are constructed by metal wire.

Abstract: An antenna includes a substrate, a ground element, a radiating element and a feed element. The ground element is disposed on the substrate and has an opening. The radiating element is disposed on the substrate and electrically connects to the ground element. The radiating element comprises a first radiating trace and a second radiating trace. The first radiating trace includes a first segment, a second segment, and a first bended portion connected the first segment and the second segment. The second radiating trace connects to the second segment of the first radiating trace. The feed element is disposed on the substrate and electrically connects to the radiating element. The feed element and the radiating element are at the same surface of the substrate, and a part of the feed element extends and enters the opening.

Abstract: A three-dimensional antenna includes a substrate, a radiator, a second radiator, a signal feeding element, and a grounding element. The radiator is installed on the substrate. The radiator includes a first child radiator and a second child radiator. The first child radiator has a first end and a second end. The second child radiator has a first end and a second end, wherein the second end of the second child radiator is coupled to the second end of the first child radiator. The second radiator is coupled to the radiator. The signal feeding element is coupled to the first end of the first child radiator. The grounding element is coupled between the substrate and the first end of the second child radiator. The first child radiator and the second child radiator form an inverted V-shape installed on the substrate.

Abstract: A wideband antenna includes a substrate, a radiator, a signal feeding element, and a grounding element. The radiator includes a first child radiator and a second child radiator. The first child radiator and the second child radiator both include a respective first end and a second end. The signal feeding element is connected between the substrate and the first end of the first child radiator. The grounding element is connected between the substrate and the first end of the second child radiator. The first child radiator and the second child radiator form an inverted V-shape installed on the substrate.