Abstract:
An apparatus for wireless charging using radio frequency (RF) energy includes a first charger portion having first and second charging areas. The first and second charging areas are located in a common plane each having at least one coil for wirelessly charging a charge receiving device placed in proximity thereto. The coils include respective windings which are wound in opposing directions each coil being connected in series each coil configured to charge at least one charge receiving device.A second charger portion has a third charging area having at least one coil including a winding for wirelessly charging a charge receiving device placed in proximity to the third charging area the coil in the third charging area being connected in series with the coils in the first and second charging areas the third charging area located in a plane that is orthogonal to the plane of the first and second charging areas.
Abstract:
a invenção refere-se a métodos, sistemas, e dispositivos de comunicações sem fio. em alguns sistemas, um equipamento de usuário (ue) pode usar transmissões que causam exposição à densidade de potência (pde) aos usuários nas proximidades. para reduzir a pde de um módulo de antena (por exemplo, abaixo de um limiar de pde máximo), o ue pode implementar uma faixa de blindagem ao redor do módulo de antena. por exemplo, o módulo de antena pode incluir um substrato que tem uma primeira superfície e um conjunto de elementos de antena na primeira superfície. a faixa de blindagem pode encerrar o conjunto de elementos de antena do módulo de antena e se estender na direção oposta à primeira superfície acima dos elementos de antena. a faixa de blindagem pode reduzir a pde fora de um campo de visão do módulo de antena. adicionalmente, em alguns casos, a colocação do módulo de antena no ue e os materiais usados para construir o ue podem reduzir adicionalmente a pde.
Abstract:
Exemplary embodiments are related to multi-type antennas. A device may include an antenna and a ground plane. The device may further include a low-pass filter for coupling the antenna to the ground plane in a first mode of operation and isolating the antenna from the ground plane in a second, different mode of operation.
Abstract:
An embodiment of a system for wirelessly charging a wrist- worn device may include a radio frequency (RF) charging energy generating element, and an antenna (120) configured to radiate the RF charging energy, the antenna comprising a first coil (202) and a second coil (204), the first coil and the second coil each comprising a plurality of windings, the windings of the first coil being wound in a direction opposite the direction of the windings of the second coil. An embodiment of a wrist-worn charge-receiving device may include an antenna coil (160) adapted to receive radio frequency (RF) charging energy, the antenna coil comprising non-uniform windings; and a rechargeable power source coupled to the antenna coil, the antenna coil adapted to provide the RF charging energy to the rechargeable power source.
Abstract:
An apparatus for wireless charging using radio frequency (RF) energy includes a first charger portion having first and second charging areas. The first and second charging areas are located in a common plane, each having at least one coil for wirelessly charging a charge-receiving device placed in proximity thereto. The coils include respective windings, which are wound in opposing directions, each coil being connected in series, each coil configured to charge at least one charge-receiving device.A second charger portion has a third charging area having at least one coil including a winding for wirelessly charging a charge-receiving device placed in proximity to the third charging area, the coil in the third charging area being connected in series with the coils in the first and second charging areas, the third charging area located in a plane that is orthogonal to the plane of the first and second charging areas.
Abstract:
The invention utilizes small, narrow-band and frequency adaptable antennas to provide coverage to a wide range of wireless modes and frequency bands on a host wireless device. The antennas have narrow pass-band characteristics, require minimal space on the host device, and allow for smaller form factor. The frequency tunability further allows for a fewer number of antennas to be used. The operation of the antennas may also be adaptably relocated from unused modes to in-use modes to maximize performance. These features of the antennas result in cost and size reductions. In another aspect, the antennas may be broadband antennas.