Abstract: A multi-frequency antenna includes a first antenna (1) and a second antenna (2) both operating at wireless wide area network, a third antenna (3) and a fourth antenna (4) both operating at wireless local area network. The first antenna, the second antenna, the third antenna and the fourth antenna are integrally made from a metal sheet and have a common grounding portion (50). The first and the second antennas have a first connecting portion (12) on which a feeding point (120) is located, and the third and the fourth antenna have a second connecting portion (34) on which another feeding point (340) is located.

Abstract: A multi-band antenna includes a grounding element having a first side, a radiating element separated form the first side of the grounding element, and a connecting element. The connecting element connects the grounding element to the radiating element and includes a first end slantwise extending from the grounding to form a first angle except a right angle between the connecting element and the grounding element.

Abstract: An antenna assembly includes a supporter forming two different continuous first and second surfaces, and a monopole antenna assembled on the supporter and comprising a radiating element comprising a first radiating portion, a second radiating portion respectively worked at different frequency bands, and a grounding element separated from the radiating element; wherein the first radiating portion, the radiating portion and the grounding element connecting together across the first and second surfaces to form a solid antenna.

Abstract: A multi-band antenna (1) includes a first antenna (1a), a second antenna (1b) and a grounding element (2). The first antenna (1a) includes a radiating element (10), a connecting element (20) connecting the radiating element (10) and the grounding element (2) and a feeding line. The radiating element (10) includes a first radiating section (11) working at a lower frequency, a second radiating (12) section working at a higher frequency and a third radiating section (13).

Abstract: A multi-band antenna used in a portable electrical device can operate in WWAN. The multi-band antenna includes a PCB, a first antenna body, and a second antenna body. The PCB has a first surface and an opposite second surface and defines a through hole extending from the first surface to the second surface. The first antenna body is formed on the first surface of the PCB comprising a first radiating element and a first grounding element. The second antenna body is formed on the second surface of the PCB. The second antenna body comprises a second radiating element, a second grounding element, and a connecting element connecting the second radiating element and the second grounding element. The first radiating element and the second radiating element electrically connect with each other via the through hole of the PCB. A feeding line has an inner conductor electrically connecting to the first radiating element and an outer conductor electrically connecting to the first grounding element.

Abstract: A multi-band antenna, made by an integral plate and comprises a radiating element, a grounding element, a slit formed as part of the plate, and a feeding line; wherein horizontal conductive portion of said plate are separated from each other with said slit between them and serve as the radiating element and the ground element respectively; the feeding line, comprising an inner conductor connected with the radiating element and an outer conductor connected with the grounding element; wherein said radiating element comprising at least two radiating portions defining at least one radiating arm with gradually increasing width, and at least two radiating portion cooperatively acting to achieve a Ultra Wide Band antenna.

Abstract: A multi-frequency antenna includes a first antenna (1) and a second antenna (2) both operating at wireless wide area network, a third antenna (3) and a fourth antenna (4) both operating at wireless local area network. The first antenna, the second antenna, the third antenna and the fourth antenna are integrally made from a metal sheet and have a common grounding portion (50). The first and the second antennas have a first connecting portion (12) on which a feeding point (120) is located, and the third and the fourth antenna have a second connecting portion (34) on which another feeding point (340) is located.

Abstract: A multi-band antenna (1) includes a first antenna (1a), a second antenna (1b) and a grounding element (2). The first antenna (1a) includes a radiating element (10), a connecting element (20) connecting the radiating element (10) and the grounding element (2) and a feeding line. The radiating element (10) includes a first radiating section (11) working at a lower frequency, a second radiating (12) section working at a higher frequency and a third radiating section (13).

Abstract: A multi-frequency antenna includes a first antenna (1) and a second antenna (2) both operating at wireless wide area network, a third antenna (3) and a fourth antenna (4) both operating at wireless local area network. The first antenna, the second antenna, the third antenna and the fourth antenna are integrally made from a metal sheet and have a common grounding portion (50). The first and the second antennas have a first connecting portion (12) on which a feeding point (120) is located, and the third and the fourth antenna have a second connecting portion (34) on which another feeding point (340) is located.