An RF device includes a first antenna set made up of a first antenna and a second antenna, the first and second antennas being planar in shape and both lying in a common first plane, the first antenna being arranged to operate in a first frequency band and the second antenna being arranged to operate in a second frequency band; and a first isolator, the first isolator being planar in shape and lying in the first plane between the first and second antennas, the first isolator having at least one branch that is electrically conductive, the first isolator being electrically floating, the first isolator being arranged to reduce first coupling by electromagnetic radiation between the first and second antennas in the first frequency band and/or in the second frequency band.

A radiating element includes a radiator mounted on a feed stalk. The radiator includes a first dipole having first and second dipole arms and a second dipole having third and fourth dipole arms, where the first and second dipoles are in a cross-dipole arrangement. Each of the dipole arms includes a trunk conductive segment and a branch conductive segment, where one end of the branch conductive segment is connected to the trunk conductive segment and the other end is open. The branch conductive segment is configured such that a current induced by radiation in a preselected frequency range higher than an operating frequency range of the radiating element in a portion, to which the branch conductive segment is connected, of the trunk conductive segment of the dipole arm is opposite to a current induced in the branch conductive segment.

A reconfigurable antenna includes a bottom plate, a vertically polarized high-density antenna, and a controllable reflector. The controllable reflector is located between the bottom plate and the vertically polarized high-density antenna, and a projection of the controllable reflector on the bottom plate is at a center of a projection of the vertically polarized high-density antenna on the bottom plate. The controllable reflector includes a switch, and the switch is configured to enable the controllable reflector to be in an operating state or an off state.

Methods, systems, and apparatus for using antennas for millimeter wave contactless communication. One of the apparatuses is a communication device that includes a transducer configured to convert electrical signals into extremely high frequency (EHF) electromagnetic signals, the EHF electromagnetic signals substantially emitted from a first surface of the communication device, wherein the transducer is positioned on a substrate of the communication device, and an integrated circuit coupled to the substrate, wherein the transducer includes multiple parallel resonant antenna elements in an array.

Wireless earphones comprising a first antenna module, at least one second antenna module, a radio frequency module, a sensing module, a speaker module and a processing module. The radio frequency module is used to receive or transmit radio frequency signals by the first antenna module or the second antenna module; the sensing module is used to sense a capacitance value of a first parasitic capacitance of the first antenna module and generate a corresponding first sensing signal and used to sense a capacitance value of a second parasitic capacitance of the second antenna module and generate a corresponding second sensing signal; the speaker module is used to play audio signals; and the processing module is used to generate a control signal according to the radio frequency signal, the first sensing signal or the second sensing signal to control the speaker module to play the audio signal corresponding to the control signal.

An antenna module includes an integrated circuit (IC), a substrate having a first region having one or more antenna disposed on a surface thereof and a second region flexibly bent and electrically connected to the IC to provide an electrical connection path to the one or more antenna and the IC, a set substrate electrically connected to the IC, and a set module disposed on the set substrate between the set substrate and the first region.

A scattering device 10 is described comprising a plurality of dipoles 20, each comprising a rod and a pair of plates 12, 22, the plates 12, 22 being located at the respective ends of the rod, the rods of the dipoles 20 being connected to one another and arranged such that the rods are angled relative to one another.

Described is an antenna structure including a first antenna configured to emit electromagnetic radiation having a first operational frequency band; a second antenna configured to emit electromagnetic radiation having a second operational frequency band; and wherein the second antenna comprises an inductive element configured to inhibit interference of the second antenna with the electromagnetic radiation emitted from the first antenna.

An electronic device according to various embodiments includes a mmWave antenna module including a plurality of first antenna elements disposed on a first surface that is oriented in a first direction, a first coupling unit that protrudes in a second direction from a second surface that is perpendicular to the first surface and is oriented in the second direction, and an RFIC disposed on a third surface oriented in a third direction opposite to the first direction. The electronic device also includes an antenna structure including a plurality of second antenna elements and a second coupling unit protruding from one surface of the antenna structure; a connection member electrically connected to at least one of the first coupling unit and the second coupling unit; a main PCB electrically connected to the mmWave antenna module; and a wireless communication circuit disposed on the main PCB.

According to various embodiment, an electronic device may include: a housing, a first substrate disposed in an inner space of the housing and including a first surface facing a first direction, a second surface facing a direction opposite to the first surface, and a first recess area at least partially corresponding to the first surface, a second substrate at least partially disposed in the first recess area of the first substrate, a third substrate at least partially disposed on one surface of the second substrate and including multiple antenna elements comprising at least one antenna, and a wireless communication circuit disposed on the second surface of the first substrate and electrically connected to the second substrate. The second substrate may include at least one matching circuit electrically connected to the wireless communication circuit corresponding to each of the multiple elements.