50results about How to "Minimize transmission loss" patented technology

A system and method for user equipment (UE) measurement timing in a relay cell are provided. A method for controller operations includes broadcasting a first pattern of time intervals to communications devices served by a controller, and for a communication device served by the controller, determining a second pattern for the communications device, where the second pattern is based on the first pattern, and transmitting the second pattern to the communications device.

The invention is directed to an arrangement for generating intensive radiation based on a plasma, particularly short-wavelength radiation from soft x-ray radiation to extreme ultraviolet (EUV) radiation. The object of the invention is to find a novel possibility for generating radiation generated from plasma in which the individual pulse energy coupled into the plasma and, therefore, the usable radiation output are appreciably increased while retaining the advantages of mass-limited targets. According to the invention, this object is met in that the target generator has a multiple-channel nozzle with a plurality of separate orifices, wherein the orifices generate a plurality of target jets, the excitation radiation for generating plasma being directed simultaneously portion by portion to the target jets.

A geometrically shaped optical waveguide crossing with minimal transmission loss is described. A symmetrically tapered waveguide intersection is used to minimize loss in the intersecting region where at least two optical waveguides cross one another. The present invention embodies a waveguide crossing that includes tapering the width of the waveguides as they approach the intersecting region, forcing the field of light to contract, reducing asymmetric field distortions, and thus reducing transmission loss and effectively minimizig crosstalk. This is accomplished by focusing light through a perpendicular or near perpendicular intersection by simple linear tapering rather than by the use of a lens or other previously used devices.

The invention provides a surface-treated copper foil which can sufficiently ensure adhesive strength with a low-dielectric substrate used in forming a printed wiring board for high-frequency applications and can minimize transmission losses. There is provided a surface-treated copper foil for a low-dielectric substrate which is used in bonded relationship to a low-dielectric substrate, which is characterized in that a nodular-treated layer constituted by bump-like copper particles is formed on a surface of the copper foil and that ultrafine copper particles are caused to precipitate on the whole surface of the nodular-treated layer and adhere thereto and the roughness value Rz of the surface is 1.0 to 6.5 μm. The surface color of the surface-treated copper foil has L* of not more than 50, a* of not more than 20 and b* of not more than 15. A passivated layer containing at least one kind selected from the group consisting of zinc and nickel is provided on surfaces of the ultrafine copper particles which are caused to precipitate on the whole of the surfaces of the bump-like copper particles of the nodular-treated layer and adhere thereto.

A flat transmission wire is provided which includes a first insulating or dielectric film, a transmission layer formed on at least one surface of the first insulating or dielectric film so as to transmit electrical signals therethrough, a second insulating or dielectric film formed on one surface of the transmission layer, and a functional layer formed on one surface of the second insulating or dielectric film. Further provided are methods for fabricating flat transmission wires which enable the formation of uniform and fine transmission line patterns, and are environmental friendly, as compared to deposition-based methods.

A circuit board is provided in which a transmission loss is reduced. The circuit board includes a first layer; a transmission line disposed on the first layer; and a second layer stacked with the first layer. The second layer includes a first region, which is constructed of a first material, corresponding to a position of the transmission line, and a second region, which is constructed of a second material having a permittivity that is different from that of the first material, corresponding to the position of the transmission line.

The present disclosure provides a high-frequency circuit including a matching circuit capable of adjusting the input/output impedance of a high-frequency device to an optimal value, even if the high-frequency device includes a circuit element whose input/output impedance varies upon the variation in the operating frequency, and provides a transmission and reception circuit including the high-frequency circuit. The high-frequency circuit includes a first high-frequency device, a second high-frequency device electrically connected to the first high-frequency device, and a matching circuit connected between the first high-frequency device 1 and the second high-frequency device. At least one of the first high-frequency device 1 and the second high-frequency device includes a variable device and has a changeable operating frequency. The matching circuit includes at least one variable device capable of performing impedance matching in accordance with operating frequencies of the first high-frequency device and the second high-frequency device.

A quick connect fiber optic connector assembly for testing and communication that uses a modified ferrule having a reservoir formed into its tip for holding optic transmitting gel or oil. A cleaved optical fiber may be held concentrically within the ferrule for alignment with a receiver or optical device. The gel or oil in the reservoir alleviates the need for a perfect cleave of the fiber and allows for transmission of the optic signal. If necessary, the pressure foot of the connector assembly may be rotated to minimize transmission losses. When the transmission signal is optimized, the fiber may be tested or used for communications. In another embodiment of the invention, a connector assembly includes a removable cartridge housing optical coupling compound. As a bare fiber is passed into the connector it picks up a small quantity of coupling compound and is then interconnected to an optical patch cable.

A hollow-core fiber with a single layer of robust anti-resonant optical arches is disclosed, which is designed and made of infrared soft glass and allows the transmission of mid- to long-infrared wavelengths (1-15 microns). Each curved arch is solidly attached at two locations on the outer solid region surface and together the arches define the core diameter. The thickness and spacing between the arches are selected to minimize the fiber transmission loss <1 dB/m at wavelengths in the mid- to long-infrared where the infrared soft glass has high absorption >30 dB/m. A hollow-core preform with anti-resonant arches is made by extrusion of infrared soft glasses through a die specifically designed to produce the hollow-core fiber with anti-resonant arches.

The invention concerns a reflector and a satellite antenna system comprising such a reflector. In the satellite antenna system, microwave radiation from one or more feed horns (5) is emitted at the reflector (1), which comprises first and second reflector elements (2, 3). Upon reflection of the radiation from the reflector elements (2, 3), a distinct beam shape for the reflected microwave energy is generated. The reflector elements (2, 3) are disposed at a fixed distance from one another so that radiation that passes the first reflector element (2) strikes the second element. The first reflector element (2) comprises a lattice structure aimed toward feed horn, which lattice structure consists of plates (8) of electrically conductive material, wherein the distance between the plates and the depth of said plates are adapted for reflection of polarization parallel to the plates. The invention is characterized in that the extent of each respective plate toward the second reflector element is chosen so that the transmission losses in the first reflector element are minimized.

The present invention discloses an adapter connection structure, which comprises a first converter and a second converter. The first converter is connected to at least one input terminal to receive an input power and converts the input power into a transitional power. The second converter is connected to the first converter via a transit cable to transmit the transitional power, converts the transitional power into a DC output power and outputs the DC output power via a DC power cable. As the transitional power transmitted from the first converter to the second converter is in form of a high-voltage and high-frequency AC power or a high-voltage DC power, the power transmission loss in the transit cable is reduced. Therefore, the present invention not only can reduce transmission loss but also can adopt a less expensive cable. Thus is reduced the total cost of buying and using the adapter.