A multi-resonant, electrically-small antenna having a first helical arm and a second helical arm. The first helical arm encircles a first central axis and includes a proximal end. A radius between the first helical arm and the first central axis decreases in a distal direction away from the proximal end of the first helical arm. The second helical arm is nested in the first helical arm and encircles a second central axis. The second helical arm also includes a proximal end. A radius between the second helical arm and the second central axis decreases in a distal direction away from the proximal end of the second helical arm.

An antenna apparatus includes a conductive radiating element, a conductive member, and a first impedance circuit. The first impedance circuit includes a first parallel resonant circuit (an LC parallel resonant circuit) and is directly connected between the radiating element and the conductive member (the conductor plate). Since the first parallel resonant circuit has high impedance in its resonant frequency band and is equivalently in an open state, one end of the radiating element is opened in the resonant frequency band. Accordingly, the radiating element defines and functions as a standing-wave antenna that contributes to electric-field radiation and a loop portion including the radiating element, the conductive member, and the first impedance circuit defines and functions as a magnetic-field radiation antenna that contributes to magnetic-field radiation.

An antenna front-end module, a method, and an information handling system are provided. An antenna front-end module comprises a circuit board. The circuit board comprises an antenna tuning circuit adapted to tune a feed impedance of an antenna, the antenna electrically connected to the circuit board, and an antenna proximity sensing circuit adapted to obtain proximity sensing information indicative of proximity of a part of a human body to the antenna. A method comprises obtaining, at an antenna proximity sensing circuit on a circuit board, proximity sensing information indicative of proximity of a part of a human body to an antenna, the antenna electrically connected to the circuit board, and, in response to the obtaining, providing, to an antenna tuning circuit on the circuit board, a tuning parameter value to adapt antenna tuning for the proximity of the part of the human body to the antenna.

An antenna front-end module, a method, and an information handling system are provided. An antenna front-end module comprises a circuit board. The circuit board comprises an antenna tuning circuit adapted to tune a feed impedance of an antenna, the antenna electrically connected to the circuit board, and an antenna proximity sensing circuit adapted to obtain proximity sensing information indicative of proximity of a part of a human body to the antenna. A method comprises obtaining, at an antenna proximity sensing circuit on a circuit board, proximity sensing information indicative of proximity of a part of a human body to an antenna, the antenna electrically connected to the circuit board, and, in response to the obtaining, providing, to an antenna tuning circuit on the circuit board, a tuning parameter value to adapt antenna tuning for the proximity of the part of the human body to the antenna.

This application provides a terminal antenna, including a first radiator, a second radiator, a third radiator, a first regulating circuit, and a second regulating circuit. The third radiator includes a low frequency radiator and a medium-high frequency radiator. The first regulating circuit is configured to adjust a frequency of a resonance of a ¾λ, mode of a medium-high frequency produced by the low frequency radiator to be less than a frequency of a resonance of a left-handed antenna pattern. The second regulating circuit is configured to adjust the frequency of the resonance of the left-handed antenna pattern to be greater than the frequency of the resonance of the ¾λ, mode of the medium-high frequency produced by resonating by the low frequency radiator. Values of both the first distance and the second distance are less than 1/16λ, of a frequency band in which the third radiator produces a low frequency.

Provided is an antenna assembly including a conductive frame, and a resonance unit. The conductive frame is divided into first and second conductive branch by a slot. The resonance unit includes first and second resonance circuits. One terminal of the second resonance circuit is grounded, and another terminal is connected to the second conductive branch. A first signal source is capable of feeing a first current signal to the first conductive branch through the first resonance circuit and the first feeding point, enabling the first conductive branch to radiate a first radio frequency signal. The second signal source is capable of feeding a second current signal to the second conductive branch through the second feeding point, enabling the second conductive branch, under a resonance of the second resonance circuit, to radiate a second radio frequency signal.

Provided is an antenna assembly including a conductive frame, and a resonance unit. The conductive frame is divided into first and second conductive branch by a slot. The resonance unit includes first and second resonance circuits. One terminal of the second resonance circuit is grounded, and another terminal is connected to the second conductive branch. A first signal source is capable of feeing a first current signal to the first conductive branch through the first resonance circuit and the first feeding point, enabling the first conductive branch to radiate a first radio frequency signal. The second signal source is capable of feeding a second current signal to the second conductive branch through the second feeding point, enabling the second conductive branch, under a resonance of the second resonance circuit, to radiate a second radio frequency signal.

An antenna assembly includes a conductive frame, a filter module, and a feeding module. The conductive frame defined at least one gap. The gap divides the conductive frame into a first conductive branch with a first feeding point and a second conductive branch with a second feeding point. The first feed circuit is to feed an adjustable first current signal to the first conductive branch via the first filter circuit and the first feeding point, so that a first radiator on the first conductive branch is adjustable to radiate a first signal. The second feed circuit is to feed a second current signal to the second conductive branch via the second filter circuit and the second feeding point, and a second radiator on the second conductive branch radiates a second signal. An electronic device is also provided.

An antenna assembly may include a conductive frame, a resonant module and a signal source module. The conductive frame may define at least one slot, the slot may at least divide the conductive frame into a first conductive branch and a second conductive branch. A first feed point may be provided on the first conductive branch, and a second feed point may be provided on the second conductive branch. The resonant module may include a first resonant circuit and a second resonant circuit. The first signal source may feed a first current signal to the first conductive branch, to generate a plurality of resonant frequencies on the first conductive branch. The second signal source may feed a second current signal to the second conductive branch via the second resonant circuit and the second feed point, to generate at least one resonant frequency.

An antenna assembly includes a conductive frame defining at least one slot and divided into at least a first conductive branch and a second conductive branch independently by the slot, a feed point being arranged on the first conductive branch; a resonant circuit, a signal source being coupled to and feeding a current signal to the first conductive branch through the resonant circuit and the feed point, the current signal being coupled to the second conductive branch through the slot, and multiple resonant frequencies being generated on the first and the second conductive branches through the resonant circuit; and a switching circuit configured between perform a switching adjustment for the current signal coupled to the second conductive branch such that radio frequency signals including multiple operating frequency bands are radiated simultaneously on the first conductive branch and the second conductive branch; at least two operating frequency bands being switchable.