Abstract: Mobile devices with integrated slot antennas are provided are provided. A representative mobile device includes: an exterior housing having a front and a back and defining an interior; a display, mounted to the housing, configured to display images at the front of the housing; and an antenna structure positioned within the interior; the housing having a first portion and a second portion, each of which is formed of metal, the first portion being located at the back of the housing and defining a first slot such that the antenna structure and the first slot form a first slot antenna, the second portion being located at the front of the housing and defining a second slot such that the antenna structure and the second slot form a second slot antenna.

Abstract: A mobile device includes a ground element and an antenna element. The antenna element includes a first radiation portion, a second radiation portion, and a third radiation portion. The first radiation portion is electrically connected between a feeding point and an edge of the ground element, and the antenna element operates in a first frequency band through a first path formed by the first radiation portion. A first end of the second radiation portion is electrically connected to the first radiation portion, and a second end of the second radiation portion is a first open end. The third radiation portion is electrically connected between the second radiation portion and the edge of the ground element. The antenna element operates in a second frequency band through a second path formed by the second radiation portion and the third radiation portion.

Abstract: A mobile device includes a first nonconductive supporting element, a second nonconductive supporting element, and an antenna structure. The first nonconductive supporting element and the second nonconductive supporting element are adjacent to each other. The first nonconductive supporting element and the second nonconductive supporting element have different heights. The antenna structure is formed on the first nonconductive supporting element and the second nonconductive supporting element. The antenna element includes a feeding connection element, a first radiation element, and a second radiation element. The feeding connection element is coupled to a feeding point. The first radiation element and the second radiation element are coupled to the feeding connection element. The feeding connection element is disposed between the first radiation element and the second radiation element.

Abstract: A communication device including a ground plane and an antenna element is provided. The antenna element includes a feeding portion, a first radiation portion, a second radiation portion and an adjusting portion. The first radiation portion and the feeding portion form a first resonant path, and the first radiation portion includes a first portion and a second portion. The first portion faces a first edge of the ground plane and the second portion, and the second portion extends from a second edge of the ground plane. The second radiation portion and the feeding portion form a second resonant path. The antenna element operates in a first band and a second band through the first resonant path and the second resonant path. The adjusting portion and part of the first radiation portion form a current-dividing path to adjust impedance of the antenna element operating in the second band.

Abstract: A multi-way pipe connector for a tubular frame, applied to connect a plurality of connection tubes so as to form the tubular frame, includes a main connector body, a plurality of connection protrusions and a plurality of elastic O-rings. The connection protrusions are extending individually in corresponding extension directions from the main connector body, and each of the connection protrusions has an outer wall including at least one annular groove. Each of the plurality of elastic O-rings is to sleeve one said corresponding annular groove of the respective connection protrusion so as to form a dimensional interference fit relationship with an inner wall of the corresponding connection tube sleeving the connection protrusion.

Abstract: An electronic device including a metal element and an antenna element is provided. The antenna element is disposed on a substrate and includes a radiation portion and a connection portion. A first end of the radiation portion has a feeding point for receiving a feeding signal, and a second end of the radiation portion is an open end. A first end of the connection portion is electrically connected to the first end of the radiation portion. A second end of the connecting portion has a first ground point to be electrically connected the metal element. An orthogonal projection of the metal element on the substrate and an orthogonal projection of the antenna element on the substrate are overlapped with each other. The radiation portion is electrically connected the metal element through a second ground point.

Abstract: A mobile device includes a dual band T-shaped antenna and a sensing element. The sensing element includes a first sensing part extending in first direction, a second sensing part, and a third sensing part, wherein the second sensing part and the third sensing part each includes portions that extend in a second direction that is perpendicular to the first direction. The sensing element is used to both detect proximity to an object, to meet specific absorption rate (SAR) criteria, and to affect resonance of the dual band T-shaped antenna.

Abstract: A mobile device includes a ground element and an antenna element. The antenna element includes a first radiation portion, a second radiation portion, and a third radiation portion. The first radiation portion is electrically connected between a feeding point and an edge of the ground element, and the antenna element operates in a first frequency band through a first path formed by the first radiation portion. A first end of the second radiation portion is electrically connected to the first radiation portion, and a second end of the second radiation portion is a first open end. The third radiation portion is electrically connected between the second radiation portion and the edge of the ground element. The antenna element operates in a second frequency band through a second path formed by the second radiation portion and the third radiation portion.

Abstract: An antenna includes a metal member, a closed slot disposed in the metal member, and a feed element having a first feed portion and a second feed portion, the first and second feed portions crossing the closed slot, and being electrically connected to each other. The feed element enables the closed slot to resonate at two different frequency bands and enables both bands to be individually tunable. The antenna can be incorporated into a metal cover or case of a mobile communication device.

Abstract: A mobile device includes a ground element and an antenna structure. The antenna structure includes a feeding connection element, a first radiation element, a second radiation element, a shorting element, and a parasitic radiation element. The feeding connection element is coupled to a signal source. The first radiation element is coupled to the feeding connection element. The first radiation element has an open end. The second radiation element is coupled to the feeding connection element. The second radiation element has an open end. The feeding connection element is coupled through the shorting element to the ground element. The parasitic radiation element is adjacent to the second radiation element.

Abstract: A mobile device includes a system ground plane and an antenna system. The antenna system includes a dielectric substrate, an antenna ground plane, a radiation element, and at least one feeding element. The antenna ground plane is coupled to the system ground plane. The feeding element is coupled to a signal source. The feeding element is positioned between the radiation element and the antenna ground plane. The feeding element and the radiation element are completely separate from each other. The radiation element is excited by the feeding element by coupling.

Abstract: A mobile device includes a ground element and an antenna structure. The antenna structure includes a feeding connection element, a first radiation element, a second radiation element, a shorting element, and a parasitic radiation element. The feeding connection element is coupled to a signal source. The first radiation element is coupled to the feeding connection element. The first radiation element has an open end. The second radiation element is coupled to the feeding connection element. The second radiation element has an open end. The feeding connection element is coupled through the shorting element to the ground element. The parasitic radiation element is adjacent to the second radiation element.

Abstract: A mobile device includes a ground element and an antenna structure. The antenna structure includes a ground branch, a feeding branch, a low-frequency radiation branch, and a high-frequency radiation branch. The feeding branch is coupled through the ground branch to the ground element. The low-frequency radiation branch is coupled to the feeding branch. The high-frequency radiation branch is coupled to the feeding branch. The low-frequency radiation branch has a meandering structure for reducing the SAR (Specific Absorption Rate) of the antenna structure.

Abstract: An electronic device including a metal element and an antenna element is provided. The antenna element is disposed on a substrate and includes a radiation portion and a connection portion. A first end of the radiation portion has a feeding point for receiving a feeding signal, and a second end of the radiation portion is an open end. A first end of the connection portion is electrically connected to the first end of the radiation portion. A second end of the connecting portion has a first ground point to be electrically connected the metal element. An orthogonal projection of the metal element on the substrate and an orthogonal projection of the antenna element on the substrate are overlapped with each other. The radiation portion is electrically connected the metal element through a second ground point.

Abstract: An antenna structure includes a ground element, a first radiation branch, and a second radiation branch. The first radiation branch has a first end and a second end. The first end of the first radiation branch is coupled to a signal source. The second end of the first radiation branch is open. The second radiation branch has a first end and a second end. The first end of the second radiation branch is coupled to the signal source. The second end of the second radiation branch is coupled to the ground element. The length of the second radiation branch is substantially equal to that of the first radiation branch.

Abstract: A communication device including a ground plane and an antenna element is provided. The antenna element includes a feeding portion, a first radiation portion, a second radiation portion and an adjusting portion. The first radiation portion and the feeding portion form a first resonant path, and the first radiation portion includes a first portion and a second portion. The first portion faces a first edge of the ground plane and the second portion, and the second portion extends from a second edge of the ground plane. The second radiation portion and the feeding portion form a second resonant path. The antenna element operates in a first band and a second band through the first resonant path and the second resonant path. The adjusting portion and part of the first radiation portion form a current-dividing path to adjust impedance of the antenna element operating in the second band.

Abstract: An antenna includes a metal member, a closed slot disposed in the metal member, and a feed element having a first feed portion and a second feed portion, the first and second feed portions crossing the closed slot, and being electrically connected to each other. The feed element enables the closed slot to resonate at two different frequency bands and enables both bands to be individually tunable. The antenna can be incorporated into a metal cover or case of a mobile communication device.

Abstract: A mobile communication device including a substrate, an antenna element and a sensing element is provided. The substrate includes a first surface and a second surface opposite to each other. The antenna element is disposed on the first surface and converts a feeding signal into an electromagnetic wave. The antenna element includes a first portion receiving the feeding signal and a second portion electrically connected to a ground. The sensing element is disposed on the second surface and generates a sensing signal in response to proximity of an object. An orthogonal projection of the sensing element on the first surface and an orthogonal projection of the second portion on the first surface are overlapped with each other and have the same shape.

Abstract: A mobile device includes an antenna structure, a tunable circuit element, a bias tee element, an inductive element, and a capacitive element. The tunable circuit element is in the antenna structure. The bias tee element has a first input terminal for receiving a power signal, a second input terminal for receiving an RF (Radio Frequency) signal, and an output terminal for outputting a mixed signal. The inductive element is configured to remove high-frequency noise from the power signal. The capacitive element is configured to remove low-frequency noise from the RF signal. The output terminal of the bias tee element is coupled to a feeding point on the antenna structure. The antenna structure is excited by the mixed signal. The tunable circuit element generates different impedance values according to the mixed signal.

Abstract: An antenna structure includes a ground element, a first radiation branch, and a second radiation branch. The first radiation branch has a first end and a second end. The first end of the first radiation branch is coupled to a signal source. The second end of the first radiation branch is open. The second radiation branch has a first end and a second end. The first end of the second radiation branch is coupled to the signal source. The second end of the second radiation branch is coupled to the ground element. The length of the second radiation branch is substantially equal to that of the first radiation branch.