493 results about "Energy coupling" patented technology

An acoustic touch sensing device, comprising a substrate, having a surface; and an acoustic wave transducer, transducing a bulk wave in said substrate propagating through said substrate along an axis intersecting said surface, wherein energy of said bulk wave is coupled to a wave having a converted wave mode with appreciable energy at said surface and propagating along said surface. The device may include a set of scattering centers to couple the bulk wave to a Rayleigh wave or plate wave. The Rayleigh wave or plate wave may be dispersed over a region of the substrate, and analyzed to detect a perturbation indicative of a position of touch.

An energy transferring system including a source-side resonator, an intermediate resonant module, and a device-side resonator is provided. The three resonators substantially have the same resonant frequency for generating resonance. The energy on the source-side resonator is coupled to the intermediate resonant module, such that non-radiative energy transfer is performed between the source-side resonator and the intermediate resonant module. The energy coupled to the intermediate resonant module is further coupled to the device-side resonator, such that non-radiative energy transfer is performed between the intermediate resonant module and the device-side resonator to achieve energy transfer between the source-side resonator and the device-side resonator. The coupling coefficient between the intermediate resonant module and its two adjacent resonators is larger than the coupling coefficient between the source-side resonator and the device-side resonator. The invention has the advantages of high transmission efficiency, small volume, low cost.

The present invention relates to a tunable resonating arrangement comprising a resonator apparatus (10), input / output coupling (4) means for coupling electromagnetic energy into / out of the resonator apparatus, and a tuning device (3) for application of a biasing voltage / electric field to the resonator apparatus. The resonator apparatus comprises a first resonator (1) and a second resonator (2). Said first resonator is non-tunable and said second resonator is tunable and comprises a ferroelectric substrate (21). Said first and second resonators are separated by a ground plane (13) which is common for said first and second resonators, and coupling means (5) are provided for providing coupling between said first and second resonators. For tuning of the resonator apparatus, the biasing voltage / electric field is applied to the second resonator (2).

An energy transferring system including a source-side resonator, an intermediate resonant module, and a device-side resonator is provided. The three resonators substantially have the same resonant frequency for generating resonance. The energy on the source-side resonator is coupled to the intermediate resonant module, such that non-radiative energy transfer is performed between the source-side resonator and the intermediate resonant module. The energy coupled to the intermediate resonant module is further coupled to the device-side resonator, such that non-radiative energy transfer is performed between the intermediate resonant module and the device-side resonator to achieve energy transfer between the source-side resonator and the device-side resonator. The coupling coefficient between the intermediate resonant module and its two adjacent resonators is larger than the coupling coefficient between the source-side resonator and the device-side resonator. The invention has the advantages of high transmission efficiency, small volume, low cost.

A method and system for providing an energy assisted magnetic recording (EAMR) disk drive are described. The EAMR disk drive includes a media, a slider having a trailing face and an air-bearing surface (ABS), at least one distributed feedback (DFB) layer and EAMR transducer(s) on the slider. The DFB laser(s) each includes a plurality of quantum wells, a laser coupling grating, at least one reflector, and a cavity in the at least one DFB laser. The DFB laser(s) for providing energy to the media. The EAMR transducer(s) includes at least one waveguide, a write pole, at least one coil for energizing the write pole, at least one grating, and may include a near-field transducer. The grating(s) include a coupling grating for coupling the energy from the at least one DFB laser to the waveguide(s). The waveguide(s) direct the energy from the at least one grating toward the ABS.

A method and optical system for coupling light from an incoming light wave (WI) into a waveguiding substrate (S) arranges the light wave (WI) to interact with a diffractive in-coupling grating element or elements (IG) arranged on or embedded within the substrate (S) and arranged to couple the energy from the light wave (WI) into a waveguided light wave (WG). The polarization state of the light wave (WI) is converted after its first interaction (D1) with the in-coupling grating element / elements (IG) and before a second interaction (D2) with the grating element / elements (IG) takes place. The method minimizes any “reverse” diffractions, which would direct light back towards the front-end optics and therefore to increase the width W of the in-coupling grating / gratings (IG). Preferred embodiments include diffractive beam expanders for virtual displays.

External power source, charger, system and method for an implantable medical device having therapeutic componentry and a secondary coil operatively coupled to the therapeutic componentry. A primary charging coil is capable of transcutaneously inductively energizing the secondary coil when externally placed in proximity of the secondary coil. Drive circuitry is operatively coupled to the primary charging coil for exciting the primary charging coil. A rechargeable power source is operatively coupled to the drive circuitry. A secondary recharging coil is operatively coupled to the rechargeable power source. A primary recharging coil is adapted to be coupled to a source of AC power which when placed in proximity of the secondary recharging coil can inductively energize the secondary recharging coil in order to charge the rechargeable power source.

The invention discloses a wireless energy transmission device which comprises a power source, a transmitting device and a receiving device; the transmitting device comprises a transmitting coil and an efficiency regulation transmitting network used for regulating the efficiency optimal equivalent transmission impedance Zeqt at the two ends of the transmitting coil to the optimal load impedance Zsof the power source; one end of the efficiency regulation transmitting network is connected with the transmitting coil, and the other end of the efficiency regulation transmitting network is connected with the power source; the receiving device comprises a receiving coil which performs energy coupling through an alternating electromagnetic field and the transmitting coil and an efficiency regulation receiving network used for regulating the received load impedance ZL to the efficiency optimal equivalent receiving impedance Zeqr at the two ends of the receiving coil; one end of the efficiency regulation receiving network is connected with the receiving coil, and the other end of the efficiency regulation receiving network is connected with the load. According to the transmission device disclosed by the invention, the transmission energy is not absorbed by the surrounding substances on the non-resonant frequency points, so that the transmission device has good transmission efficiency; moreover, the transmission device is applied to the power source with the load and output load in any sizes, and can keep the highest and optimal transmission efficiency at any distances.

A power system and method make highly efficient use of power supplied from a utility to a facility. A 110-volt line will commonly supply between 107 to 120 volts. A power system couples energy from the utility to a load circuit and may interface with further sources to supply the load circuit. The power system limits output voltage circuit to a preselected nominal level, e.g., 107 volts. Energy provided by the utility which is embodied in voltage above the nominal level is diverted to a charging circuit to charge a storage circuit. On command, the storage circuit delivers input power coupled to a waveform generator which produces a mirror of the waveform of the utility voltage as a supplemental AC voltage. The supplemental voltage is provided to the facility circuit either in response to a user-generated control signal, an output level from the storage circuit or in response to load requirements.

An inductively coupled plasma source is provided with a peripheral ionization source for producing a high-density plasma in a vacuum chamber for semiconductor wafer coating or etching. The source includes a segmented configuration having high and low radiation segments and produces a generally ring-shaped array of energy concentrations in the plasma around the periphery of the chamber. Energy is coupled from a segmented low inductance antenna through a dielectric window or array of windows and through a segmented shield or baffle. The antenna has concentrated conductor segments through which current flows in one or more small cross-section conductors to produce high magnetic fields that couple through the high-transparency shield segments into the chamber, while alternating distributed conductor segments, formed of large cross-section conductor portions or diverging small conductor sections, permit magnetic fields to pass through or between the conductors and deliver only weak fields, which are aligned with opaque shield sections and couple insignificant energy to the plasma. The source provides spatial control of plasma energy distribution, which aids in control of the uniformity of plasma processing across the surface of the semiconductor being processed.

A data recording head having at least two waveguides that are energy-coupled. The first waveguide is end fire coupled to a radiant energy source of a first spot size, and the second waveguide outputs radiant energy of a second spot size onto a recording medium. The width of the first waveguide is larger than the width of the second waveguide, or the first spot size is larger than the second spot size. The recording also includes a cladding layer and / or a diffraction grating for mode index matching between the first and second waveguides. The second waveguide includes a solid immersion optical element to focus the output radiant energy. In one embodiment, the data recording head includes a write element to effect magnetic data recording, and the first and second waveguides are configured relative to the write element and supported relative to the recording medium to effect heat assisted magnetic recording.

Electrotherapeutic implant for stimulation of body tissue, comprising at least two electrode poles (14) which are connected to electric feeder lines, a demodulation unit (22), at least one electric feeder line (20), which is designed as an antenna and contacts the demodulation unit (22), wherein the implant (10) is fabricated from one piece, has means (16) for affixing same at the treatment site and is equipped with a biocompatible insulation, whereby the components of the implant (10) are designed so that a therapeutic energy which can be injected from the outside over the antenna (20) during the treatment is delivered to the therapeutic target region without intermediate storage.

According to a first aspect, a power supply and a method of providing power for igniting a plasma in a reactive gas generator is provided that includes (i) coupling a series resonant circuit that comprises a resonant inductor and a resonant capacitor between a switching power source and a transformer, the transformer having a transformer primary and a plasma secondary; (ii) providing a substantially resonant AC voltage from the resonant capacitor across the transformer primary, thereby inducing a substantially resonant current within the transformer primary to generate the plasma secondary; and (iii) upon generation of the plasma secondary, the resonant inductor limiting current flowing to the switching power supply. According to another aspect, bipolar high voltage ignition electrodes can be used in conjunction with inductive energy coupling to aid in plasma ignition.

A monopole-type antenna for multi- or wide-band use to transmit or receive radio frequency electromagnetic energy. A feed point, provides energy into the antenna or receives energy from the antenna. A driven radiating section includes a first top-loading element and a feed conductor that electrically connects the feed point linearly to the first top-loading element, yet with the driven radiating section not electrically connected to a grounding surface. A parasitic radiating section includes a second top-loading element and a bridge conductor that electrically connects the second top-loading element linearly to the grounding surface. When energy is then provided at the feed point and conducted to the driven radiating section, it produces a first resonance mode, coupling at least some of the energy into and exciting the parasitic radiating section to produce a second resonance mode.

An antenna suitable for use as a phased array antenna of a radar system. The antenna includes a plurality of radiating elements, and a substrate integrated waveguide (SIW) configured to form a feed network to couple energy from a plurality of inputs to the radiating elements. The feed network includes over-moded waveguide couplers configured so energy propagates through an over-moded section in multiple modes, TE10 and TE20 modes for example. The feed network also defines sub-arrays configured such that half of the radiators of a sub-group are shared with an adjacent sub-group of an adjacent sub-array, i.e. the sub-arrays are configured to have 50% overlap. Preferably, the feed-network is formed about a single layer of substrate material.

A tri-mode co-boresighted seeker including a primary collecting mirror assembly having a parabolic surface and a forwardly located dielectric secondary mirror assembly including a dielectric mirror coating which reflects infrared (IR) energy to an IR detector assembly located on a central longitudinal axis on one side of the secondary mirror while providing substantially unobstructed propagation of millimeter wave RF energy and laser energy in a joint or common signal path therethrough to means located on the other side of the secondary mirror for extracting and diverting laser energy away from the common RF-optical signal path to a laser sensor assembly while causing little or no disturbance to the RF signal as it propagates to a co-located bifurcated waveguide assembly which couples the RF energy to an RF sensor means located behind the primary mirror.