A system that incorporates teachings of the present disclosure may include, for example, a non-transitory computer-readable storage medium including computer instructions to obtain at least one operational parameter associated with a communication device and to adjust a steerable antenna of the communication device when the communication device does not satisfy an impedance threshold, where the satisfying of the impedance threshold is determined based on the at least one operational parameter. Additional embodiments are disclosed.

Method and apparatus for tuning a communication device

Methods for generating a look-up table relating a plurality of complex reflection coefficients to a plurality of matched states for a tunable matching network. Typical steps include measuring a plurality of complex reflection coefficients resulting from a plurality of impedance loads while the tunable matching network is in a predetermined state, determining a plurality of matched states for the plurality of impedance loads, with a matched state determined for each of the plurality of impedance loads and providing the determined matched states as a look-up table. A further step is interpolating the measured complex reflection coefficients and the determined matching states into a set of complex reflection coefficients with predetermined step sizes.

Methods for tuning an adaptive impedance matching network with a look-up table

Shared antenna structures for near-field communications and non-near-field communications circuitry

An electronic device includes a metal housing, a conductive member disposed adjacent to the metal housing, a plurality of ground parts including a first ground part electrically connected with a first point of the conductive member and a second ground part electrically connected with a second point of the conductive member, a ground plate electrically connected with the metal housing and electrically connected with the conductive member via the plurality of ground parts, and a feeding part electrically connected with the conductive member.

Electronic device comprising antenna

A system that incorporates teachings of the present disclosure may include, for example, a matching network including a tunable reactance circuit configured to be coupled to at least one of a transmitter portion and a receiver portion of a communication device, wherein the tunable reactance circuit is adjustable to a plurality of tuning states, and wherein the determination of a tuning state is based on parameters associated with a detected interference. Additional embodiments are disclosed.

Method and apparatus for managing interference in a communication device

A chargeable communication module is provided, which includes: a wireless power charging coil; a wireless communication coil being electrically isolated from the wireless power charging coil; and a magnetic body. The wireless power charging coil is disposed on a surface of the magnetic body. The wireless communication coil is arranged peripheral to the wireless power charging coil. A center of the wireless power charging coil is offset from a center of the wireless communication coil.

Non-contact wireless communication coil, transmission coil, and portable wireless terminal

Disclosed are a antenna device and a portable wireless terminal equipped with same that achieve low coupling and high gain properties in each of at least two frequency bands without increasing the number of power supply units in a configuration wherein a wireless circuit and two antenna elements that operate in the same frequency band are disposed within a portable wireless terminal. A first connection circuit (108) adjusts the mutual coupling impedance between a first antenna element (106) and a second antenna element (107) in a first frequency band in a manner so that the impedance cancels, reducing coupling deterioration between the antenna elements. A second connection circuit (111) adjusts the mutual coupling impedance between a first passive element (109) and a second passive element (110) in a second frequency band in a manner so that the impedance cancels, reducing the coupling degradation between the passive elements. Through this configuration, it is possible to achieve a low-coupling antenna operating at two frequencies in a portable wireless terminal.

Antenna device and portable wireless terminal equipped with same

A coil module is disposed inside an electronic apparatus and receives prescribed power. The coil module includes a loop coil, a plate-like magnetic body that is disposed on the loop coil, and a conductive member that has prescribed conductivity and is disposed parallel with the plate-like magnetic body and on a surface, opposite to a surface on which the loop coil is disposed, of the magnetic body. The conductive member projects outward relative to at least a portion of a circumferential surface of the magnetic body.

Coil module and electronic apparatus

Provided are an antenna device and a mobile wireless terminal equipped with the antenna device, which achieve high gain performance with low coupling by reducing the amperage that does not contribute to radiation by canceling out the interconnection between antenna elements in a configuration in which two antenna elements that operate in the same frequency band are positioned inside a mobile wireless terminal. A connection circuit (108) performs adjustments in such a manner that the interconnection is cancelled between a first antenna element (106) and a second antenna element (107) in a first frequency band, reducing degradation of the connection between the antenna elements. At the same time, amperage that does not contribute to radiation is reduced by setting the length of the short side (110) of the first antenna element and the length of the short side (109) of the second antenna element to different predetermined lengths. This configuration makes it possible to attain a highly-efficient MIMO antenna array with low coupling that operates at the same frequency in a mobile wireless terminal.

Antenna device and mobile wireless terminal equipped with same

Disclosed are a MIMO array antenna device and a mobile wireless terminal with same mounted thereon, that achieve low coupling and high gain properties without connecting antenna elements by a component etc., and with a configuration whereby two antenna elements that operate within the same frequency band are positioned close to each other in the mobile wireless terminal. A second slit (117) and a fourth slit (119) disposed in a first antenna element (150) and a first slit (116) and a third slit (118) disposed in a second antenna element (151) are adjusted so that the mutual coupling between the first antenna element (150) and the second antenna element (151) in the desired frequency band is cancelled, to reduce coupling degradation between antenna elements without connecting the antenna elements by a component, etc. This configuration enables low-coupling, highly-efficient MIMO array antennas that operate within the same frequency band to be achieved in a mobile wireless terminal.

Takanori Hirobe

Papers

Non-contact wireless communication coil, transmission coil, and portable wireless terminal

Antenna device and portable wireless terminal equipped with same

Coil module and electronic apparatus

Antenna device and mobile wireless terminal equipped with same

Antenna device and mobile wireless terminal with same mounted