A reconfigurable wireless power transfer system includes a first wireless transmission system, one or more secondary wireless transmission systems, and at least one wireless receiver system. The first wireless transmission system is configured to receive input power from an input power source, generate wireless power signals, and couple with one or more other antennas. Each secondary wireless transmission systems is configured to couple with one or more of another secondary transmission antenna, the first transmission antenna, and/or one or more receiver antennas. The secondary wireless transmission systems receive the AC wireless signals from the first wireless transmission system and repeat the AC wireless signals to one or more secondary transmission antennas, receiver antennas, or combinations thereof. The one or more receiver antennas are configured to receive the AC wireless signals to provide electrical power to a load operatively associated with a computer peripheral.

A reconfigurable wireless power transfer system includes a first wireless transmission system, one or more secondary wireless transmission systems, and at least one wireless receiver system. The first wireless transmission system is configured to receive input power from an input power source, generate wireless power signals, and couple with one or more other antennas. Each secondary wireless transmission systems is configured to couple with one or more of another secondary transmission antenna, the first transmission antenna, and/or one or more receiver antennas. The secondary wireless transmission systems receive the AC wireless signals from the first wireless transmission system and repeat the AC wireless signals to one or more secondary transmission antennas, receiver antennas, or combinations thereof. The one or more receiver antennas are configured to receive the AC wireless signals to provide electrical power to a load operatively associated with a computer peripheral.

A wearable device including an antenna structure, a chip having a receiver which is electrically coupled to the antenna structure and is configured to receive radio signals by means of the antenna structure, and a trigger device which is arranged in or on the wearable device, which device comprises electrically conductive material and which is configured to trigger foreign object detection in a wireless energy charger in accordance with a wireless charging standard for wirelessly charging an electronic device by means of taking up load from radio waves emitted by the wireless energy charger.

A wearable device including an antenna structure, a chip having a receiver which is electrically coupled to the antenna structure and is configured to receive radio signals by means of the antenna structure, and a trigger device which is arranged in or on the wearable device, which device comprises electrically conductive material and which is configured to trigger foreign object detection in a wireless energy charger in accordance with a wireless charging standard for wirelessly charging an electronic device by means of taking up load from radio waves emitted by the wireless energy charger.

A long-range wireless power transfer system 100 is disclosed. The system 100 comprises at least a transmitting antenna 110 that is configured to receive electric power from a power source as an input, convert the input electric power into electromagnetic energy, and radiate the electromagnetic energy into free space as a directional beam that is a collimated or substantially collimated beam. The rectifying antenna 130 is positioned or configured to be positioned at a distance from the transmitting antenna 110. The rectifying antenna 130 is configured to receive the directional beam and convert the electromagnetic energy into electricity. In certain embodiments, the system 100 utilise one or more phase correcting devices 120, 122 to maintain the directional beam as the collimated beam and to increase a range to which the directional beam is maintained as the collimated or substantially collimated beam.

A long-range wireless power transfer system 100 is disclosed. The system 100 comprises at least a transmitting antenna 110 that is configured to receive electric power from a power source as an input, convert the input electric power into electromagnetic energy, and radiate the electromagnetic energy into free space as a directional beam that is a collimated or substantially collimated beam. The rectifying antenna 130 is positioned or configured to be positioned at a distance from the transmitting antenna 110. The rectifying antenna 130 is configured to receive the directional beam and convert the electromagnetic energy into electricity. In certain embodiments, the system 100 utilise one or more phase correcting devices 120, 122 to maintain the directional beam as the collimated beam and to increase a range to which the directional beam is maintained as the collimated or substantially collimated beam.

An antenna configured for near field communication includes a first coil for transmitting and receiving signals having a first frequency and a second coil for transmitting and receiving signals having a second frequency greater than at least twice the first frequency. The first and second coils are magnetically coupled with a coupling coefficient greater than 0.5.

An antenna configured for near field communication includes a first coil for transmitting and receiving signals having a first frequency and a second coil for transmitting and receiving signals having a second frequency greater than at least twice the first frequency. The first and second coils are magnetically coupled with a coupling coefficient greater than 0.5.

Inductive wireless power transfer systems are provided for medical devices, such as implantable medical devices (IMDs). The systems may comprise a transmitter unit and a receiver unit and may be configured for transferring power and/or signals from the transmitter unit to the receiver unit and/or vice versa. The transmitter unit may comprise an energy source, a transmitter antenna, and a supply line connected in between the energy source and the antenna. The receiver unit may comprise a receiver antenna and a rectifier output. The transmitter antenna and the receiver antenna may be configured to provide a wireless power transfer link. The supply line may comprise a virtual resistance unit, which may be configured to provide a virtual resistance, which may be determined such that the rectifier output provides a substantially constant or less varying charge current over a predetermined distance range, for a large range of implant depths.

Inductive wireless power transfer systems are provided for medical devices, such as implantable medical devices (IMDs). The systems may comprise a transmitter unit and a receiver unit and may be configured for transferring power and/or signals from the transmitter unit to the receiver unit and/or vice versa. The transmitter unit may comprise an energy source, a transmitter antenna, and a supply line connected in between the energy source and the antenna. The receiver unit may comprise a receiver antenna and a rectifier output. The transmitter antenna and the receiver antenna may be configured to provide a wireless power transfer link. The supply line may comprise a virtual resistance unit, which may be configured to provide a virtual resistance, which may be determined such that the rectifier output provides a substantially constant or less varying charge current over a predetermined distance range, for a large range of implant depths.