350 results about "Radiation loss" patented technology

We introduce a new Periodic micro coaxial transmission line (PMTL) that is capable of sustaining a TEM propagation mode up to THz band. The PMTL can be manufactured using the current photolithographic processes. This transmission line can be embedded in microscopic layers that allow many new applications. We use the PMTL to develop a wideband highly scalable connector that is then used in a Probe that can be used for connecting to microscopic scale Integrated Circuits with picoseconds High Speed Digital and near THz Analogue performance in various stages of development from R&D to production testing. These probes, in one embodiment, provide a thin pen-like vertical probe tip that matches the die pad pattern precisely that can be as agile as a high speed plotter pen, connecting on the fly to any die pattern on a wafer. This approach allows the most valuable part of the test, namely the wafer to remain stationary and safe, and the least costly part of the test, namely the probe to take most of the wear and tear. We further use the embedded PMTL to develop a modular, scaleable and fully automated Universal Test Fixture for testing chips in various stages of development mainly for digital IC chips that can be utilized in production lines with pick and place of chips on tape to test every chip before insertion into circuits. One embodiment includes a low profile wideband Signal Launcher and an alligator type RF Clip that can be used at the edge of PCB's directly for validation broads. The Signal Launcher is used to develop a new versatile Flush Top Test Fixtures for individual device testing in various stages of development from die, to packaged, to Module, to Circuit Boards. The PMTL can also provide Confined Field Interconnects (CFI) between various elements on semiconductor wafers to reduce parasitic and radiation losses and practically eliminating cross talk, thus, increasing the speed of digital IC's. The PMTL is also used to develop a Universal Test Socket, and a Hand Probe with performance up to 220 GHz.

An energy management system includes an equipment data management unit which manages charging / discharging loss of a battery and heat radiation loss of an electric water heater, and causes a control unit to perform control to give priority based on the comparison to the energy storage facility more reducing loss and store energy. The energy management system includes a system operation calculation unit which predicts voltage distribution of the next day of a distribution system or demand-and-supply balance amount of the entire system by state monitoring data of a power system, calculates a demand amount increasing target value necessary for avoiding a photovoltaic power generation amount suppression on a consumer end by the voltage distribution of the next day of the distribution system or the demand-and-supply balance amount, and controls the energy storage facilities so as to satisfy the demand amount increasing target value on the consumer end.

A capacitive structure and technique for allowing near-instantaneous charge transport and reliable, wide-band RF ground paths in integrated circuit devices such as integrated circuit dies, integrated circuit packages, printed circuit boards, and electronic circuit substrates is presented. Methods for introducing resistive loss, dielectric loss, magnetic loss, and / or radiation loss in a signal absorption ring implemented around a non-absorptive area of one or more conductive layers of an integrated circuit structure to dampen laterally flowing Electro-Magnetic (EM) waves between electrically adjacent conductive layers of the device are also presented.

The invention is a method and apparatus for the detection of terahertz radiation. In one embodiment, frequency modulated spectroscopy is performed on a swept source of coherent far infrared electromagnetic radiation that is focused on a target. A beam of radiation passes through a cell in which the target is housed, losing energy as certain frequencies are absorbed by contaminants in the target. A detector is positioned to determine how much energy is lost by the radiation (e.g., which frequencies fail to transmit through the cell), thereby indicating the presence of contaminants in the target.

A mmWave electronics package constructed from common Printed Circuit Board (PCB) technology and a metal cover. Assembly of the package uses standard pick and place technology and heat is dissipated directly to a pad on the package. Input / output of mmWave signal(s) is achieved through a rectangular waveguide. Mounting of the electronic package to an electrical printed circuit board (PCB) is performed using conventional reflow soldering processes and includes a waveguide I / O connected to an mmWave antenna. The electronic package provides for transmission of low frequency, dc and ground signals from the semiconductor chip inside the package to the PCB it is mounted on. An impedance matching scheme matches the chip to high frequency board transition by altering the ground plane within the chip. A ground plane on the high frequency board encircles the high frequency signal bump to confine the electromagnetic fields to the bump region reducing radiation loss.

A mmWave electronics package constructed from common Printed Circuit Board (PCB) technology and a metal cover. Assembly of the package uses standard pick and place technology and heat is dissipated directly to a pad on the package. Input / output of mmWave signal(s) is achieved through a rectangular waveguide. Mounting of the electronic package to an electrical printed circuit board (PCB) is performed using conventional reflow soldering processes and includes a waveguide I / O connected to an mmWave antenna. The electronic package provides for transmission of low frequency, dc and ground signals from the semiconductor chip inside the package to the PCB it is mounted on. An impedance matching scheme matches the chip to high frequency board transition by altering the ground plane within the chip. A ground plane on the high frequency board encircles the high frequency signal bump to confine the electromagnetic fields to the bump region reducing radiation loss.

An integrated photonic crystal (IPC) structure and method of producing the same in which the IPC structure includes a first layered sub-structure with a surface and a one-dimensional periodic refractive index variation along the direction perpendicular to the surface, and a second sub-structure with a plurality of essentially straight identical passages arranged in a two-dimensional periodic pattern cutting through the layered structure at an angle α. First and second defects in the first and second sub-structures, respectively, enable electromagnetic modes to be localized in the vicinity of the defects and allow photonic crystal waveguide to be constructed that can control and filter light very efficiently and minimize radiation losses.

The invention provides a stimulated radiation loss micro imaging system which comprises an exciting light laser, a first dichroscope, a fluorescent light activating and imaging unit, a loss photoexcitation light, a vector beam modulation unit and a control unit, wherein the fluorescent light activating and imaging unit comprises a second dichroscope, an XY vibrating mirror scanning part, a scanning lens, a cylinder mirror, an objective lens, a probe hole and a photomultiplier tube. The stimulated radiation loss micro imaging system provided by the invention adopts the vector beam modulation unit to modulate the incident loss light laser beam amplitude, a phase and a polarization state, the loss light wave amplitude, the phase and the polarization state of the pupil of an objective lens are utilized to form loss light focal spots, and meanwhile, the loss light focal spots are reshaped in a fine and complicated manner under the action of the multiple physical quantities, so that the generated loss light focal spots are exactly matched with the exciting light focal spot distribution, meanwhile, the diameter of a centre dark region of the loss light focal spots is minimal under the condition of a certain signal-to-noise ratio, and the stimulated radiation loss micro imaging system has high optical resolution.

The invention discloses a consecutive reaction apparatus for moisture sludge through anhydration and pyrolysis under microwave irradiation as well as a method thereof. The condensation comprises a sludge warehouse, a stirrer, a hopper feeder, a sludge-shaped controller, a belt sender, a power control microwave irradiation device, a microwave pyrolysis reaction chamber, a pressure sensing controller, a blower fan, a condensation heat exchanger, a scraper plate separator, an oil-water separating device, a liquid dredging groove, a coke storage tank, a product oil tank, a product gas tank, a nitrogen generator, a coke crusher, a sludge water pot and a gas shunting plate. According to the invention, microwave material internal heating characteristic can be fully used for reducing heat radiation loss, moisture sludge is directly performed with anhydration and pyrolysis to obtain the cracking oil, combustible gas and solid coke; heat recovery of the product gas and auxiliary microwave heating characteristic of the products residue are fully used for reducing the operation cost, and sludge pyrolysis efficiency and products quality can be increased. The apparatus has the advantages of simple structure, small volume, reasonable design and convenient market popularization, and is suitable for industrial application of microwave sludge continuous pyrolysis.

A portable radio terminal where the total length of a terminal body and an antenna is less than ½ wavelength. The terminal equipment includes a conductor connected to a printed circuit board in the terminal body so that an electrical equivalent length is ½ wavelength. The portable radio terminal equipment maintains a good radiation efficiency, while reducing the total size of a body and an antenna of the terminal equipment.

The invention relates to a sintered alumina-silica refractory material. The alumina-silica refractory material comprises aggregate, powder and additive; the aggregate comprises mullite or / and alumina and silicon carbide; the powder comprises mud or / and siliceous dust; and the additive comprises an organic bonding agent. The invention also provides a preparation method for the refractory material. The content of alumina in the refractory material is 30 to 60 percent; and the refractory material is low in price, high in high temperature resistance, erosion resistance, thermal shock resistance and wear resistance, and low in heat-conducting property and used for the cold ends of a decomposition band and a transition band of a rotary cement kiln, and can replace the conventional anti-stripping high-alumina brick and the conventional anti-stripping silicon mullite brick; and the requirements of the cement kiln on low heat conduction and alkali eclipse resistance of the refractory material can be met, the radiation loss can be reduced, and the service life of the kiln is prolonged, and the economic benefit of the kiln is improved.

An exemplary embodiment of the present invention provides an improved dielectric waveguide named electrical fiber. The electrical fiber with a metal cladding may isolate the interference of the signals in other wireless channels and adjacent electrical fibers, which typically causes band-limitation problem, for a smaller radiation loss and better signal guiding to lower the total transceiver power consumption as the transmit distance increases. Also, the electrical fiber may have frequency independent attenuation characteristics to enable high data rate transfer with little or even without any additional receiver-side compensation due to vertical coupling of the electrical fiber and an interconnection device.

A micro resonator sensor includes a main waveguide, a resonance waveguide and optical path changing means. Optical path changing means are installed at apex regions contacting with adjacent optical waveguides forming the resonance waveguide and reflect at least a part of the split optical signal inputted into the resonance waveguide to circulate the split optical signal inside the resonance waveguide. The micro resonator sensor can be manufactured without an excessive radiation loss and can be manufactured as an on-chip.

The system uses a color camera and an optical system to map two colors emitted from an object such as a furnace, boiler combustion zone, or burner flame into a temperature image. The color camera utilizes a color video chip with interspersed pixels for each color to reduce alignment issues and utilize the same optical path. In addition, the optical system utilizes a dual band pass optical filter thereby eliminating the number of optical elements and minimizing radiation loss through the optical system thereby improving the dynamic range of the system.

The invention discloses a cell stack. The cell stack comprises double-sided runner plates, cell substrates, an air dispersion cavity and a tail gas mixing burning cavity, wherein the upper surface and the lower surface of each double-sided runner plate are respectively provided with an air runner and a fuel gas runner, the cell substrates and the double-sided runner plates are alternately laminated, one cell substrate is arranged between two adjacent double-sided runner plates, the double-sided runner plates and the cell substrates are respectively provided with a fuel gas inlet penetrating through the double-sided runner plates and the cell substrates, the air dispersion cavity and the tail gas mixing burning cavity are respectively formed on two sides of the double-sided runner plates, the fuel gas runner extends from the fuel gas inlet to the tail gas mixing burning cavity, and the air runner extends from the air dispersion cavity to the tail gas mixing burning cavity. By adopting the cell stack, the structure is simplified, the natural gas inlet resistance is reduced, and the heat radiation loss of a pipeline can be reduced. The invention also discloses a solid oxide fuel cell power generating system with the cell stack.

The invention discloses a coaxial three-dimensional stimulated radiation loss super-resolution microscopic imaging method. The method comprises the following steps: 1) exciting light and loss light are subjected to beam combination, then modulated to linearly polarized light and adjusted to a line polarization direction; 2) a spatial light modulator is used for loading a 0-2 Pi vortex phase plateand a 0-Pi vortex phase plate to simultaneously perform twice modulation on the exciting light and the loss light; a part of the loss light is modulated to transverse hollow light spot, and the otherpart is modulated to axial hollow light spot; 3) the exciting light polarization is adjusted to circular polarization, and the direction of rotation is opposite to the direction of rotation of the vortex phase plate, and the loss light polarization is converted to the circular polarization, and the direction of rotation is same with the direction of rotation of the vortex phase plate; 4) the exciting light and the loss light are focused to a sample, the exciting light is the solid light spot, the loss light is the hollow light spot, and signal light emitted by a sample can be respectively excited and loosed; and 5) the signal light is collected to obtain the microscopic images corresponding to a scanning spot of the sample. The invention also discloses a coaxial three-dimensional stimulated radiation loss super-resolution microscopic imaging apparatus.

The invention discloses a method for quickly establishing a spherical antenna cover with a metal latticed shell structure and belongs to the crossing field of civil engineering metal latticed shell mechanics and electronic engineering. The method comprises the steps of firstly establishing a 32-face body and a variant of the 32-face body, selecting pentagonal synchronous rotation random element and establishing planer variation elements through pentagonal rotation angle control; adopting a geodesic projection method on the new planer variation elements to perform topological mapping transformation towards the external spherical surface of the variant of the 32-face body through the center of a variation element plane, a boundary center and a pentagonal center and performing random triangular spherical polyhedral main body establishment; finally giving spherical antenna cover whole topological structure design. The whole antenna cover is composed of shed face film plates and node base assembling members, the film plates with polyester film opening structures and the triangular metal frame structure design are combined with the antenna cover whole topological structure design, so that the metal antenna cover has good mechanical property and electromagnetic property and has very high wind and snow resisting capacity and a small radiation loss characteristic.

An impedance matching conductive via structure that is effectively constructed by selecting an outer conductor and an inner conductor diameter through analytical calculation or numerical simulation, such that impedance of the conductive via structure is matched to the impedance of the conductive signal traces of a printed circuit board. The conductive via structure comprises a conductive barrel that either connects to multiple ground planes or to multiple powers planes and serves as the outer conductor for a coaxial structure that provides a current return path and a matched impedance path of via transition, thus improving the signal transition and reducing signal reflection due to via discontinuity. Moreover, the conductive barrel of the conductive via structure also reduces radiation loss through a parallel plane structure and suppresses coupling between neighboring vias as the energy escaping through the conductive barrel and radiating to other vias is minimized.

The invention discloses a household up-draft biomass gasification device, which has an upright cylinder structure and is characterized in that the household up-draft biomass gasification device comprises a destructive distillation chamber arranged at the upper section thereof, a main gasification chamber arranged at the middle section thereof and an ash chamber arranged at the lower section thereof; all the sections are respectively separated by a heat storage grille and a heat storage grate; and the main gasification chamber is enclosed by a radiation cylinder on the periphery. The household up-draft biomass gasification device has no need of an external firing heat source, fast firing speed and high temperature of the gasification center, remarkably reduces tar content, reduces radiation loss of a furnace body, and has high gasification efficiency, long fire banking time of the gasification furnace, simple and compact structure, convenient operation and low operating cost.

The invention provides an array antenna Taylor-Schelkunoff polynomial design method, and relates to a modular array antenna. The method includes the steps that 1, array antenna parameters are selected; 2, the array antenna is divided into at least two modules; 3, a Taylor synthetic method is selected to calculate an array factor directional diagram of the modules; 4, an SPM synthetic method is selected to obtain a directional diagram with null steering, and the null steering angle is made to correspond to the grating lobe angle of the array factor directional diagram; 5, a directional diagram multiplication principle is adopted, the grating lobe of the array factor directional diagram is offset, the low-minor lobe radiation directional diagram is achieved, and the excitation amplitude of all arrays is controlled through the preset null steering angle; 6, if the obtained low-minor lobe radiation directional diagram cannot meet the design requirement, step 2 is executed, and the array antenna is regrouped. According to the array antenna Taylor-Schelkunoff polynomial design method, the excitation amplitude of all the arrays can be controlled through the preset null steering angle, a modular feed network is achieved through an equipower distributor with the phase and impedance being matched, the radiation loss is reduced, and the design and manufacturing cost is lowered.

It is provided an optical waveguide device in which the radius of curvature of a curved part of an optical waveguide can be lowered and the radiation loss of light in the curved part can be reduced. An optical waveguide device 2 has a ferroelectric optical waveguide substrate and an optical waveguide 5 formed in or on the substrate and modulating electrodes 4A, 4B and 4C. The thickness of the optical waveguide substrate is 30 μm or smaller at least in a region where the optical waveguide is formed. The optical waveguide has curved part having a radius of curvature of 30 mm or smaller.

The invention relates to a sintered alumina-silica refractory material. The sintered alumina-silica refractory material comprises aggregate, powder and additive; the aggregate comprises one or mixture of at least two of mullite, alumina and flint clay and silicon carbide; the powder comprises mud; and the additive comprises an organic bonding agent. The invention also provides the preparation method for the refractory material. The refractory material is low in price, and high in high temperature resistance, erosion resistance, thermal shock resistance and wear resistance and low in heat-conducting property and used for the cold ends of a decomposition band and a transition band of a rotary cement kiln, can replace the conventional anti-stripping high-alumina brick and the conventional anti-stripping silicon mullite brick; and the requirements of the cement kiln on low heat conduction and alkali eclipse resistance of the refractory material can be met, the radiation loss can be reduced, and the service life of the kiln is prolonged, and the economic benefit of the kiln is improved.

The invention discloses a reversed-U-type dielectric waveguide wideband directional coupler used for a millimeter wave circuit, which is composed of two medium waveguide transmission lines and an earthing metal plate, wherein two medium waveguide transmission lines close to each other are oppositely bent, arranged separately and symmetrically at two sides of an axle wire and fixed on the earthing metal plate, so as to form an X-type structure; the coupler is characterized in that the reversed-U-type medium waveguide is used for reaching of the wideband plat coupling of the coupling section and the transition section of a coupler, and the waveguide axes of the transition section adopts hyperbolic tangent line type; the fluctuation of a coupling coefficient doesn't exceed plus or minus 0.5Db inside the frequency coverage of 6GHz, and the flat coupling property can be achieved inside wider bandwidth. Compared with the traditionally directional coupler which is completely composed of a medium mirror image line, the inverted-U-type dielectric waveguide wideband directional coupler has the advantages that transition waveguide section of the hyperbolic tangent line type is used, the metal side wall of the prior coupler which is vertical to ground in the transition waveguide section is unnecessarily used, radiation loss and metal loss are reduced, the volume of the coupler is decreased and manufacture complexity and cost are reduced, and can be conveniently produced in large quantity.

The invention discloses an antenna structure and a design method thereof, wherein the antenna structure comprises a radiation unit and a feed network. An output end of the feed network is connected with an input end of the radiation unit. The feed network is of an axisymmetric structure. The feed network comprises one-to-multiple substrate integrated waveguide power divider and a phase shifter. The phase shifter is connected to multiple output ends of the substrate integrated waveguide power divider. The radiation unit is of a symmetric structure with the symmetric axis of the feed network serving as the center and is connected to the tail end of the phase shifter. The antenna structure overcomes the problems of a relatively large-scale microstrip feed network that the relatively large radiation loss and cross coupling exists in the millimeter wave frequency band, the antenna can also meet middle distance and long distance test requirements of a radar, switching time existing in other schemes is eliminated, the cost is low, and the size is small.

With the objective of providing a switching apparatus capable of reducing a geometrical size while a radiation loss is being suppressed, the switching apparatus that switches a state of an RF coil of an MRI between an effective state and an ineffective state, comprises a coaxial cable which has a length equal to ¼ of a wavelength corresponding to an operating frequency and in which an inner conductor and an outer conductor are connected to a coil body of the RF coil so as to interpose a capacitor therebetween, a diode connected to the inner conductor and outer conductor of the coaxial cable, and a capacitor corresponding to a lumped constant element connected to the inner conductor and outer conductor of the coaxial cable.

The invention discloses a solar receiver. The solar receiver comprises a heat absorbing pipe combination, wherein the heat absorbing pipe combination is spirally arranged to form a cavity; one end of the cavity is provided with an opening for receiving intensively incident sunlight; one end of the heat absorbing pipe combination is connected with a working fluid inlet pipe while the other end is connected with a working fluid outlet pipe, wherein a heat absorbing pipe consists of a plurality of pipelines with smaller diameters; and the pipelines are connected with the working fluid inlet pipe and the working fluid outlet pipe in a parallel connection way. Therefore, heat exchange efficiency can be improved by improving the flow rate of a working fluid in the pipelines; and blackbody radiation loss of a receiver is further reduced so that heat energy absorbing efficiency is improved.

The invention provides a combined antenna system and a mobile terminal, and the combined antenna system is used in cooperation with a metal back shell of the mobile terminal. The metal back shell comprises a base plate, a side plate and an end plate, wherein the side plate and the end plate are connected to the base plate. The combined antenna system comprises two stereo coupling antennas, each stereo coupling antenna comprises a first metal line which can generate low frequency resonance and a second metal line which can generate high frequency resonance, the stereo coupling antennas are connected with an RF feed source of the mobile terminal, and placed at included angles formed by the base plate, the side plate and the end plate, first, second and third gaps are formed among the base plate, the side plate and the end plate, and thus, simultaneous coupling feed of the stereo coupling antennas with the base plate, the side plate and the end plate is realized. The combined antenna system provided by the invention is suitable for the metal back shell, tuning in different frequency ranges is flexible and convenient via structure design, radiation loss of products is reduced, and requirements of different network standards for the mobile terminal in future can be met.

The invention discloses a lateral structure and arranging method of a steam turbine generator unit of a 1000MW-grade unit in a thermal power plant. A bunker bay is arranged between two boiler houses or between a boiler house and a steam turbine house; the longitudinal axis of the steam turbine generator unit is vertical to that of the steam turbine house, and the head of a steam turbine in the steam turbine house faces to the boiler house; and the central line of the steam turbine generator unit is aligned to the central line of a boiler. The invention has the advantages that: (a) the volume of a main power house is reduced; (b) the length of a steam-water pipeline is reduced, and particularly, the length of an expensive high-temperature and high-pressure steam pipeline in a steam pipeline system and the pressure reduction and heat radiation loss of the pipeline system are reduced; (c) no restriction of generator arrival time exists during field construction and the construction organization is simple; and (4) the tail of a generator of each unit is provided with an independent overhaul field.

The invention discloses a planar array microwave antenna for a dual-beam traffic information detection radar; the antenna is formed by connecting one group of 20 serial planar antenna units with another group of 20 serial planar antenna units in parallel, and a central side-feed form is used for feeding to an antenna array; the planar array microwave antenna for dual-beam traffic information detection radar has the advantages that a pair of antennas can produce two beam main lobes between which an included angle, namely the included angle between the beam main lobes of the dual-beam antenna is formed, and the included angle completely meets the demands of the dual-beam traffic information detection radar; the central side-feed form is more favorable for the integration of a radar transmitting-receiving assembly and the antenna; and furthermore, the wiring length of the radar transmitting-receiving assembly can be shortened to reduce the microwave radiation loss and reduce the radar cross section area.