Abstract:
An antenna device includes a dual-loop radiating element, first and second radiating arms, a feeding element, and a grounding element. The dual-loop radiating element has first and second loops. Each of the first and second radiating arms is disposed in a respective one of the first and second loops. The feeding element interconnects the first and second loops and the first and second radiating arms. The grounding element is connected to the first and second loops.
Abstract:
An antenna unit includes left and right antennas that are spaced apart from each other and that are operable within a first frequency bandwidth, and a parasitic coupler that is spaced apart from and disposed between the left and right antennas, and that is electromagnetically coupled to the left and right antennas so as to be operable within a second frequency bandwidth.
Abstract:
An antenna includes a first radiating element, a feeding point, a grounding point, a second radiating element, and first and second conductive elements. The first radiating element has opposite first and second sides. The feeding point is provided on the first radiating element, and is disposed adjacent to the first side of the first radiating element. The grounding point is provided on the first radiating element, and is disposed adjacent to the second side of the first radiating element. The second radiating element is spaced apart from and overlaps the first radiating element. The first conductive element is disposed adjacent to the feeding point, and interconnects the first and second radiating elements. The second conductive element is disposed adjacent to the grounding point, and interconnects the first and second radiating elements.
Abstract:
A multi-band antenna for a portable communication device is disclosed, in which the communication device includes a first housing, a second housing and a substrate. The multi-band antenna includes a feeding portion, a system ground plane, a metal ring, a resonant cavity, a first and a second radiating portion. The system ground plane is disposed on the substrate. The metal ring is connected to the first housing, and forms a space with the first housing to accommodate the substrate, in which the metal ring is electrically coupled to the system ground plane through a plurality of ground ends. The resonant cavity is formed between the system ground plane and the metal ring to generate a first resonant mode. The first and the second radiating portion are disposed on the second housing, for generating a second and a third resonant mode, respectively.
Abstract:
An antenna assembly includes first and second antennas each generating a resonant mode to cover an operating bandwidth, and a transmission line. The first includes a first radiation unit with a feed-in portion coupled to a first feed portion in contact with a core wire of a coaxial cable and a first grounding portion. The second antenna includes a second radiation unit with a second feed-in portion coupled to a second feed portion in contact with a conductive shielding layer of the coaxial cable and a second grounding portion. The transmission line includes first and second connecting portions coupled respectively to the second feed portion of the second feed-in portion. When a signal within the operating bandwidth is transmitted through the coaxial cable, the energy of the signal is distributed among the first and second antennas.
Abstract:
An antenna device includes a grounding element, a radiating element, and first and second feeding elements. The radiating element includes a first segment that extends from the grounding element and that has an end distal from the grounding element, and second and third segments that extend from the end of the first segment in opposite directions. Each of the first and second feeding elements includes first and second segments. The first segment of each of the first and second feeding elements is disposed proximate to a respective one of the second and third segments of the radiating element. The second segment of each of the first and second feeding elements is disposed proximate to the grounding element.
Abstract:
An antenna device includes a substrate, and a dual-band antenna disposed on a surface of the substrate. The dual-band antenna includes a feed-in section, a first radiator arm, a second radiator arm, a third radiator arm, and a ground section. The feed-in section is for signal feed-in, and has opposite first and second ends. The first radiator arm extends from the first end of the feed-in section and is parallel to the feed-in section. The second radiator arm is connected to the second end of the feed-in section and extends parallel to the feed-in section. The third radiator arm is disposed adjacent to and extends parallel to the first radiator arm in a manner that the feed-in section is disposed between the third radiator arm and the second radiator arm. The ground section is connected to the third radiator arm.
Abstract:
An antenna includes a dielectric substrate, a grounding plane, first and second grounding elements, and first and second radiating elements. The grounding plane is formed on the dielectric substrate. The first and second grounding elements are formed on the dielectric substrate, have a curved shape and a size that are identical, and are connected to the grounding plane. The first and second radiating elements are formed on the dielectric substrate, have a curved shape and a size that are identical, are operable in the same frequency range, and are connected to the first and second grounding elements, respectively.
Abstract:
An antenna device includes a grounding element and an antenna. The antenna includes a feeding element, first and second radiating elements, and a parasitic element. The first radiating element is coupled to the grounding element. The second radiating element is coupled to the feeding element, is disposed proximate to the first radiating element, and cooperates with the grounding element and the first radiating element to define an area thereamong. The parasitic element is disposed in the area and extends from the grounding element.
Abstract:
An antenna includes a dielectric substrate, a grounding plane, first and second grounding elements, and first and second radiating elements. The grounding plane is formed on the dielectric substrate and is disposed between the first and second radiating elements. The first and second grounding elements extend from the grounding plane away from each other. The first and second radiating elements are coupled electromagnetically to the first and second grounding elements, respectively.