Abstract: Provided is a millimeter wavelength range transceiver device which can improve phase noise characteristics and which can also independently calibrate each respective local oscillator of a transmission unit and a reception unit. This millimeter wavelength range transceiver device comprises a transmission unit (10), a reception unit (20), and a reference frequency signal generator (30). The transmission unit (10) comprises a transmission-use local oscillator (11) comprising an injection-locked oscillator, a transmission-use mixer (12) for mixing the signal from the transmission-use local oscillator and a transmission baseband signal, and a transmission-use amplifier (13) for amplifying the signal from the transmission-use mixer to a transmission-use antenna (15).

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: An A-type converter circuit compares an input voltage with multiple threshold voltages, judges which segment it belongs to, and generates first and second voltages with the input voltage segment between them. The A-type converter circuit generates third and fourth voltages by amplifying the differences between the first and the input voltages and between the second and the input voltages. A B-type converter circuit divides the range between the third and fourth voltages into multiple segments, and judges which segment includes the common voltage. Subsequently, the B-type converter circuit generates fifth and sixth voltages with the common voltage segment between them. The B-type converter circuit generates a seventh (the next stage's third voltage) and an eighth voltage by amplifying the differences between the fifth and the common voltages and between the sixth and the common voltages.

Abstract: To provide a comparator and an A/D converter having the comparator. The comparator includes a differential amplifier circuit section and a differential latch circuit section. A first input voltage signal, a second input voltage signal and a clock signal are inputted to the differential amplifier circuit section. The differential amplifier circuit section operates base on the clock signal to output a first output voltage signal and a second output voltage signal which respectively correspond to the value the input voltage signal and the value of the reference voltage signal and are amplified. The differential latch circuit section operates based on the first and second output voltage signals to keep and output a comparison result between the first input voltage signal and the second input voltage signal.

Abstract: A method for manufacturing a liquid ejecting head that has a channel forming substrate and a reservoir forming substrate is provided. The method includes forming a vibration plate on the channel forming substrate, a piezoelectric element on the vibration plate removing portions of the vibration plate to form first and second opening portions, forming a lead electrode extending from the piezoelectric element including a first separate metal layer disposed over the first opening portion and a second separate layer disposed on the second opening portion, attaching a reservoir forming substrate to the channel forming substrate, forming a communicating portion in the channel forming substrate with a first positioning hole corresponding to the first opening portion and a second positioning hole corresponding to the second opening portion, and communicating the reservoir portion and the communicating portion by removing the separate metal layers.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: To provide a comparator and an A/D converter having the comparator. The comparator includes a differential amplifier circuit section and a differential latch circuit section. A first input voltage signal, a second input voltage signal and a clock signal are inputted to the differential amplifier circuit section. The differential amplifier circuit section operates base on the clock signal to output a first output voltage signal and a second output voltage signal which respectively correspond to the value the input voltage signal and the value of the reference voltage signal and are amplified. The differential latch circuit section operates based on the first and second output voltage signals to keep and output a comparison result between the first input voltage signal and the second input voltage signal.

Abstract: A plurality of pressure generating chambers being formed of a silicon substrate, in which a crystal face orientation of a surface is a (110) plane, and each pressure generating chambers communicating with nozzles in parallel. Piezoelectric elements are formed on one surface of the substrate with a vibration plate interposed therebetween and include a lower electrode film, a piezoelectric layer, and an upper electrode film. In each of the pressure generating chambers, an end surface is formed of a first (111) plane perpendicular to the (110) plane and an end surface in a longitudinal direction is formed of a second (111) plane inclined by a predetermined angle with respect to the first (111) plane.

Abstract: A liquid ejecting head includes: a flow passage forming substrate which is provided with a plurality of liquid passages each having a pressure generating chamber communicating with a nozzle opening for ejecting a liquid and a communication section communicating with the plurality of liquid passages; an elastic film which is formed on one surface of the flow passage forming substrate and has an opening in an area opposed to the communication section; a pressure generating unit which applies pressure to the inside of the pressure generating chambers; and a reservoir forming substrate which is adhered onto the surface of the flow passage forming substrate on a side of the pressure generating unit and is provided with a reservoir section communicating with the communication section to form a part of a reservoir.

Abstract: A piezoelectric motor includes: a piezoelectric actuator; and a driven portion. The piezoelectric actuator includes a piezoelectric element and a vibration member. The piezoelectric element has a piezoelectric layer and a first and a second electrode provided on both surfaces of the piezoelectric layer, respectively, and the vibration member is fixed on the first electrode side of the piezoelectric element. The driven portion which is rotated by the protrusion portion of the vibration member vibrated by the piezoelectric element, while the driven portion being abutted thereon. In the piezoelectric motor, a plurality of grooves which are open at a tip end surface of the protrusion portion and penetrate in a thickness direction are provided on a plurality of points of the protrusion portion along a rotation direction of a rotation shaft of the driven portion.

Abstract: A piezoelectric motor includes a piezoelectric element having a piezoelectric layer, and a first and a second electrodes, the first electrode provided on one surface side of the piezoelectric layer, and the second electrode provided on the other surface side of the piezoelectric layer; a piezoelectric actuator having a vibrating member anchored to the first electrode of the piezoelectric element; and a rotational shaft with which the vibrating member makes contact and is rotated thereby.

Abstract: A liquid ejection head including: a flow-channel forming substrate having a pressure generating chamber which communicates with a liquid supply channel which communicates with one end of the pressure generating chamber in terms of a first direction so as to have a first length for supplying liquid to the pressure generating chamber; and a pressure generating unit that causes the change in pressure in the pressure generating chamber, wherein the liquid supply channel is formed by narrowing the width of the pressure generating chamber in a second direction substantially perpendicular to the first direction so as to have a second length shorter than the first length, a stepped surface is formed between the side surface of the pressure generating chamber in the second direction and the side surface of the liquid supply channel in the second direction, and wherein a bridge is provided at a corner defined by the stepped surface, the side surface of the pressure generating chamber in the second direction on the step

Abstract: An A/D conversion device including a first A/D conversion section and a second A/D conversion section that each include a D/A converter that has a plurality of bit capacitors corresponding to bits of input data, a comparing section that compares a reference voltage with a difference voltage obtained by subtracting an analog input voltage from an output voltage of the D/A converter, and a control section that detects a data value of the input data at which the difference voltage is substantially the same as the reference voltage and outputs the data value as digital data according to the input voltage, and an adjusting section that serially connects the bit capacitors of the D/A converter of the first A/D conversion section and the bit capacitors of the D/A converter of the second A/D conversion section that correspond to the same bits, and adjusts a capacity of at least one of the bit capacitors so that a voltage between the two bit capacitors approaches a middle point of voltages of the two bit capacitors.

Abstract: An A/D conversion device including a first A/D conversion section and a second A/D conversion section that each include a D/A converter that has a plurality of bit capacitors corresponding to bits of input data, a comparing section that compares a reference voltage with a difference voltage obtained by subtracting an analog input voltage from an output voltage of the D/A converter, and a control section that detects a data value of the input data at which the difference voltage is substantially the same as the reference voltage and outputs the data value as digital data according to the input voltage, and an adjusting section that serially connects the bit capacitors of the D/A converter of the first A/D conversion section and the bit capacitors of the D/A converter of the second A/D conversion section that correspond to the same bits, and adjusts a capacity of at least one of the bit capacitors so that a voltage between the two bit capacitors approaches a middle point of voltages of the two bit capacitors.

Abstract: Provided is an AD conversion apparatus including a bit selecting section that sequentially selects conversion target bits of the output data, from an upper bit downward; a data control section that outputs comparison data determining a value of the conversion target bit, each time a conversion target bit is selected; a DA converting section that outputs an analog comparison signal corresponding to the comparison data; a timing generating section that outputs a comparison control signal ordering comparison initiation; a changing section that changes a timing of the comparison control signal according to a bit position of the conversion target bit, such that the timing of the comparison initiation indicated by the comparison control signal is later for higher conversion target bits; a comparing section that begins comparing the input signal to the comparison signal at the comparison initiation timing indicated by the comparison control signal having the timing changed by the changing section; and a completion d

Abstract: Provided is a successive approximation AD conversion apparatus that outputs digital output data corresponding to an analog input signal, including a bit selecting section that selects a conversion target bit sequentially from a highest bit of the output data; a data control section that outputs comparison data determining a value of the conversion target bit, each time a conversion target bit is selected; a DA conversing section that outputs an analog comparison signal corresponding to the comparison data; a comparing section that outputs a comparison result between the input signal and the comparison signal, upon the output of the comparison signal by the DA converting section, and that is reset after outputting the comparison result; a completion detecting section that, upon detecting that the comparing section has output the comparison result, outputs a completion signal causing the bit selecting section to select a next conversion target bit, prior to the comparing section being reset; and an output secti

Abstract: Provided is a liquid jet head, a method of manufacturing the same, and a liquid jet apparatus, in which liquid ejecting characteristics can be kept constant for a long period and in which nozzle blockage is prevented. In a liquid jet head including a passage-forming substrate (10) which is made of a single crystal silicon substrate and in which pressure generating chambers (12) communicating with nozzle orifices are formed, and pressure generating elements (300) for causing pressure changes in the pressure generating chambers (12), a protective film (100) which is made of tantalum oxide and has resistance to liquid, is provided at least on the inner wall surfaces of the pressure generating chambers (12).