Abstract: An electromechanical switch, includes a substrate, a beam which is mounted on the substrate at both end parts thereof, a first driving electrode which is provided on the beam, a first signal transmitting electrode which is provided on the beam and is electrically separated from the first driving electrode, a second driving electrode which is provided on the substrate and pulls in the first driving electrode when the electric potential is applied between the first driving electrode and the second driving electrode, a second signal transmitting electrode which is provided on the substrate, and is brought into contact with the first signal transmitting electrode when the first driving electrode is pulled in the second driving electrode, the second signal transmitting electrode being electrically separated from the second driving electrode, and a fixed electrode which is formed so as to have electrostatic power with respect to the first driving electrode, and pulls in the first driving electrode so as to separate

Abstract: It is to provide an MEMS switch easy to manufacture, microscopic, and capable of obtaining a sufficient ON/OFF capacitance change ratio. An MEMS switch includes a substrate 46, a conductive beam 42 formed on a surface of the substrate, and three-layer structure beams B1 and B2 formed on the surface of the substrate and disposed to be opposed to the conductive beam.

Abstract: A switch comprises voltage applying means for providing direct current potentials to first to third beams arranged with a spacing slightly distant one from another, and electrodes for inputting/outputting signals to/from the beams. By controlling the direct current potential provided to the beam, an electrostatic force is caused to thereby change the beam positions and change a capacitance between the beams. By causing an electrostatic force between the first and second beams and moving the both beams, the first and second beams can be electrically coupled together at high speed. Also, an electrostatic force is caused on the third beam arranged facing to the first and second beams, to previously place it close to the first and second beams. When the electrostatic force is released from between the first and second beams, the second beam moves toward the third beam thereby releasing the first and second beams of an electric coupling.

Abstract: A small-size electromechanical filter that can be highly integrated and can be tuned is provided. An electromechanical filter includes a conductor acting as a signal line (movable electrode) 101, a magnetic field generating portion 102 for generating a magnetic field passing through the conductor, and a drive electrode 103 for changing the magnetic field passing through the signal line by displacing relative positions of the conductor and the magnetic field generating portion, whereby a tuning of a ferromagnetic resonance frequency, which is difficult to realize in the prior art, can be realized by changing the magnetic field passing through the signal line.

Abstract: The present invention is intended to provide a program management system for, upon activation of a program updating operation, automatically performing according to a mode selected by preparing plural kinds of program updating modes and previously selecting one of them. There is disclosed a program management apparatus adapted to perform a program updating operation of a program by downloading the program from a server which manages an information of the program to a predetermined terminal device, comprising: pattern setting means, which retains plural kinds of patterns each serving as a mode for giving an information inclusive of a program and updating such a program, for allowing a user to select one of the patterns so as to previously set it as a selected pattern; and program updating means for, upon activation of a program updating operation, automatically performing said program updating operation according to said selected pattern set by said pattern setting means.

Abstract: Resonators 4 and 5 are able to oscillate horizontally and vertically to substrate 1. Resonator 4 is primarily composed of a supporting portion in stationary contact with substrate 1, a movable portion including a contact surface making contact with resonator 5 and a contact surface making contact with electrode 7, and a crossing portion that couples the supporting portion and movable portion. Electrode 6 is disposed in the direction in which resonator 5 is spaced apart from resonator 4. Electrode 7 is disposed in the direction in which resonator 4 is spaced apart from resonator 5. Electrode 9 is disposed in a position that causes resonator 5 to generate electrostatic force in a direction different from the direction of both forces of attraction acting between resonators 4 and 5 and between resonator 5 and electrode 6.

Abstract: A switch that is capable of responding at a high rate at a lower DC potential while providing high isolation. In this switch, a microstructure group, having microstructures, is used. By slightly moving the microstructures a small amount the group, as a whole, achieves a large amount of movement. Also, by this configuration, it is possible to decrease a DC potential to apply to control electrodes of the microstructures. As a result, a high isolation switch capable of operating at a high rate at a lower DC potential is realized.

Abstract: There is provided a program management apparatus adapted to perform a program updating operation of a program by downloading the program from a server which manages an information of the program to a predetermined terminal device, including: a pattern setting unit, which retains plural kinds of patterns each serving as a mode for giving an information inclusive of a program and updating such a program, for allowing a user to select one of the patterns so as to previously set it as a selected pattern; and a program updating unit for, upon activation of a program updating operation, automatically performing the program updating operation according to the selected pattern set by the pattern setting unit.

Abstract: A compact high-performance mechanical vibration filter which deals with high frequency band signals. Microcolumn beams as minute mechanical vibrators are used to increase a mechanical resonance frequency. The plural microcolumn beams are arranged in an array and a common detection electrode surrounds each microcolumn beam with prescribed gaps between them, thereby preventing an output signal from becoming weak. When some of the mechanical vibrators are restrained from vibrating, it is possible to monitor and remove a noise component generated in the output signal by direct electromagnetic coupling of an input signal.

Abstract: Disclosed is a switch having a movable electrode to be separately driven downward and upward to secure signal transmission efficiency and insulation capability and operate for signal connection and disconnect at a high speed. The switch comprises a movable electrode, a fixed electrode positioned beneath the movable electrode, and a movable electrode driving fixed electrode positioned on both sides of the movable electrode with respect to a length wise direction thereof. Inside surfaces of the movable electrode, concave and convex parts are formed to arrange on both sides fixed electrodes having the corresponding concave and convex parts with a space.

Abstract: A switch comprises voltage applying means for providing direct current potentials to first to third beams arranged with a spacing slightly distant one from another, and electrodes for inputting/outputting signals to/from the beams. By controlling the direct current potential provided to the beam, an electrostatic force is caused to thereby change the beam positions and change a capacitance between the beams. By causing an electrostatic force between the first and second beams and moving the both beams, the first and second beams can be electrically coupled together at high speed. Also, an electrostatic force is caused on the third beam arranged facing to the first and second beams, to previously place it close to the first and second beams. When the electrostatic force is released from between the first and second beams, the second beam moves toward the third beam thereby releasing the first and second beams of an electric coupling.

Abstract: A switch comprises voltage applying means for providing direct current potentials to first to third beams arranged with a spacing slightly distant one from another, and electrodes for inputting/outputting signals to/from the beams. By controlling the direct current potential provided to the beam, an electrostatic force is caused to thereby change the beam positions and change a capacitance between the beams. By causing an electrostatic force between the first and second beams and moving the both beams, the first and second beams can be electrically coupled together at high speed. Also, an electrostatic force is caused on the third beam arranged facing to the first and second beams, to previously place it close to the first and second beams. When the electrostatic force is released from between the first and second beams, the second beam moves toward the third beam thereby releasing the first and second beams of an electric coupling.

Abstract: A switch for switching over a propagation path of external signal by contacting or non-contacting a movable member to or from an electrode. The switch comprises an input port for inputting an external signal, a movable member connected to the input port, a first electrode for propagating the external signal, a first control power supply connected to the first electrode and for generating a control signal, a second electrode for blocking the external signal, and a second control power supply connected to the second electrode and for generating a control signal. The first control power supply provides a control signal to the first electrode. The movable member is displaced by a driving force generated based on a potential difference between the movable member and first electrode and a potential difference between the movable member and second electrode, thereby being contacted to the first or second electrode.

Abstract: A switch for switching over a propagation path of external signal by contacting or non-contacting a movable member to or from an electrode. The switch comprises an input port for inputting an external signal, a movable member connected to the input port, a first electrode for propagating the external signal, a first control power supply connected to the first electrode and for generating a control signal, a second electrode for blocking the external signal, and a second control power supply connected to the second electrode and for generating a control signal. The first control power supply provides a control signal to the first electrode. The movable member is displaced by a driving force generated based on a potential difference between the movable member and first electrode and a potential difference between the movable member and second electrode, thereby being contacted to the first or second electrode.

Abstract: An electric signal fed into a line generates electric field in response to its frequency, and a resonator placed closely to the line and in a substantially vacuum condition not higher than 100 pascal is excited by electrostatic force of the electric field and vibrates. Detecting means converts mechanical vibrations of the resonator into a signal in another form than the electric signal, then it detects the vibrations. The foregoing structure allows the resonator to be a micro-body and to process properly a high-frequency input signal of MHz or GHz band. A tight space between an input side and an output side does not permit an electric signal fed into the line to couple directly to the output side, and the resonator downsized to a micro-body is not subject to viscosity of air.

Abstract: A switch that is capable of responding at a high rate at a lower DC potential while providing high isolation. In this switch, a microstructure group, having microstructures, is used. By slightly moving the microstructures a small amount the group, as a whole, achieves a large amount of movement. Also, by this configuration, it is possible to decrease a DC potential to apply to control electrodes of the microstructures. As a result, a high isolation switch capable of operating at a high rate at a lower DC potential is realized.

Abstract: A variable capacitor of the invention includes a beam having flexibility and an electrode provided close to the beam in order to form a capacitor with the beam. By applying a voltage to between the beam and the electrode to thereby deflect the beam by an electrostatic force, a capacitance between the both is changed. The deflected beam and the electrode are placed into contact through an insulation layer formed on a surface of at least one thereof, to change a contact area thereof, thereby changing the capacitance. Meanwhile, the electrode is divided in plurality. A recess is formed such that one electrode is lower than a height of another electrode surface. By applying a voltage to the beam and the electrode corresponding to the recess, the beam is pulled to an inside of the recess, thereby enabling to eliminate stiction.

Abstract: A variable capacitor of the invention includes a beam having flexibility and an electrode provided close to the beam in order to form a capacitor with the beam. By applying a voltage to between the beam and the electrode to thereby deflect the beam by an electrostatic force, a capacitance between the both is changed. The deflected beam and the electrode are placed into contact through an insulation layer formed on a surface of at least one thereof, to change a contact area thereof, thereby changing the capacitance. Meanwhile, the electrode is divided in plurality. A recess is formed such that one electrode is lower than a height of another electrode surface. By applying a voltage to the beam and the electrode corresponding to the recess, the beam is pulled to an inside of the recess, thereby enabling to eliminate stiction.

Abstract: Resonators 4 and 5 are able to oscillate horizontally and vertically to substrate 1. Resonator 4 is primarily composed of a supporting portion in stationary contact with substrate 1, a movable portion including a contact surface making contact with resonator 5 and a contact surface making contact with electrode 7, and a crossing portion that couples the supporting portion and movable portion. Electrode 6 is disposed in the direction in which resonator 5 is spaced apart from resonator 4. Electrode 7 is disposed in the direction in which resonator 4 is spaced apart from resonator 5. Electrode 9 is disposed in a position that causes resonator 5 to generate electrostatic force in a direction different from the direction of both forces of attraction acting between resonators 4 and 5 and between resonator 5 and electrode 6.

Abstract: A compact high-performance mechanical vibration filter which deals with high frequency band signals. Microcolumn beams as minute mechanical vibrators are used to increase a mechanical resonance frequency. The plural microcolumn beams are arranged in an array and a common detection electrode surrounds each microcolumn beam with prescribed gaps between them, thereby preventing an output signal from becoming weak. When some of the mechanical vibrators are restrained from vibrating, it is possible to monitor and remove a noise component generated in the output signal by direct electromagnetic coupling of an input signal.