Abstract: Described herein are improved configurations for a wireless power transfer involving photovoltaic panels. Described are methods and designs that use electric energy from a photovoltaic module to energize at least one wireless energy source to produce an oscillating magnetic field for wireless energy transfer. The source may be configured and tuned to present an impedance to a photovoltaic module wherein said impedance enables substantial extraction of energy from said photovoltaic module.

Abstract: A vehicle powering wireless receiver for use with a first electromagnetic resonator coupled to a power supply. The wireless receiver including a load configured to power the drive system of a vehicle using electrical power, a second electromagnetic resonator adapted to be housed upon the vehicle and configured to be coupled to the load, a safety system for to provide protection with respect to an object that may become hot during operation of the first electromagnetic resonator. The safety system including a detection subsystem configured to detect the presence of the object in substantial proximity to at least one of the resonators, and a notification subsystem operatively coupled to the detection subsystem and configured to provide an indication of the object, wherein the second resonator is configured to be wirelessly coupled to the first resonator to provide resonant, non-radiative wireless power to the second resonator from the first resonator.

Abstract: A method includes defining and storing one or more attributes of a source resonator and a device resonator forming a system, defining and storing the interaction between the source resonator and the device resonator, modeling the electromagnetic performance of the system to derive one or more modeled values and utilizing the derived one or more modeled values to design an impedance matching network.

Abstract: A method includes defining and storing one or more attributes of a source resonator and a device resonator forming a system, defining and storing the interaction between the source resonator and the device resonator, modeling the electromagnetic performance of the system to derive one or more modeled values and utilizing the derived one or more modeled values to design an impedance matching network.

Abstract: The disclosure features apparatus, methods, and systems for wireless power transfer that include a power source featuring at least one resonator, a power receiver featuring at least one resonator, a first detector featuring one or more loops of conductive material and configured to generate an electrical signal based on a magnetic field between the power source and the power receiver, a second detector featuring conductive material, and control electronics coupled to the first and second detectors, where during operation, the control electronics are configured to measure the electrical signal of the first detector and compare the measured electrical signal of the first detector to baseline electrical information for the first detector to determine information about whether debris is positioned between the power source and the power receiver.

Abstract: The disclosure features apparatus, methods, and systems for wireless power transfer that include a power source featuring at least one resonator, a power receiver featuring at least one resonator, a first detector featuring one or more loops of conductive material and configured to generate an electrical signal based on a magnetic field between the power source and the power receiver, a second detector featuring conductive material, and control electronics coupled to the first and second detectors, where during operation, the control electronics are configured to measure the electrical signal of the first detector and compare the measured electrical signal of the first detector to baseline electrical information for the first detector to determine information about whether debris is positioned between the power source and the power receiver.

Abstract: A method includes defining and storing one or more attributes of a source resonator and a device resonator forming a system, defining and storing the interaction between the source resonator and the device resonator, modeling the electromagnetic performance of the system to derive one or more modeled values and utilizing the derived one or more modeled values to design an impedance matching network.

Abstract: Described herein are systems, devices, and methods for a wireless energy transfer source that can support multiple wireless energy transfer techniques. A wireless energy source is configured to support wireless energy transfer techniques without requiring separate independent hardware for each technique. An amplifier is used to energize different energy transfer elements tuned for different frequencies. The impendence of each energy transfer element is configured such that only some of the energy transfer elements is active at a time. The different energy transfer elements and energy transfer techniques may be selectively activated using an amplifier without using active switches to select or activate different coils and/or resonators.

Abstract: Described herein are systems for wireless energy transfer distribution over a defined area. Energy may be distributed over the area via a plurality of repeater, source, and device resonators. The resonators within the area may be tunable and the distribution of energy or magnetic fields within the area may be configured depending on device position and power needs.

Abstract: A wireless energy transfer system includes a foreign object debris detection system. The system includes at least one wireless energy transfer source configured to generate an oscillating magnetic field. The foreign object debris may be detected by at least one field gradiometer positioned in the oscillating magnetic field. The voltage of the at least one field gradiometer may be measured using readout circuitry and a feedback loop based on the readings from the gradiometers may be used to control the parameters of the wireless energy source.

Abstract: A control architecture for electric vehicle wireless power transmission systems that may be segmented so that certain essential and/or standardized control circuits, programs, algorithms, and the like, are permanent to the system and so that other non-essential and/or augmentable control circuits, programs, algorithms, and the like, may be reconfigurable and/or customizable by a user of the system. The control architecture may be distributed to various components of the wireless power system so that a combination of local or low-level controls operating at relatively high-speed can protect critical functionality of the system while higher-level and relatively lower speed control loops can be used to control other local and system-wide functionality.

Abstract: Described is a system for wireless energy transfer for person worn peripherals. The system makes use of a technique referred to as strongly-coupled magnetic resonance to transfer energy across a distance without wires and enables efficient transfer of energy over distances of 10 to 18 cm or more. The system comprises a resonant power source, which could be embedded in a person's equipment vest or backpack receiving power from a central battery pack or micro fuel cell, and a resonant power capture unit which could be integrated with the helmet or hand held weapon, electronic device, and the like that may be carried or handled by a person.

Abstract: A vehicle powering wireless receiver for use with a first electromagnetic resonator coupled to a power supply. The wireless receiver including a load configured to power the drive system of a vehicle using electrical power, a second electromagnetic resonator adapted to be housed upon the vehicle and configured to be coupled to the load, a safety system for to provide protection with respect to an object that may become hot during operation of the first electromagnetic resonator. The safety system including a detection subsystem configured to detect the presence of the object in substantial proximity to at least one of the resonators, and a notification subsystem operatively coupled to the detection subsystem and configured to provide an indication of the object, wherein the second resonator is configured to be wirelessly coupled to the first resonator to provide resonant, non-radiative wireless power to the second resonator from the first resonator.

Abstract: Described herein are improved configurations for a wireless power transfer involving photovoltaic panels. Described are methods and designs that use electric energy from a photovoltaic module to energize at least one wireless energy source to produce an oscillating magnetic field for wireless energy transfer. The source may be configured and tuned to present an impedance to a photovoltaic module wherein said impedance enables substantial extraction of energy from said photovoltaic module.

Abstract: An avalanche photodiode detector is provided with a substrate including an array of avalanche photodiodes. An optical interface surface of the substrate is arranged for accepting external input radiation. There is provided at least one cross-talk blocking layer of material including apertures positioned to allow external input radiation to reach photodiodes and including material regions positioned for attenuating radiation in the substrate that is produced by photodiodes in the array. Alternatively at least one cross-talk blocking layer of material is disposed on the optical interface surface of the substrate to allow external input radiation to reach photodiodes and attenuate radiation in the substrate that is produced by photodiodes in the array. At least one cross-talk filter layer of material can be disposed in the substrate adjacent to the photodiode structures, including a material that absorbs radiation in the substrate that is produced by photodiodes in the array.

Abstract: A method for modulating a polarization-multiplexed optical clock signal for an optical communication system is described. The method includes splitting a linearly polarized input optical clock signal having a clock rate into a first and a second linearly polarized optical signal. The first linearly polarized optical signal comprises a first polarization state and the second linearly polarized optical signal comprises a second polarization state. The first linearly polarized optical signal is delayed relative to the second linearly polarized optical signal. The first and the second linearly polarized optical signals are combined to generate the polarization-multiplexed optical clock signal for the optical communication system. The polarization-multiplexed optical clock signal is then modulated with a polarization-insensitive optical modulator to encode data on the polarization-multiplexed optical clock signal.

Abstract: A method for generating a polarization-multiplexed optical clock signal for an optical communication system is described. The method includes splitting a polarized input optical clock signal having a clock rate into a first and a second polarized optical signal. The first polarized optical signal includes a first polarization state and the second polarized optical signal includes a second polarization state. The first polarized optical signal is delayed relative to the second polarized optical signal. The first and the second polarized optical signals are combined to generate the polarization-multiplexed optical clock signal for the optical communication system.

Abstract: A demultiplexer is described that includes an optical splitter that receives an optical data signal having a plurality of data channels and that generates a plurality of identical optical data signals. An electrical clock recovery circuit receives the optical data signal and generates an electrical clock signal that is synchronized to the optical data signal and that has a frequency that is an integer multiple of a bit rate of one of the plurality of data channels. One of a plurality of phase shifters receives the electrical clock signal and generates a phase-shifted electrical clock signal in response to a control signal applied to one of the plurality of phase shifters. A respective one of a plurality of sampling circuits receives one of the identical optical data signals and the phase-shifted electrical clock signal and generates an electrical signal representing a data channel of the optical data signal.

Abstract: A high-frequency diplexer is described. The high-frequency diplexer includes a coupler that receives a fundamental frequency signal and a harmonic frequency signal. The coupler generates a first signal and a second signal. The first signal is substantially ninety degrees-out-of-phase with the second signal. The high-frequency diplexer also includes a phase shifter. The phase shifter generates a relative phase offset between the first and the second signals thereby generating a first and a second phase shifted signal. The high-frequency diplexer also includes a combiner. The combiner receives the phase shifted first and second signals and generates a combined signal at an output of the combiner. The combined signal is a coherent combination of the fundamental frequency signal and the harmonic frequency signal.