136 results about "Wave resonance" patented technology

A power amplifier comprises a power amplification stage and an impedance transformation stage. The power amplification stage is connected with the impedance transformation stage in series. A differential cascade circuit structure is adopted in the power amplification stage, and the impedance transformation stage is formed by connecting a three-level parallel resonance network, a fundamental wave resonance network and an L-type impedance transformation network in series. The power amplifier has a linear configurable mode and a non-linear configurable mode, the working frequency range covers 0.1GHz to 1.5 GHz and optimization of linearity and efficiency can be realized through flexible configuration under different scenes.

A sensing method and apparatus using photonic band gap multilayered material. Photonic band gap multi-layers are formed from alternating layers of higher refractive index and lower refractive index materials, and may be deposited or disposed on a optically transparent substrate or a reflecting face of a prism. Light is directed into the prism, directed to the photonic band gap multilayer, and reflected out of the prism, where it is captured and analyzed. Various sensor configurations keep light wavelength or coupling angle fixed, while monitoring the change in the other parameter. Also disclosed is a microarray configuration with an array of probe spots placed on one surface of the multilayer, which is mounted on an x-y translation stage. Also disclosed is a configuration where a cylindrical lens focuses an expanded and collimated light beam to a line that transects the rows of array elements sequentially, producing an image with shifted surface electromagnetic wave modes for each row, corresponding to individual elements of the array row.

This invention relates to one non-contact radio frequency label without source and its read system, wherein the radio frequency label comprises radio frequency wave signal source, antenna match circuit and radio antenna; the radio signal source adopts space multi-mode resonance structure composed of space wave resonance chamber, sound couple layer, bottom electrode, pressure electric film, insulation layer and top electrode; the said read system comprises reader and reader antenna; the reader is in charge for radio label inquire signal emission and radar receive and transmission.

This invention discloses one lithium ion car emergency starting power which comprises one limit charging device composed of voltage protective circuit, integral filter wave resonance circuit, stable circuit and voltage and electrical control circuit with one charging plug and one battery set, wherein, the set has one positive and negative electrode columns with discharging protector; the said set has one plug and wire clamper with one pair of crab left and right parts through bolt; the clamper is located with torque adjusting device set with double speed conductivity wire.

Retractable antennas with quarter wave-quarter wave resonances for telephones, and which are particularly suitable for radiotelephones, include a retractable antenna with a top load element, a spatially separated rod element, and a cylindrical support conductor positioned therebetween. The cylindrical support conductor is structurally configured to receive a portion of the rod therein to add structural rigidity to the antenna and to define a coaxial capacitor between the rod and the conductor when the antenna is in the extended position.

Lower layer of metal film, organic polymer film, and upper layer of metal film of modulator are plated on up surface of substrate. Lower and upper films and polymer film constitute double-sided metal cladding waveguide structure. The upper layer film and polymer film constitute structure of attenuated total reflectance. The method includes steps: preparing modulator; using laser signal irradiates up surface of the upper layer film directly; when incident angle reaches mode-matching angle, guided wave resonance occurs so as to excitate guided wave traveled inside polymer film; drawing curve between reflected light intensity and varying angle; selecting mode-matching angle of producing guided wave resonance as working point of modulator; applying electric signal to lower and upper films to modulate incident laser signal; detecting reflected laser signal, and displaying the signal on oscilloscope. Features are: low voltage, cost, insertion loss and easy of integration.

The invention provides a device which comprises a solar photovoltaic generating unit, an electromagnetic wave resonance label detecting unit, a non-contact IC card unit, a wireless access public internet unit and an LCD TV advertisement broadcast network, wherein the solar photovoltaic generating unit supplies power; the electromagnetic wave resonance label detecting unit recognizes a shopping bag; the non-contact IC card unit records transaction information; the wireless access public internet unit transmits a command of a control center and transfers transaction data and the state data of a collector; the LCD TV advertisement broadcast network simultaneously broadcasts public service and commerce advertisements; and the electromagnetic wave resonance label detecting unit, the non-contact IC card unit and the wireless access public internet unit are spliced into a VMC or an industrial control board to form system work. The invention controls the white pollution from the source, reduces the energy consumption of the production of the shopping bag, improves the utilization rate of the shopping bag, can bring convenience to manufacturers and consumers, can propagandize public services in a community and promotes the construction of harmonious society.

The invention discloses a vector magnetic nozzle used for electric propulsion. The vector magnetic nozzle is composed of a permanent magnet arranged in front of a plasma flame-spraying nozzle and a plurality of non-concentric coils which are arranged at the back of the nozzle and form a dipole field. The permanent magnet and the non-concentric coils form a double-magnetic mirror tube so that plasmas can be in reciprocating motion in the double-magnetic mirror tube. The plasmas are heated in effect of ion cyclotron wave resonance under current modulation of the non-concentric coils. Proportion of current on the plurality of non-concentric coils when the plasmas are released from the magnetic nozzle is adjusted so that the vector direction of an external magnetic field of the plasma flame-spraying nozzle of a propeller deviates from the central axis of the propeller so as to guide the flow direction of external plasmas and further to change the thrust vector direction of the propeller. The vector magnetic nozzle can greatly reduce the quantity of the propellers of an attitude control system through vector propulsion, simultaneously greatly improves reliability of the attitude control system, enables vertical speed of the plasmas to be converted to parallel speed, improves parallel flow rate of external flow plasmas, and achieves the purpose of increasing thrust.

Spiral coils generate very powerful electromagnetic fields by operating with two different but simultaneous resonant behaviors. Quarter-wave resonance is established by adjusting the frequency (and wavelength) of a radiofrequency (RF) voltage source until the length of the spiral conductor is equal to ¼ of the wavelength of the alternating voltage. This generates an electromagnetic standing wave with at least one peak node and at least one null node. Inductive-capacitive (L/C) resonance is established by optimizing the thickness and width of the wire ribbon used to make the spiral coil. When inductance and capacitance are balanced, the current response will synchronize with the voltage input, creating in-phase behavior, minimal total impedance, and maximal power output. If two such coils are placed near each other, they will create an extremely powerful electromagnetic field between them, which can promote chemical and plasma reactions involving charged particles such as ions or plasma particles, possibly including nuclear fusion reactions.

The invention relates to an optical fiber surface plasma wave nucleic acid sensor and method for detecting polymorphism of nucleotide. The system includes wideband lamp house, P type Polaroid, gamma type optical fiber coupler, coupler interface, sensing optical fiber, detector of terminal reflective optical fiber surface plasma wave resonance biology sensor, spectrum device and computer. The invention uses terminal reflective optical fiber surface plasma wave nucleic sensor detector and distributed optical fiber surface plasma wave nucleic sensor detector to realize the detection of polymorphism of nucleotide. Compared with spectrum detection method, the accurate value of resonance spectrum wavelength of the surface plasma wave can be acquired. The invention needs not to be signed, and it has no damage to the sample.

A preparation method for a strong-adhesion-force carbon nanotube flexible transparent conductive thin film is characterized by carrying out pretreatment of nitric acid soaking, water washing and air drying in sequence on a polyethylene terephthalate (PET) base; and taking the PET which is subjected to the pretreatment as the base and spraying carbon nanotube solution to prepare the carbon nanotube flexible transparent conductive thin film FTCFs. The specific steps of spraying the carbon nanotube solution to prepare the carbon nanotube flexible transparent conductive thin film FTCFs are as follows: heating a heating plate placed with the PET to a pre-spraying temperature of 60-90 degrees; spraying at a low speed for 10-20 times; then, raising the temperature to 100-130 degrees; and spraying at a high speed for 30-50 times to prepare the FTCFs. With the preparation method, the adhesion force of SWCNTs on the PET can be effectively improved; an ultrasonic wave resonance method also provides an effective way for detecting the adhesion force of the FTCFs; and besides, the operation process is simple, no pollution is caused, the method is easy to realize, and the effect is obvious.

Embodiments of the invention provide a method for calculating material impedance inside and outside casing pipe, a method for determining a relationship between material impedance inside and outside casing pipe and Lamb wave attenuation, a method for determining a relationship between material impedance inside and outside casing pipe and resonance wave resonance efficiency, a method for evaluatingwell cementation quality, and a computer device. The method for calculating the material impedance inside and outside casing pipe includes: setting a Lamb wave measurement device and a resonance wavemeasurement device to point to a same position inside the casing pipe, to obtain a Lamb wave attenuation measurement value and a resonance wave resonance efficiency measurement value; and obtaining avalue of the material impedance inside and outside the casing pipe through calculation according to the Lamb wave attenuation measurement value and a predetermined first function relationship betweenthe material impedance inside and outside the casing pipe and the Lamb wave attenuation, and according to the resonance wave resonance efficiency measurement value and a predetermined second functionrelationship between the material impedance inside and outside the casing pipe and the resonance efficiency. The solution in the embodiments of the invention improves accuracy of inversion of the material impedance after the casing pipe, and can simultaneously calculate acoustic impedance of a fluid material in the casing pipe.

The embodiment of the invention provides an indium antimonide thin film terahertz metasurface and a thermal tuning method and preparation method thereof. The terahertz metasurface is arranged to be ofa three-layer structure comprising a rectangular substrate layer, a column array structure layer and an indium antimonide thin film so that the dielectric constant of the indium antimonide thin filmcan be changed along with temperature change, and the resonance frequency of the terahertz metasurface is changed. Therefore, the terahertz metasurface can change the resonance frequency by changing the temperature, and meanwhile, the tuning range of the terahertz wave resonance frequency is enlarged. The terahertz metasurface is simple in preparation method and suitable for being widely applied to the field of photoelectric manufacturing, so that the application range of the terahertz metasurface is widened.

The invention discloses a sensor based on a self-supporting grating structure. The sensor comprises a self-supporting dielectric grating, and a metal grating formed on the dielectric grating. The sensor is characterized in that the variation of refractive index of a sample to be detected is detected through a transmission absorption peak produced by the guided wave resonance caused by the metal grating and dielectric grating under the irradiation of a plane wave. The self-supporting grating structure of the sensor is manufactured by the nano processing technology. The variation of the refractive index of the sample to be detected can be detected through the transmission absorption peak produced by the guided wave resonance caused by the metal-dielectric grating under the vertical radiation of a light. The sensor with a periodic nano structure is small in size and easy to carry; the self-supporting grating structure is adopted, so that the manufacture process and the testing method are simple, and the sensitivity is high.

The invention provides a via anti-pad layout method, device, a PCB and a via anti-pad manufacturing device. The method comprises the step in which a layout device selects a corresponding PCB differential signal via anti-pad size when a quarter-wave resonance frequency of the PCB differential signal via is equal to a set frequency as the minimum PCB differential signal via anti-pad size. Accordingto the via anti-pad layout method, the device, the PCB and the via anti-pad manufacturing device, through the design of the differential signal via anti-pad, stub effects of the PCB differential signal via can be effectively solved, the PCB design and processing difficulty is reduced, the PCB processing cost is greatly reduced, and the PCB design and processing efficiency is improved.