Patent application number | Description | Published |
20080254756 | Receiver and Wireless Communication Apparatus - A receiver has a first voltage control oscillator configured to generate a first oscillation signal, a second voltage control oscillator configured to generate a second oscillation signal having a first phase, a first phase comparator configured to detect a phase difference between the first and second oscillation signals, a demodulator configured to perform demodulation processing of the received signal and to generate timing information of a second phase included in the first oscillation signal, a second phase comparator configured to detect the phase difference between the first and second oscillation signals, and a first control voltage generator configured to generate a first control voltage for controlling a phase and a frequency of the second voltage control oscillator based on the phase difference detected by the second phase comparator. | 10-16-2008 |
20090135541 | ACTUATOR AND ELECTRONIC CIRCUIT BASED THEREON - An actuator includes a substrate, a fixed electrode provided on a major surface of the substrate, a movable beam opposed to the major surface and held above the substrate with a gap thereto, and a dielectric film provided between the fixed electrode and the movable beam. The dielectric film is made of aluminum nitride oriented along c-axis with an orientation full width at half maximum of 4.6 degrees or less. | 05-28-2009 |
20090189487 | ACTUATOR AND ELECTRONIC HARDWARE USING THE SAME - An actuator includes a first beam, a first fixed part, a second beam, a first connective part, and a first fixed electrode. The first beam extends from a first fixed end to a first connective end, and the first fixed part connects the first fixed end and the substrate and supports the first beam above a main surface of the substrate with a gap. The second beam extends from a second connective end to a first action end and is provided in parallel to the first beam, and has a first division part divided by a first slit extending from the first action end toward the second connective end. The first connective part connects the first connective end and the second connective end and holds the second beam above the main surface of the substrate with a gap. The first fixed electrode is provided on the main surface of the substrate being configured to be opposed to a part of the first division part on a side of the first action end. | 07-30-2009 |
20090200471 | INFRARED-DETECTING ELEMENT AND INFRARED IMAGE SENSOR USING THE SAME - An infrared-detecting element includes: a substrate; a laminated body; an anchor coupling a part of the laminated body with the substrate and supporting the laminated body with a gap above the substrate; and an amplifier provided on the substrate and connected to at least one of the lower electrode and the upper electrode. The laminated body has a lower electrode, an upper electrode, and a piezoelectric film made of aluminum nitride which is provided between the lower electrode and the upper electrode and in which a c-axis is oriented almost perpendicularly to a film plane. The amplifier has a circuit performing conversion into voltage according to a charge generated in the laminated body. | 08-13-2009 |
20090206702 | ACTUATOR - An actuator includes: a substrate; a fixed electrode provided on a major surface of the substrate; a first dielectric film provided on the fixed electrode, and made of crystalline material; a movable beam opposed to the major surface, and held above the substrate with a gap thereto; a movable electrode; and a second dielectric film. The movable electrode is provided on a surface of the movable beam facing the fixed electrode, and has an alternate voltage applied between the fixed electrode and the movable electrode. The second dielectric film is provided on a surface of the movable beam facing the fixed electrode, and is made of crystalline material. | 08-20-2009 |
20090296308 | MEMS VARIABLE CAPACITOR - A MEMS variable capacitor includes: a first connection beam having one end fixed to a substrate; a first actuation beam connected to the first connection beam; a second actuation beam connected to the first actuation beam and extending in a reverse direction; a second connection beam having one end fixed to the substrate; a third actuation beam connected to the second connection beam; a fourth actuation beam connected to the third actuation beam and extending in a reverse direction; a movable electrode provided between the second and fourth actuation beams; and a fixed electrode provided on the substrate opposed to the movable electrode. The first to fourth actuation beams have a piezoelectric film sandwiched between a lower electrode and an upper electrode, the first and third actuation beams are placed on a line, the second and fourth actuation beams are placed on a line, and the first and second actuation beams and the third and fourth actuation beams are placed symmetrically about a line. | 12-03-2009 |
20090322183 | INERTIAL SENSOR AND INERTIAL DETECTING DEVICE - An inertial sensor includes a first beam, a first proof mass section and a first upper surface stopper section. The first beam extends in a first direction in a plane parallel to a major surface of a substrate and is held with a spacing from the major surface of the substrate. The first beam has a first detecting section including a first upper side electrode, a first lower side electrode, and a first upper side piezoelectric film provided between the first upper side electrode and the first lower side electrode. The first beam has one end connected to the major surface of the substrate. The first proof mass section is connected to the other end of the first beam and held with a spacing from the major surface of the substrate. The first upper surface stopper section is provided on the opposite side of the first proof mass section from the substrate with a spacing from the first proof mass section. | 12-31-2009 |
20100244628 | PIEZOELECTRIC-DRIVEN MEMS ELEMENT - A piezoelectric-driven MEMS element includes a substrate, a beam, a fixed portion, a fixed electrode portion and a power source. The beam is provided with a lower electrode film, a lower piezoelectric film, a middle electrode film, an upper piezoelectric film and an upper electrode film. The fixed portion fixes one end of the beam onto the substrate so as to hold the beam with a gap above the substrate. The fixed electrode portion has a capacitive gap between the fixed electrode portion and the other end of the beam. In addition, at least one or two of the lower electrode film, the middle electrode film and the upper electrode film is thicker than the rest thereof. | 09-30-2010 |