176 results about "Multiple resonance" patented technology

A multiple resonances type ultrasonic transducer for a ranging measurement with high directionality using a parametric transmitting array in air, includes an ultrasonic actuator unit formed with a regularly mixing array of first unit actuators having a resonance frequency of f₁ and second unit actuators having a resonance frequency of f_2. The ultrasonic actuator unit generates a difference frequency wave (f_d=f₁−f₂) with high directionality by forming a parametric transmitting array in air through generating two ultrasonic waves with high pressure in air. Further, the transducer includes an ultrasonic sensor unit formed with one or more unit sensors having a resonance frequency of the difference frequency (f_d=f₁−f₂), for sensing a reflected ultrasonic pulse'signal from a target.

An antenna comprises a ground plate which is planar; a first power feed element which is disposed separately from the ground plate by a prescribed distance and which is formed in a prescribed shape; a first parasitic element which is planar and which is formed in a prescribed shape; a first shortcircuit part which electrically connects the first parasitic element and the ground plate; and a power feed part which is electrically connected with the first power feed element, wherein the first power feed element and the first parasitic element are disposed in parallel in part with each other, and the first power feed element and the first parasitic element have multiple resonances by electro magnetic coupling.

An organic light emitting device (OLED) having increased light output efficiency and a wide color gamut, and a color display apparatus employing the OLED, includes: a substrate; a reflective electrode formed on the substrate; an organic light emitting layer formed on the reflective electrode; a semi-transparent or transparent electrode formed on the organic light emitting layer; and an optical path control layer formed on the semi-transparent or transparent electrode and formed of a light transmitting material. In the OLED, resonators are formed between the reflective electrode and the semi-transparent or transparent electrode, between the reflective electrode and the top surface of the optical path control layer, and between the top surface of the semi-transparent or transparent electrode and the top surface of the optical path control layer, respectively, therefore, as an optical mode output to the exterior of the optical path control layer, at least two multiple resonances are generated.

Disclosed is a resonant device applied in vibration test. The device comprises an additive working table fixed on the surface of a vibration table or a bounce table. The main body of the additive working table is a rigid table, which top surface is the additive table for setting testing component; around the bottom of the table are equipped with mounting pads, the middle part of the table is hung in the air relative to the mounting pad plane; the natural first resonance frequency or multiple resonance frequency of the rigid table is greater than the natural resonance frequency of the vibration table or the bounce table. The invention has the advantages that it can improve the range of testing frequency by installing resonance device.

An antenna arrangement for radio communication in a first radio communication band and for communication in a second radio communication band including a multiple-resonance antenna element having a feed for connection to radio frequency circuitry; and a load connected to the feed and comprising a plurality of reactive components including a first reactive component that controls the impedance of the load for the first radio communication band and a second reactive component, separate from the first reactive component, that controls the impedance of the load for the second radio communication band wherein the plurality of reactive components of the load are configured to provide an impedance that changes between being inductive at a first frequency in the first radio communication band to being capacitive at a second frequency in the first radio communication band and that changes between being inductive at a third frequency in the second radio communication band to being capacitive at a fourth frequency in the second radio communication band.

The invention provides a multi-branch mobile terminal antenna. The mobile terminal antenna comprises a main antenna body and a passive antenna body, and is characterized in that the passive antenna body comprises two or more passive branches. The double-branch or multi-branch passive antenna body is introduced into the mobile terminal antenna, multiple resonance points are formed in the strong coupling, weak coupling and multi-branch manner, and the band width can be effectively expanded. Meanwhile, the invention further provides a mobile terminal adopting the multi-branch mobile terminal antenna; the mobile terminal has favorable band width expanding performance, and can be adaptive to the multi-band application requirement.

An antenna with multiple resonating conditions includes a grounding element electrically connected to a ground, a radiating element, a connection element electrically connected between the grounding element and the radiating element, a feed-in element electrically connected between the connection element and the grounding element for receiving feed-in signals, and a radiating-condition generating element electrically connected to the grounding element and extending from the grounding element to the radiating element.

In an antenna structure in which a base is mounted in a ground region on a circuit board, the base having formed thereon a driven radiating electrode and a parasitic radiating electrode, the parasitic radiating electrode causing multiple resonance at least in a harmonic resonant frequency band of the driven radiating electrode, capacitance loading means for loading a capacitance to a harmonic-mode zero voltage region of the driven radiating electrode is provided. The capacitance loading means is electrically connected to a ground electrode in the ground region on the circuit board via a grounding conduction path and switching means. By switching the switching means ON/OFF, capacitance loading by the capacitance loading means to the harmonic-mode zero voltage region of the driven radiating electrode is switched ON/OFF to switch a base resonant frequency in a base resonant frequency band of the driven radiating electrode.

The present invention aims to provide a slot antenna, an electronic apparatus, and a method for manufacturing a slot antenna which are capable of obtaining multiple resonances with a small mounting space. The slot antenna according to the present invention includes three conductor plates: a rectangular conductor plate 10 having a notch with an open end formed at one side of the conductor plate; a rectangular conductor plate 20 disposed to face the conductor plate 10; a third conductor plate connecting the conductor plates 10 and 20 on a side opposite to the open end of the conductor plate 10; and a feeder 40 connecting a core wire 41 and a ground 42 at two points across the notch of the conductor plate 10.

An electronic device including a multi-band antenna, a cover, a substrate, and a conductive border member is disclosed, where the device includes a first feed terminal connected to a circuit of a substrate embedded in the device, a second feed terminal connected to the circuit and insulated from the first feed terminal, a ground disposed on the substrate, a conductive border member continuously disposed along a periphery of the electronic device, a first antenna connected to the first feed terminal and the conductive border member, and the first antenna forming a multiple resonance for covering a first multi-band having a plurality of bands, a second antenna connected to the second feed terminal and the conductive border member and the second antenna forming a multiple resonance for covering a second multi-band, and a bypass conductor to bypass interference signals generated by the first antenna and the second antenna to the ground.

The invention discloses a multiple-resonance inhibition method for connecting multiple inverters into a weak grid in parallel. The method comprises the steps that capacitor voltage feedback quantities are introduced into current control ring forward channels of all the inverters and closed-loop links where the feedback quantities are located are set to be trap filter characteristics through control of active trap filters of capacitor voltage feedback of LCL filter circuits on the basis of the principle that in a parallel system of the multiple same-type current source inverters containing LCL filters, resonance peaks occur at the resonant frequencies of a transfer function of the parallel system, and therefore on the basis of active correction of the trap filters, the negative resonance peaks are achieved at the multiple resonant frequencies, and signals at the resonance points are shielded from the interiors of the inverters.

A multiple resonance antenna includes a dielectric substrate, a first antenna electrode and a second antenna electrode, the first and second antenna electrodes being disposed together on the dielectric substrate with first ends connected to each other but with second ends remaining free, the dielectric substrate including a high-dielectric part having a higher relative permittivity than another part, the high-dielectric part being disposed beneath a part of the first antenna electrode including the second end.

The invention discloses a proportional resonance control method used for a PWM converter and involving parameter optimization. According to the method, implementation steps of a proportional resonance controller in the PWM converter are generally designed, and a parameter optimization method for the proportional resonance controller including multiple resonance controllers is provided. The method can meet the control requirements of the PWM converter under the ideal power grid condition and is especially suitable for traversing operational control over the PWM converter under complex power grid working conditions such as the unbalanced power grid voltage condition and the low-level power harmonic wave including condition, and therefore the fault power grid operating capacity of equipment is improved. The parameter design/optimization method for the PR controller is simple, convenient to implement and feasible, engineering implementation is facilitated, and the method can be conveniently transferred to application occasions such as PWM rectifiers, grid-connected inverters, active power filters and double-fed wind power converters.

A mobile terminal device for receiving a dual band signal using a multiple resonance antenna in a mobile terminal is provided. The mobile terminal device includes a multiple resonance antenna, a first band filter connecting with the multiple resonance antenna, for filtering a first band signal of a low band received through the multiple resonance antenna, a second band filter connecting with the multiple resonance antenna, for filtering a second band signal of a high band received through the multiple resonance antenna, and a signal processor including a first signal processing unit for converting a frequency of the first band signal to generate a first baseband signal and a second signal processing unit for converting a frequency of the second band signal to generate a second baseband signal, and for activating a corresponding signal processing unit according to selection of a user.

The invention relates to combining power from multiple resonance magnetic receivers in a resonance magnetic power system. Various embodiments of a wirelessly powered local computing environment are described. A system and method for utilizing wireless near field magnetic resonance (NFMR) power transmission in a computing environment. A small form factor wireless power unit can be used to replace conventional batteries.

A dual resonance monopole antenna is described wherein the antenna structure, ground connection conductor and transmission line are integrated onto a single substrate. The substrate can be of a thin, flexible type that provides for positioning one or both resonant sections of the dual resonant monopole in the plane of or orthogonal to the ground plane of the host device to provide flexibility in selecting impedance and radiation characteristics. The ground connection conductor is configured to work in conjunction with features etched into the ground layer of the host device to form a method of altering the impedance properties of one or multiple resonances of the monopole.