Abstract: A triplate planar slot antenna formed by laying a ground plate, a lower layer side dielectric layer, a lower layer side copper-clad film substrate, an upper layer side dielectric layer, a slot plate and an upper layer side copper-clad film substrate sequentially from the bottom side, wherein a lower layer side copper foil piece is secured to the surface of a lower layer side insulating film by a joining technique not using adhesive, and an upper layer side copper foil piece is secured to the surface of an upper layer side insulating film by a joining technique not using adhesive. In a state where the copper foil pieces are removed, each insulating film has a dielectric constant in the range of 2.0-4.0, a tan ? in the range of 0.001-0.01, and a thickness of 25 ?m or less.

Abstract: A positive side terminal electrode and a negative side terminal electrode which are exposed to the exterior of a resin enclosure pass through a positive side opening and a negative side opening formed on the enclosure, respectively, and are connected to a positive side electrode and a negative side electrode, respectively, of an electric double-layer capacitor put away in the interior of the enclosure. The positive side terminal electrode is thermally welded to inner surfaces of the positive side opening over the entire periphery thereof, and the negative side terminal electrode is thermally welded to inner surfaces of the negative side opening over the entire periphery thereof.

Abstract: A voltage equalizer for battery elements for equalizing terminal voltages of a plurality of battery elements comprises an equalization processing circuit. The equalization processing circuit includes a transformer having basic windings. The basic windings comprise a plurality of primary windings corresponding to the plurality of battery elements and one or more secondary windings, a plurality of switching elements corresponding to the battery elements, a plurality of primary diodes corresponding to the battery elements, and one or more secondary diodes corresponding to the secondary windings. In the voltage equalizer, primary series circuits for carrying current from the battery elements via the corresponding primary diodes to the primary windings and secondary series circuits for carrying current from the secondary windings via the secondary diodes to the battery elements are formed.

Abstract: A triplate planar slot antenna formed by laying a ground plate, a lower layer side dielectric layer, a lower layer side copper-clad film substrate, an upper layer side dielectric layer, a slot plate and an upper layer side copper-clad film substrate sequentially from the bottom side, wherein a lower layer side copper foil piece is secured to the surface of a lower layer side insulating film by a joining technique not using adhesive, and an upper layer side copper foil piece is secured to the surface of an upper layer side insulating film by a joining technique not using adhesive. In a state where the copper foil pieces are removed, each insulating film has a dielectric constant in the range of 2.0-4.0, a tan ? in the range of 0.001-0.01, and a thickness of 25 ?m or less.

Abstract: An artificial stereophonic circuit which includes a monophonic signal input terminal, a signal output terminal of one of an L channel and an R channel which are connected to the signal input terminal, a phase-shifting circuit having an input side connected to the signal input terminal, and a signal output terminal of the other channel of the L channel and the R channel having an output side connected to the phase-shifting circuit. The phase-shifting circuit has an almost equal gain in a full frequency band of an input signal, and a phase shift for a change from 0 to 180 degrees according to an increase in a frequency of the input signal is carried out. The change of the phase can be minimized and a natural stereophonic effect can be realized. Moreover, only one capacitor is enough and only one pin for external attachment is enough for wholly forming an IC.

Abstract: A nitride semiconductor device enabiling to supress current collapse and manufacturing method thereof including a III-V group nitride semiconductor layer formed of III group elements includes at least one element from the group consisting of gallium, aluminum, boron and indium, and V group elements including at least nitrogen from the group consisting of nitrogen, phosphorous and arsenic, comprising a first nitride semiconductor layer made of said III-V group nitride semiconductor layer deposited on a substrate, a second nitride semiconductor layer comprising said III-V group nitride semiconductor layer and a control electrode making Schottky contact with the first nitride semiconductor layer being exposed through removing a portion of the second semiconductor layer.

Abstract: An electronic circuit is formed on a semiconductor substrate and electrode pads are formed, which are formed by disposing electrode terminals of the electronic circuit through interconnections on a surface of the semiconductor substrate. After grinding a back surface of the semiconductor substrate, a first resin layer is formed on the back surface of the semiconductor substrate. Thereafter, a barrier metal layer is formed on the electrode pad by an electroless plating technique, and a solder core is formed thereon. A second resin layer is formed by printing a resin, and after exposing the solder core by grinding the second resin layer, a solder bump is formed thereon. By this method, an extra process such as masking the semiconductor substrate and subsequent removing a mask can be omitted, while forming the barrier metal layer by the electroless plating technique.

Abstract: A nitride semiconductor device, which includes a III-V Group nitride semiconductor layer being composed of a III Group element consisting of at least one of a group containing of gallium, aluminum, boron and indium and V Group element consisting of at least nitrogen among a group consisting of nitrogen, phosphorus and arsenic, including a first nitride semiconductor layer including the III-V Group nitride semiconductor layer being deposited on a substrate, a second nitride semiconductor layer including the III-V Group nitride semiconductor layer being deposited on the first nitride semiconductor and not containing aluminum and a control electrode making Schottky contact with the second nitride semiconductor layer wherein the second nitride semiconductor layer includes a film whose film forming temperature is lower than the first nitride semiconductor layer.

Abstract: A filter including a body on which a waveguide groove, whose one surface is open, is formed in a U-shape and a plurarity of inductive resonant windows are provided along a longitudinal direction of the waveguide groove at a predetermined interval in the waveguide groove; and a cover being provided on a top surface of the body so as to cover the surface being open, wherein the plurality of inductive resonant windows are provided in such a manner that a cavity, which is enclosed by two of the plurality of inductive resonant windows being adjacent, the body and cover, resonates at a predetermined frequency and passes a electromagnetic wave in a predetermined frequency band and wherein one end of the U-shaped waveguide groove is an input terminal and other end is an output terminal, and the input terminal and output terminal are formed on a same surface.

Abstract: A positive side terminal electrode and a negative side terminal electrode which are exposed to the exterior of a resin enclosure pass through a positive side opening and a negative side opening formed on the enclosure, respectively, and are connected to a positive side electrode and a negative side electrode, respectively, of an electric double-layer capacitor put away in the interior of the enclosure. The positive side terminal electrode is thermally welded to inner surfaces of the positive side opening over the entire periphery thereof, and the negative side terminal electrode is thermally welded to inner surfaces of the negative side opening over the entire periphery thereof.

Abstract: The object of the invention is offering an external output video signal processor, which does not need coupling capacitor or clamping circuit. A system controller outputs a video signal by which the sync. tip level and the pedestal level were fixed to a predetermined value. It was considered as an external output video signal processor which carries out direct input of the video signal output to the video signal processing circuit from the system controller, and is characterized by providing a level shift circuit which adjusts the level and is sent to said latter part processing circuit.

Abstract: A manufacturing method for forming a region into which impurity ions are implanted, and an electrode is coupled to the region, in a self-aligned manner. An oxide film is formed on an n-type semiconductor layer composed of a silicon carbide semiconductor, and then the oxide film on regions in which source and drain regions are to be formed is removed by etching. Impurity ions are implanted into an exposed semiconductor layer and heat treatment is performed for activating the implanted impurity ions. A metal film to serve as ohmic electrodes is formed on the entire surface, and then the oxide film is removed by etching to thereby form a source electrode and a drain electrode. Leaving a part of the oxide film on regions on which source and drain electrodes are to be formed can prevent the oxide film from being deformed during the heat treatment for activation.

Abstract: A thin flat twisted-pair gap cable and gap navigator unit reduces the diameter of twisted-pair wire, aligns them side by side, and fuses and fixes them in place with two plies of tape so as to flatten the conventional round twisted-pair cable in order to pass the conventional round twisted-pair cable used for high-speed transmission through a gap in a window sash or the like. Two core wires each consisting of a small-diameter conductor covered with an insulating covering of PE or the like are twisted together evenly to make the twisted-pair wires, with the necessary number of twisted-pair wires aligned side by side. The insides of two plies of plastic tape are coated with a thermoplastic adhesive and the aforementioned cable is inserted into and sandwiched between the two plies of plastic tape and the tape fused together so that the twisted-pair wires aligned side by side come in the middle of the width of the tape to form a flattened gap cable.

Abstract: A pulse magnetron includes a cylindrical shell anode, a cathode provided at the center of the anode having a number of vanes mounted radially on an inner wall of the cylindrical anode shell, and a pair of pole pieces provided for applying a magnetic field to an interaction space where the outer side of the cathode is opposed to inner ends of the vanes. The anode and the cathode are arranged to satisfy at least either (i) increasing the radius of the inscribed circle defined by the inner ends of the vanes or (ii) decreasing the radius of the cathode surface as the magnetic flux density along the axial direction of the cathode at both ends of the inner end of the height of the vanes.

Abstract: A switch semiconductor integrated circuit having a switch FET for controlling passage of a high-frequency signal so that the switch FET is switched between on-operation and off-operation. The switch semiconductor integrated circuit includes a logic control section using of an inverter circuit which generates the switching signal in accordance with a control signal applied from outside. The inverter circuit uses a junction-type FET in which the gate of the switch FET is connected to an output end of the inverter circuit via a gate resistor, and the output end is connected to a coupling capacitor which couples a part of the high-frequency signal. The coupled high-frequency signal is rectified by an equivalent diode between the gate and drain of the junction-type FET, and is superposed onto a DC voltage applied to the gate of the switch FET.

Abstract: A thin flat twisted-pair gap cable and gap navigator unit reduces the diameter of twisted-pair wire, aligns them side by side, and fuses and fixes them in place with two plies of tape so as to flatten the conventional round twisted-pair cable in order to pass the conventional round twisted-pair cable used for high-speed transmission through a gap in a window sash or the like. Two core wires each consisting of a small-diameter conductor covered with an insulating covering of PE or the like are twisted together evenly to make the twisted-pair wires, with the necessary number of twisted-pair wires aligned side by side. The insides of two plies of plastic tape are coated with a thermoplastic adhesive and the aforementioned cable is inserted into and sandwiched between the two plies of plastic tape and the tape fused together so that the twisted-pair wires aligned side by side come in the middle of the width of the tape to form a flattened gap cable.

Abstract: The object to the present invention is to provide a magnetron which can reduce spurious oscillation such as the ??1 mode which presents a problem particularly in magnetrons and can reduce spurious radiations without placing filters. The magnetron of the present invention includes an anode 1 formed by plural vanes 12 in such a manner that inner ends 12 are radially extended toward the center of the anode shell 11 from the inner wall of a cylindrical anode shell, and a cathode 2 provided at the center of the anode 1. The magnetron of the present invention further includes a pair of pole pieces 4 provided in such a manner that a magnetic field can be applied on the interaction space 2 where the inner ends 12a of the vanes 12 and the cathode 2 face with each other.

Abstract: The present invention is a variable gain amplifier for amplifying a radio frequency signal by using a field effect transistor for signal amplification. The variable gain amplifier includes: an input impedance correcting means for correcting the input impedance when varying the gain at the input side of the field effect transistor for signal amplification; an output impedance correcting means for correcting the output impedance when varying the gain at the output side of the field effect transistor for signal amplification; and an amplifier bypass means for passing the radio frequency input signal to the output side by skipping the field effect transistor for signal amplification when varying the gain. According to the present invention, a variable gain amplifier is favorable in the voltage standing wave ratio (VSWR) at the input and output end regardless of presence or absence of gain variation, and the gain attenuation amount can be arbitrarily set.

Abstract: An engine for processing functions used in audio algorithms. The engine runs in parallel with a digital signal processor (DSP) in an audio chip to increase performance for that chip. Functions performed by the engine include biquad filtering and inverse discrete cosine transform (IDCT) including pre-multiplication, inverse Fast Fourier transform (IFFT), and post-multiplication, which would otherwise be performed by the DSP. The DSP is therefore free to perform other functions demanded by the chip. Resources in the engine are processed in a pipeline structure and are thus highly utilized. Data are stored in a predefined order to increase efficiency.

Abstract: A heat dissipating structure of a printed circuit board on which a circuit pattern is provided so that a heat generating part can be mounted, and which has a through hole formed at a site where the heat generating part is mounted from a surface on which the heat generating part is mounted to the opposite surface. A heat dissipating member made of a material with a thermal conductivity higher than a board of the printed circuit board, and having a shape worked so that the heat dissipating member can be inserted into the through hole is mounted in the through hole with an adhesive interposed therebetween. Heat generated from a heat generating part is transferred by way of a heat dissipating member to as far as a conductor of the GND surface or heat dissipating fins.