Abstract: A hybrid millimeter-wave Wilkinson divider comprises an input port (1), a first output port (2), a second output port (3), and transmission lines connecting the input port (1) to the first and second output ports (2, 3) implemented by transmission lines in a carrier substrate (PCB, 31). An isolation resistor of the Wilkinson divider connected between the first and second output ports (2, 3) is integrated in a monolithic micro-wave integrated circuit (MMIC) chip (40) installed on the carrier substrate. On the MMIC chip the isolation resistor is connected between RF input metal pads. A compensation circuit for parasitic capacitances caused by the RF input metal pads is provided on the MMIC chip (40) so that the on-chip resistor appears as a pure resistance to the output ports (2, 3) of the Wilkinson divider on the carrier substrate (PCB, 31).

Abstract: An optical assembly for realizing horizontal and vertical spot-size conversion to couple light from a thin waveguide to a thick waveguide is disclosed. The assembly comprises at least one first thin waveguide with a first section having a first optical mode field and a horizontal spot-size expansion section providing spot-size conversion for a first horizontal dimension of said first optical mode field of a light beam propagating in said first waveguide, and at least one second thick waveguide with a second section having a second optical mode field and a horizontal spot-size reduction section providing spot-size conversion for a second horizontal dimension of said second optical mode field of a light beam propagating in said second waveguide.

Abstract: According to an example aspect of the present invention, there is provided an apparatus for an antenna, comprising, a first power amplifier and a second power amplifier and a common ground between the first power amplifier and the second power amplifier, wherein a Radio Frequency, RF, output of the first power amplifier is coupled to the common ground and a RF output of the second power amplifier is coupled to the common ground.

Abstract: The invention relates to an apparatus and a method for enhancing dissolution of gas in liquid. The apparatus comprises an outer structure and at least one inner structure, at least one gas inlet for injecting gas to a gas space between the outer and inner structures, a wall of the inner structure having holes with the gas arranged to flow through the holes into the inner structure, at least one liquid inlet for feeding liquid into the inner structure to provide a swirl flow arranged to capture gas bubbles of the gas from an inner surface of the wall to form a liquid-gas mixture, and the inner structure designed such that volume of space inside the inner structure increases in the direction of the liquid flow, and at least one outlet for discharging the liquid-gas mixture out from the apparatus. Further, the invention relates to the use of the apparatus.

Abstract: A method and a process arrangement for producing hydrocarbons from plastic-based raw material by a gasification in an integrated process The integrated process includes a gasification unit for forming a gasification product, a steam cracking unit for forming a cracking product and a recovery unit for recovering hydrocarbons. The plastic-based raw material is gasified with steam in the gasification unit having at least one fluidized bed gasifier and the gasification product is formed, the gasification product is cooled at least partly for slowing and/or stopping the chemical reactions after the gasification, The gasification product is supplied to a quench tower of the gasification unit in which the gasification product is treated and condensable components are removed from the gasification product forming a treated gasification product, and the treated gasification product and the cracking product of the steam cracking unit are supplied to the recovery unit for separating and recovering hydrocarbons.

Abstract: A single-screw extruder and method are disclosed wherein the extruder includes a cylindrical rotor member arranged in a barre, and a drive system for rotation of the rotor member in the barrel. The extruder includes an outlet-provided with a die, having an outer ring arranged to the barrel, and an inner die part, the die establishing a flow channel that is continuously circular in all its cross-sections.

Abstract: According to an example aspect of the present invention, there is provided a method for foam assisted drying of nano- and microfibrillated cellulose, which is easily up-scalable and cost-efficient.

Abstract: A light source device includes a first light source to provide a first input light beam in the direction of a central axis of the light source device, a second light source to provide a second input light beam in the direction of the central axis, a central reflector, a catadioptric reflector to focus light of the first input light beam to the central reflector, and to focus light of the second input light beam to the central reflector, and at least one actuator to change the angular position of the central reflector, so as to cause the central reflector to form an output beam by sequentially reflecting light of the first input light beam and light of the second input light beam to the axial direction.

Abstract: According to an example aspect of the present invention, there is provided a method for producing an oxidised lignin based high performance surface active agent in techno-economically feasible manner within kraft pulp mill without interfering the main process.

Abstract: An arrangement for handling shared data memory access for a TCF-aware processor. The arrangement comprises at least a flexible latency handling unit (601) comprising local memory (602) and related control logic, said local memory being provided for storing shared data memory access related data.

Abstract: The invention relates to a method and an apparatus for heating a fluidizing agent for a fluidized bed reactor in which the fluidizing agent is fed to the fluidized bed reactor. The fluidizing agent is heated by heat of the process gas and/or heat of flue gas in at least one heat exchanger in which the heat of the process gas and/or the heat of the flue gas is utilized after the fluidized bed reactor, and the heated fluidizing agent is fed to the bottom of the fluidized bed reactor. Further, the invention relates to the use of the method.

Abstract: A light source device includes a first light source to provide a first input light beam in the direction of a central axis of the light source device, a second light source to provide a second input light beam in the direction of the central axis, a central reflector, a catadioptric reflector to focus light of the first input light beam to the central reflector, and to focus light of the second input light beam to the central reflector, and at least one actuator to change the angular position of the central reflector, so as to cause the central reflector to form an output beam by sequentially reflecting light of the first input light beam and light of the second input light beam to the axial direction.

Abstract: A method and apparatus for thermolysing organic material. The method comprises steps of: A) feeding the material in a single-screw extruder (100), the extruder comprising —a cylindrical rotor member (1) having diameter (D) and length (L) and comprising a feeding zone (14), —the rotor member (1) arranged in a barrel (2), —the cylindrical surface of the rotor member (1) carrying cavity/cavities and/or projection(s) (5) arranged in helically extending rows, —the helically extending row(s) of the rotor member (1) having a pitch (P) and depth (d) in the feeding zone (14) of the rotor member, wherein —the relation of the depth (d) to the diameter (D) of the rotor member, i.e. d:D, is not more than 1:20, and —the relation of the pitch (P) of the rotor member to the diameter (D) of the rotor member, i.e. P:D, is not more than 1:4, B) heating the material in the single-screw extruder (100) to a flowable state, and C) thermolysing the material.

Abstract: The invention concerns a polarization rotator, comprising a first waveguide layer containing at least a first waveguide, said first waveguide having an input end and an output end, a second waveguide layer having at least a second waveguide, said second waveguide having an input end and an output end, and at least a first vertical mirror element arranged at the end of at least one of said waveguides to couple light between the output end of the first waveguide and the input end of the second waveguide. The optical axis of said first or second waveguide which has the vertical mirror element at its end is rotated in its waveguide layer at a first angle in order to induce rotation of polarization of light coupled between said first and second waveguides with an amount that corresponds to said first angle.

Abstract: The invention concerns a polarization rotator. The inventive polarization rotator comprises an optical coupler comprising a waveguide having at one first end at least a first port configured as an input port for polarized light and a second port configured as an output port for reflected polarized light, said waveguide having a second end opposite to said first end. It further comprises a birefringent waveplate having on one side a reflective surface, which waveplate is arranged to receive light from said second end of said waveguide and to reflect light transmitted out from said coupler back into said coupler. According to the invention, the waveplate is further configured to cause said birefringent material to rotate the polarization of said reflected light, which amount of rotation depends on an angle of rotation of said birefringent waveplate with respect to said optical coupler.

Abstract: Acoustic wave devices are disclosed. The devices include a substrate, a bi-layer reflector and an acoustic wave resonator. The bi-electric reflector is above the substrate and includes a first layer that has a first acoustic impedance, and a second layer that has a second acoustic impedance lower than the first acoustic impedance. The first layer has a first surface that includes a floating region that provides a ceiling of a cavity. The second layer is on top of the floating region of the first layer. The acoustic wave resonator is on top of the second layer of the bi-layer reflector. The acoustic wave resonator includes a piezoelectric layer, an electrode and a counter-electrode such that application of a radio frequency voltage between the electrode and the counter-electrode creates acoustic resonance waves in the piezoelectric layer.

Abstract: According to an aspect, there is provided a structure comprising an absorbing layer for absorbing incident infrared radiation received via a receiving surface of the absorbing layer and a plurality of mushroom-shaped plasmonic elements for enhancing absorption of the incident infrared radiation into the absorbing layer. Said plurality of mushroom-shaped plasmonic elements have sub-wavelength dimensions and sub-wavelength spacings and are arranged along the receiving surface. Each of said plurality of mushroom-shaped plasmonic elements project out relative to the receiving surface.

Abstract: A visibility control device includes one or more light sources to provide input light, a waveguiding substrate, which has a first major surface and a second major surface, and a plurality of light-deflecting grooves implemented on at least one major surface of the substrate. The device is arranged to form guided light by coupling the input light into the substrate, The grooves are arranged to form deflected light by coupling the guided light out of the substrate through the second major surface of the substrate.

Abstract: A method and a process arrangement for treating a feed before a quench column in an integrated process, in which the integrated process comprises at least one gasifier for forming a gasifier flow, at least one cracking furnace for forming a cracker flow, at least one quench column for treating the feed comprising the gasifier flow and cracker flow and at least one transfer line to supply the feed to the quench column. The gasifier flow is cooled at least partly for killing chemical reactions after a gasification, the cracker flow is cooled at least partly after the cracking furnace, the gasifier flow is combined to the cracker flow before a transfer line valve of the transfer line to form the feed to the quench column, and temperature of the feed is controlled to a predetermined temperature of the transfer line before the quench column.

Abstract: The disclosure relates to a quantum detector configured to receive a microwave signal from a microwave source. The quantum detector comprises a main element formed by a main Josephson junction and a Josephson transmission line which is coupled to the main element for outputting a measurement signal. The Josephson transmission line comprises at least a first set of JTL elements and a second set of JTL elements. The capacitively shunted Josephson junction in each JTL element in the first set is weakly damped, and the JTL element in the second set are more strongly damped than the JTL elements in the first set.