A method and apparatus for providing power to e.g., a chargeable device via a radio frequency link. In one aspect, a method of providing power to a chargeable device via radio frequency link comprises generating a substantially un-modulated signal. The method further comprises radiating a substantially un-modulated radio frequency (RF) signal to the chargeable device via a transmit antenna based on the substantially un-modulated signal. The method further comprises powering or charging the chargeable device with power delivered by the substantially un-modulated RF signal.

Method and apparatus for delivering energy to an electrical or electronic device via a wireless link

A method and system for providing power to a chargeable device via radio frequency link are provided. In one aspect, a method of providing power to a chargeable device via radio frequency link comprises generating a substantially unmodulated signal. The method further comprises radiating a substantially unmodulated radio frequency (RP) signal to the chargeable device via a transmit antenna based on the substantially unmodulated signal. The method further comprises powering or charging the chargeable device with power delivered by the substantially unmodulated RF signal.

Method and system for powering an electronic device via a wireless link

Tuning and gain control as described for magnetic power systems, including different ways to change the characteristic of transmission and reception.

Tuning and Gain Control in Electro-Magnetic power systems

Wireless energy transfer system. Antennas are maintained at resonance with High Q. Techniques of maintaining the high-Q resonance matching are disclosed.

Wireless power apparatus and methods

Techniques for wireless power transmission. An antenna has a part that amplifies a flux to make the antenna have a larger effective size than its actual size.

Transmitters and receivers for wireless energy transfer

A RF transmitter has at least one amplifier having an input terminal for receiving a phase modulated signal to be transmitted on an RF carrier and an input node for receiving a modulation signal for amplitude modulating the RF carrier. The RF transmitter further includes an amplitude modulator having an output coupled to the input node of the power amplifier through a low-pass filter. The low-pass filter includes at least one variable filter component for varying a bandwidth of the low-pass filter. In a preferred embodiment an envelope elimination and restoration (EER) RF transmitter includes at least one power RF amplifier having the input terminal for receiving the phase modulated signal to be transmitted on the RF carrier, and further including an input power node for receiving a modulated voltage for amplitude modulating the RF `carrier. The EER RF transmitter further includes a class-S modulator having a variable bandwidth low-pass filter having an output coupled to the input power node and including at least one first variable capacitance.

Variable bandwidth envelope modulator for use with envelope elimination and restoration transmitter architecture and method

The invention relates to a matching circuit for adapting an amplifier to load impedance at various output power levels of the amplifier, and a method for adapting the amplifier to load impedance at various output power levels of the amplifier. The matching circuit comprises an LC circuit, i.e. an electric circuit switching consisting of at least one coil and at least one capacitor for tuning harmonic signals resulting from amplifier non-linearities. At least one capacitor of the LC circuit ( 600, 602, 604, 606 ) is an adjustable microelectromechanical (MEMS) capacitor ( 602, 606 ). The LC circuit comprises an interface for receiving control signals ( 220 ) adjusting capacitance of the microelectromechanical (MEMS) capacitor. The control signals ( 220 ) adjust the capacitance of the microelectromechanical (MEMS) capacitor ( 602, 606 ) such that the LC circuit ( 600, 602, 604, 606 ) resonates at the frequency of the harmonic signal to be tuned.

Matching circuit including a MEMS capacitor

A method for managing transmission conditions in a mobile telecommunication system according to movement of a mobile terminal is provided. The mobile terminal is having a communication link with a base station. The movement of the mobile terminal is monitored, and then a database is checked for the most optimal transmission conditions for the monitored movement of the mobile terminal, and action is taken to change the transmission conditions of the communication link upon detecting, in the database, transmission conditions providing a more optimal communication link for the current movement of the mobile terminal than the transmission conditions currently being used for the communication link.

Link adaptation in mobile telecommunication system

A mobile telephone including a hearing aid compatible system for coupling an output of the mobile telephone to a hearing aid device of a user; and a metal detector system adapted to detect a metal object brought into proximity relative to the mobile telephone.

Mobile telephone with metal sensor

The course of an oscillating signal is controlled in mutually alternative first active component (31) and second active component (32), both of which can be set into active state by a certain first value of a control signal brought to the component and which are in inactive state with a certain second value of the control signal. The signal is directed to pass through the first active component (31) by setting it into active state by a control signal (33) brought to it. At the same time, the second active component (32) is prevented from affecting the course of the signal by setting a control signal brought to it to a second value (107, 111).

Esko Jarvinen

Papers

Variable bandwidth envelope modulator for use with envelope elimination and restoration transmitter architecture and method

Matching circuit including a MEMS capacitor

Link adaptation in mobile telecommunication system

Mobile telephone with metal sensor

Bias voltage controlled parallel active components