摘要:
A semiconductor device includes a semiconductor substrate having a first main surface and a second main surface opposite the first main surface; a semiconductor chip amplifying a high frequency signal and including semiconductor cells on the first main surface, each semiconductor cell including semiconductor components and being connected to a gate pad and a drain pad, each semiconductor component having an electrode; internal matching circuits; a harmonic matching circuit for each semiconductor cell and connected between the semiconductor chip and one of the internal matching circuits, the harmonic matching circuit including a capacitor and an inductor; and a package enclosing the semiconductor substrate, the semiconductor chip, the internal matching circuits, and the harmonic matching circuit. In this structure, since harmonics are processed in each semiconductor cell, the phases of the harmonics processed in the semiconductor cells are uniform. Losses caused by the characteristic of harmonic signals themselves and a phase difference due to transmission line differences between the harmonic matching circuit and the semiconductor chip are reduced, improving harmonic load impedance.
摘要:
A spring is connected to an edge section of a sample side of a spindle receiving a force in the Z-axial direction by a first poise coil motor, and a probe is attached to the tip of the spring. The spindle is supported by an internal tube with a spring. The movement of the spindle is enlarged by the spring to be conveyed to the probe, whereby displacement of the probe is amplified. For this reason, a resonance frequency f0 of a system comprising the movable element of the first poise coil motor, spindle, spring, spring and probe can be increased. If the spring is changed to springs in two stages, a resonance frequency f0 of the system can be increased with comparatively compact configuration.
摘要:
In an exposure precision tester for a camera, including a flexible wiring board where a photometric sensor is implemented is contained in a case. The case has an appearance similar to that of a film cartridge loaded by drop-in operation and is insertable into a film cartridge cell of the camera. Exposure test can be performed without a back lid because the photometric sensor measures and outputs the exposure energy in the state that the photometric sensor is positioned at a film mask portion by rotating an operation part of a feed shaft with the case being inserted in the camera.
摘要:
A method of driving a liquid crystal that has a memory capability, wherein a reset voltage is initially applied to the liquid crystal during a reset period, to bring about a Freedericksz transition in the liquid crystal. During a subsequent selection period, a selection voltage that is selected on the basis of a critical value that brings about one of two metastable states in the liquid crystal is applied to the liquid crystal, and, during a non-selection period that follows the selection period, a non-selection voltage that is less than or equal to a threshold value that maintains two metastable states is applied to the liquid crystal. A delay period is provided between the reset period and the selection period, in order to gain effective timing for applying the selection voltage to the liquid crystal after the application of the reset voltage has been turned off. This shortens the length of the selection period, and hence the write time.
摘要翻译:一种驱动具有记忆能力的液晶的方法,其中在复位期间初始向液晶施加复位电压,从而在液晶中产生Fre + E,acu e + EE dericksz跃迁。 在随后的选择期间,基于在液晶中产生两个亚稳态之一的临界值选择的选择电压被施加到液晶,并且在选择之后的非选择期间 在液晶中施加小于或等于维持两个亚稳态的阈值的非选择电压。 在复位期间和选择期间之间设置延迟期间,以便在施加复位电压已经被关闭之后获得用于将选择电压施加到液晶的有效定时。 这缩短了选择周期的长度,从而缩短了写入时间。
摘要:
An echo removing apparatus for reducing the echo caused by sound generated turning from a speaker round to a microphone of a small-sized sound generated communication terminal, such as a portable telephone. A speaker output signal X(k), sent from a terminal 11 to a speaker 12, is sent to a smoothed power value calculation circuit 21 of a tap coefficient estimation circuit 21 where a smoothed input signal power value Px(k), which is a smoothed version of the square sum values, is found and sent to a tap coefficient updating circuit 22. Using the smoothed input signal power value Px(k), the tap coefficient updating circuit 22 updates tap coefficients of a filter 15. The filter 15 filters the speaker output signal X(k) to output a pseudo echo signal which is sent to a subtractor 14 where it is subtracted from a microphone input signal collected by a microphone 13. The filter tap coefficients may be prohibited form being fluctuated and echo removing characteristics of the echo removing apparatus may be stabilized without increasing the processing volume for tap coefficient estimation.
摘要:
The present invention is to provide a method for identifying an optical line easily and accurately regardless of the optical line length. A plurality of reflecting parts is placed on the optical line, and a combination of relative positions of the reflecting parts is changed for every optical line to form an identification code, and the relative positions of the reflecting parts are detected based on reflected lights when a detecting light is inputted to the optical line, so that the optical line is identified based on a result. Concretely, when the detecting light is inputted to one end of the optical line, the light is reflected at the plurality of the reflecting parts which form the identification code and comes back the input end. A combination of the relative positions etc. of the reflecting parts is changed for every optical line. To detect the relative positions of the reflecting parts which form the identification code, either the optical path difference of the reflected lights from the reflecting parts is measured or the time difference between the reflected lights come back from the reflecting parts is measured. Then, based on the result, the optical line can be identified.
摘要:
A process for manufacturing a transparent conductive film wiring board capable of being practiced according to a dry procedure to simplify the manufacturing and reduce the manufacturing costs. First, a SiO.sub.2 layer is provided on a substrate and then a black ITO film is formed on the SiO.sub.2 layer. The black ITO film is subject to processing using laser emitted from an output horn, resulting in being cut into a predetermined wiring pattern. Metal evaporated by laser processing is sucked by a vacuum suction head. Then, the substrate is subject to calcination to oxidize and crystallize the black ITO film 3 of the wiring pattern to form a transparent ITO film of the wiring pattern.
摘要:
A catalyst composition including component A and component B, the component A being a carrier, preferably having a honeycomb structure, and being a single-component oxide or a multi-component composite oxide of at least one metal of titanium, silicon and zirconium, and the component B being a catalyst component deposited on the carrier of component A and being at least one member selected from the group of noble metals and other specifically limited metals and their oxides, is very effective for decomposing and removing poisonous organic chlorine compounds, such as dioxin and the like, or poisonous organic chlorine compound-forming substances contained in an exhaust gas exhausted from an incinerator of an incineration plant provided with the incinerator and a dust collector. In addition, and the generation of the poisonous organic chlorine compound from the incineration plant can be prevented.
摘要:
In a hybrid microwave integrated circuit in which an FET and an LC resonance circuit are integrated, the LC resonance circuit includes an inductor and a capacitor disposed on a substrate having a smooth surface which ensures that the dimensional precision of the inductor will be in a range of.+-.several microns when it is formed on the substrate. Then, the substrate, on which the LC resonance circuit is formed, is mounted on or buried in a high frequency signal transmitting substrate. Therefore, variation in resonant frequency of the LC resonance circuit are reduced, whereby deteriorations in characteristics, such as efficiency, output power and the like, are reduced. In addition, since the LC resonance circuit is reduced in the size and cost of the whole circuit are reduced.
摘要:
An aqueous coating composition comprised of an aqueous resin obtained by neutralizing, with a volatile base, a copolymer comprised of(a) 5 to 65% by weight of hydroxyalkylacrylate or methacrylate in which the alkyl group has 1 to 5 carbon atoms,(b) 5 to 50% by weight of diacrylate or dimethacrylate of alkylene glycol or polyoxyalkylene glycol,(c) 2 to 20% by weight of .alpha.,.beta.-monoethylenically unsaturated carboxylic acid, and(d) 20 to 88% by weight of a vinyl monomer copolymerizable with the above components (a), (b) and (c), andan aqueous amine formaldehyde condensate; anda process for the production of the above aqueous coating composition which comprises copolymerizing the above components (a) to (d) in an organic solvent in the presence of a polymerization initiator to convert these components to a precrosslinked ungelled copolymer, neutralizing said copolymer by adding a volatile base to obtain an aqueous resin, then mixing an aqueous amineformaldehyde condensate with said aqueous resin and thereafter distilling off the organic solvent.