Abstract: An antenna structure is provided. The antenna structure includes a first insulating substrate, a second insulating substrate, a first antenna, a second antenna, a third antenna, a grounding element, and a feeding point. The first insulating substrate and the second insulating substrate are spaced apart from each other. The first antenna and the second antenna are respectively disposed on two side surfaces of the first insulating substrate. The first antenna has a first line of symmetry, and the second antenna has a second line of symmetry. The first line of symmetry and the second line of symmetry have an angle there-between, and the angle is within a range from 35 degrees to 55 degrees. The third antenna and the grounding element are respectively disposed on two side surfaces of the second insulating substrate. The feeding point is connected to the third antenna and the grounding element.

Abstract: An antenna structure is provided. The antenna structure includes an insulating seat, a first antenna and a second antenna that are disposed on the insulating seat, and two feeding points electrically coupled to the first antenna and the second antenna. The first antenna includes a first body portion and a plurality of first extending portions connected to the first body portion. Each of the plurality of first extending portions is non-parallel to the first body portion. The second antenna includes a second body portion and a plurality of second extending portions connected to the second body portion. The second body portion is spaced apart from the first body portion. Each of the plurality of second extending portions is non-parallel to the second body portion. The second extending portions and the first extending portions are spaced apart from each other and jointly generate a capacitance effect.

Abstract: An antenna structure is provided. The antenna structure includes an insulating seat, a first antenna and a second antenna disposed on the insulating seat, and two feeding points electrically coupled to the first antenna and the second antenna. The first antenna includes a first body portion and a plurality of first extending portions non-parallel to the first body portion. The second antenna includes a second body portion and a plurality of second extending portions. The second body portion is spaced apart from the first body portion and non-parallel to each of the second extending portions. A length of one of the second extending portion adjacent to a diagonal line of the second body portion is less than a length of another one of the second extending portions. The second extending portions and the first extending portions are spaced apart from each other and jointly generate a capacitance effect.

Abstract: A dual-polarized antenna structure is provided. The dual-polarized antenna structure includes an insulating substrate, two first antennas, two second antennas, a coupling unit, and two feeding points. The two first antennas are disposed on two sides of the insulating substrate, respectively. The two second antennas are disposed on the two sides of the insulating substrate, respectively. Each of the two second antennas includes two sub-antennas. In any one of the two sides of the insulating substrate, a region defined by orthogonally projecting two sub-middle segments of the two sub-antennas onto another one of the two sides of the insulating substrate overlaps with a main middle segment of the first antenna. The coupling unit is electrically coupled to the two sub-antennas on each of the two sides of the insulating substrate. The two feeding points are electrically coupled to the two first antennas and the two second antennas.

Abstract: A dual-polarized antenna structure is provided. The dual-polarized antenna structure includes an insulating substrate, two first antennas, two second antennas, a coupling unit, and two feeding points. The two first antennas are disposed on two sides of the insulating substrate, respectively. The two second antennas are disposed on the two sides of the insulating substrate, respectively. Each of the two second antennas includes two sub-antennas. In any one of the two sides of the insulating substrate, a region defined by orthogonally projecting two sub-middle segments of the two sub-antennas onto another one of the two sides of the insulating substrate overlaps with a main middle segment of the first antenna. The coupling unit is electrically coupled to the two sub-antennas on each of the two sides of the insulating substrate. The two feeding points are electrically coupled to the two first antennas and the two second antennas.

Abstract: A series-connected antenna structure is provided. The series-connected antenna structure includes an insulating substrate, a first connecting line, two first antennas, a second connecting line, two second antennas, and a load point. Two sub-antennas of one of the two first antennas are electrically coupled to a main section of the first connecting line, and two sub-antennas of another one of the two first antennas are respectively and electrically coupled to two subordinate sections of the first connecting line. Two sub-antennas of one of the two second antennas are electrically coupled to a main section of the second connecting line, and two sub-antennas of another one of the two second antennas are respectively and electrically coupled to two subordinate sections of the second connecting line. Each of the two second antennas and each of the two first antennas face opposite directions.

Abstract: A series-connected antenna structure is provided. The series-connected antenna structure includes an insulating substrate, a first connecting line, two first antennas, a second connecting line, two second antennas, and a load point. The first connecting line and the two first antennas are disposed on one of two surfaces of the insulating substrate, and the second connecting line and the two second antennas are disposed on another one of the two surfaces of the insulating substrate. Each of the two first antennas and each of the two second antennas have a same symmetrical shape. A region defined by orthogonally projecting any one of the two second antennas toward the first surface and one of the two first antennas that corresponds in position to the any one of the two second antennas jointly have a two-fold rotational symmetry relative to a corresponding one of the reference positions.

Abstract: A series-connected antenna structure is provided. The series-connected antenna structure includes an insulating substrate, a first connecting line, two first antennas, a second connecting line, two second antennas, and a load point. Two sub-antennas of one of the two first antennas are electrically coupled to a main section of the first connecting line, and two sub-antennas of another one of the two first antennas are respectively and electrically coupled to two subordinate sections of the first connecting line. Two sub-antennas of one of the two second antennas are electrically coupled to a main section of the second connecting line, and two sub-antennas of another one of the two second antennas are respectively and electrically coupled to two subordinate sections of the second connecting line. Each of the two second antennas and each of the two first antennas face opposite directions.

Abstract: A series-connected antenna structure is provided. The series-connected antenna structure includes an insulating substrate, a first connecting line, two first antennas, a second connecting line, two second antennas, and a load point. The first connecting line and the two first antennas are disposed on one of two surfaces of the insulating substrate, and the second connecting line and the two second antennas are disposed on another one of the two surfaces of the insulating substrate. Each of the two first antennas and each of the two second antennas have a same symmetrical shape. A region defined by orthogonally projecting any one of the two second antennas toward the first surface and one of the two first antennas that corresponds in position to the any one of the two second antennas jointly have a two-fold rotational symmetry relative to a corresponding one of the reference positions.

Abstract: A common antenna assembly and a common antenna structure are provided. The common antenna assembly includes a substrate, a plurality of patch antenna disposed on the substrate, a matching network disposed on the plurality of patch antennas, and a plurality of phase shifters electrically connected to the matching network. The substrate defines a first direction and a second direction that are perpendicular to each other. The patch antennas are defined into a plurality of antenna units. Each of the antenna units has four of the patch antennas. In each of the antenna units along the first direction, any one of the antenna units shares a longitudinal common antenna unit with each of the adjacent antenna units. In each of the antenna units along the second direction, any one of the antenna units shares a horizontal common antenna unit with each of the adjacent antenna units.

Abstract: A phased array antenna structure includes a carrier, a radiative layer and a circuit layer both disposed on the carrier, and a phase switch. The radiative layer includes two radiating portions. The circuit layer includes a phased antenna and a transmission circuit. The phased antenna including two end portions respectively connected to the two radiating portions. The transmission circuit includes a feeding end and an externally connecting end that is arranged adjacent to the phased antenna. The phase switch is connected to the externally connecting end of the transmission circuit, and the phase switch is configured to selectively connect only one of the two end portions of the phased antenna.

Abstract: A phased array antenna structure includes a carrier, a radiative layer and a circuit layer both disposed on the carrier, and a phase switch. The radiative layer includes two radiating portions. The circuit layer includes a phased antenna and a transmission circuit. The phased antenna including two end portions respectively connected to the two radiating portions. The transmission circuit includes a feeding end and an externally connecting end that is arranged adjacent to the phased antenna. The phase switch is connected to the externally connecting end of the transmission circuit, and the phase switch is configured to selectively connect only one of the two end portions of the phased antenna.

Abstract: A low-frequency antenna module includes two switching units, a first matching circuit, a second matching circuit, and a low-frequency antenna. Each of the two switching units includes an electrical connection point, a first switching point, and a second switching point. The first matching circuit is electrically connected to the two first switching points, the second matching circuit is electrically connected to the two second switching points, and the low-frequency antenna is electrically connected to one of the two electrical connection points. The two switching units are synchronously operated to electrically connect the two electrical connection points to the two first switching points or to the two second switching points. Thus, the low-frequency antenna can be applied to match the first matching circuit in a first low-frequency band or the second matching circuit in a second low-frequency band different from the first low-frequency band.

Abstract: A low-frequency antenna module includes two switching units, a first matching circuit, a second matching circuit, and a low-frequency antenna. Each of the two switching units includes an electrical connection point, a first switching point, and a second switching point. The first matching circuit is electrically connected to the two first switching points, the second matching circuit is electrically connected to the two second switching points, and the low-frequency antenna is electrically connected to one of the two electrical connection points. The two switching units are synchronously operated to electrically connect the two electrical connection points to the two first switching points or to the two second switching points. Thus, the low-frequency antenna can be applied to match the first matching circuit in a first low-frequency band or the second matching circuit in a second low-frequency band different from the first low-frequency band.

Abstract: A radiofrequency antenna device includes a carrier, an antenna structure, a high-frequency blocking unit, and a proximity sensor (P-sensor), which are disposed on the carrier. The antenna structure includes a supporting frame disposed on the carrier, a first coupling segment disposed on the supporting frame, a second coupling segment disposed on the carrier, an insulating adhesive layer connected between the first and the second coupling segments, a radiating body disposed on the supporting frame and connected to the first coupling segment, and a feeding conductor disposed on the supporting frame. The feeding conductor is configured to transmit a signal to the radiating body. The high-frequency blocking unit is electrically connected to the first coupling segment. The P-sensor is electrically connected to the high-frequency blocking unit, and the P-sensor is electrically connected to the first coupling segment and the radiating body through the high-frequency blocking unit.

Abstract: An antenna structure includes a first conductor, a high-frequency blocking unit, and a second conductor. The first conductor includes a feeding segment, a coupling segment spaced apart from the feeding segment, and a DC blocking unit connected between the feeding segment and the coupling segment. The high-frequency blocking unit is connected to the coupling segment. The second conductor is spaced apart from the first conductor and couples with the coupling segment. An end of the second conductor is connected to a ground, and the second conductor is provided without connecting any capacitance member and any inductance member. The coupling segment is used as a capacitor electrode for detecting an external object. When the coupling segment is in a capacitor electrode mode, a capacitance value between the coupling segment and the external object is variable according to a distance between the coupling segment and the external object.

Abstract: A radiofrequency antenna device includes a carrier, an antenna structure, a high-frequency blocking unit, and a proximity sensor (P-sensor), which are disposed on the carrier. The antenna structure includes a supporting frame disposed on the carrier, a first coupling segment disposed on the supporting frame, a second coupling segment disposed on the carrier, an insulating adhesive layer connected between the first and the second coupling segments, a radiating body disposed on the supporting frame and connected to the first coupling segment, and a feeding conductor disposed on the supporting frame. The feeding conductor is configured to transmit a signal to the radiating body. The high-frequency blocking unit is electrically connected to the first coupling segment. The P-sensor is electrically connected to the high-frequency blocking unit, and the P-sensor is electrically connected to the first coupling segment and the radiating body through the high-frequency blocking unit.

Abstract: An antenna structure of an external antenna device includes an elongated substrate, a grounding segment, an antenna segment, a matching module, and a low-frequency extending segment, the latter four of which are disposed on the substrate. The grounding segment and the low-frequency extending segment are respectively arranged on two opposite sides of the antenna segment. The antenna segment includes a feeding portion, a high-frequency portion, and a low-frequency portion. The high-frequency portion and the low-frequency portion are electrically connected to the feeding portion and the grounding segment via the matching module. The low-frequency portion and the low-frequency extending segment each has a signal path, and a total length of the two signal paths is 0.375˜0.625 times of a wavelength corresponding to a center frequency of a low-frequency band. The low-frequency extending segment is arranged apart from and is electrically coupled to the low-frequency portion.

Abstract: An antenna structure includes a first conductor, a high-frequency blocking unit, and a second conductor. The first conductor includes a feeding segment, a coupling segment spaced apart from the feeding segment, and a DC blocking unit connected between the feeding segment and the coupling segment. The high-frequency blocking unit is connected to the coupling segment. The second conductor is spaced apart from the first conductor and couples with the coupling segment. An end of the second conductor is connected to a ground, and the second conductor is provided without connecting any capacitance member and any inductance member. The coupling segment is used as a capacitor electrode for detecting an external object. When the coupling segment is in a capacitor electrode mode, a capacitance value between the coupling segment and the external object is variable according to a distance between the coupling segment and the external object.

Abstract: An antenna structure of an external antenna device includes an elongated substrate, a grounding segment, an antenna segment, a matching module, and a low-frequency extending segment, the latter four of which are disposed on the substrate. The grounding segment and the low-frequency extending segment are respectively arranged on two opposite sides of the antenna segment. The antenna segment includes a feeding portion, a high-frequency portion, and a low-frequency portion. The high-frequency portion and the low-frequency portion are electrically connected to the feeding portion and the grounding segment via the matching module. The low-frequency portion and the low-frequency extending segment each has a signal path, and a total length of the two signal paths is 0.375˜0.625 times of a wavelength corresponding to a center frequency of a low-frequency band. The low-frequency extending segment is arranged apart from and is electrically coupled to the low-frequency portion.