Abstract: An apparatus comprising: a deformable antenna configured to operate in a first physical configuration and configured to operate in a second physical configuration that is deformed relative to the first physical configuration; and magnetic material located in close proximity to the deformable antenna and configured to have a first physical configuration when the deformable antenna is in its first physical configuration and configured to have a second physical configuration that is deformed relative to the first physical configuration when the deformable antenna is in its second physical configuration, wherein the magnetic material when in its first physical configuration has a first magnetic permeability and when in its second physical configuration has a second magnetic permeability.

Abstract: An antenna arrangement operable at a first resonant frequency f having a corresponding resonant wavelength ? the antenna arrangement comprising: an antenna comprising a feed; a ground plane coupled to the antenna comprising a first region and a second region; and a grounded conductive structure coupled to the first region of the ground plane, wherein the second region of the ground plane is configured such that, at the first resonant frequency f the current flows predominantly in the grounded conductive structure compared to the second region of the ground plane.

Abstract: An apparatus comprising: a deformable antenna configured to operate in a first physical configuration and configured to operate in a second physical configuration that is deformed relative to the first physical configuration; and magnetic material located in close proximity to the deformable antenna and configured to have a first physical configuration when the deformable antenna is in its first physical configuration and configured to have a second physical configuration that is deformed relative to the first physical configuration when the deformable antenna is in its second physical configuration, wherein the magnetic material when in its first physical configuration has a first magnetic permeability and when in its second physical configuration has a second magnetic permeability.

Abstract: An antenna arrangement operable at a first resonant frequency f having a corresponding resonant wavelength ? the antenna arrangement comprising: an antenna comprising a feed; a ground plane coupled to the antenna comprising a first region and a second region; and a grounded conductive structure coupled to the first region of the ground plane, wherein the second region of the ground plane is configured such that, at the first resonant frequency f the current flows predominantly in the grounded conductive structure compared to the second region of the ground plane.

Abstract: The present invention relates to an antenna arrangement, an adaptive system comprising such arrangement, a portable electronic device comprising such arrangement or adaptive system, a method of manufacturing such an arrangement, and a computer-readable storage medium encoded with instructions for performing such method. The antenna arrangement can comprise at least one antenna element (110) configured to supply a current, at least one ground plane element (120) configured to conduct the current, and at least one magnetic element (130) configured to influence at least a part of the current in order to modify an electrical length of the at least one ground plane element (120). It enables to increase the electrical length of a terminal chassis, which may increase the operation bandwidth of the antenna-chassis combination. This effect can be further increased when combining at least one slot and at least one magnetic element covering the same at least partially.