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7626314 |
Surface acoustic wave device
A surface acoustic wave device which uses a Rayleigh wave as a surface acoustic wave includes an IDT electrode provided on a piezoelectric substrate composed of quartz having Euler angles of...
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7623009 |
Boundary acoustic wave filter device
A boundary acoustic wave filter device capable of increasing an out-of-band attenuation includes a dielectric film formed on a piezoelectric substrate, at least one longitudinally coupled resonator...
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7615910 |
High frequency surface acoustic wave device
The present invention relates to a high frequency surface acoustic wave device, which may be manufactured by the same manufacturing equipment, and with the same material, as those required for...
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7602099 |
Surface acoustic wave device and method of manufacturing the same
First base layers made of TiN or TiO x N y (where, 0<x<0.2, x+y=1) and second base layers made of Cr are provided between interdigital transducer portions and a piezoelectric substrate, and...
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7581306 |
Method for producing a boundary acoustic wave device
In a method for producing a boundary acoustic wave device that includes a first medium, a second medium, and a third medium laminated in that order, and electrodes disposed at the interface between...
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7569972 |
Surface acoustic wave device
A surface acoustic wave device utilizing a Rayleigh wave includes a LiNbO 3 substrate having Euler angles of (0°±5°, θ±5°, 0°±10°), an electrode which is disposed on the LiNbO 3 ...
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7554427 |
Thin film bulk acoustic wave resonator and filter, and radio frequency module using them
A thin film bulk acoustic wave (BAW) resonator structure and filter which can be fabricated by inexpensive manufacturing techniques and in smaller size than conventional such products are to be...
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7538636 |
Electronic part with a comb electrode and protective film and electronic equipment including same
An electronic part, object of which is to improve temperature characteristics and electrical properties, includes a substrate ( 1 ), a comb-type electrode ( 2 ) that is disposed on the upper...
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7535152 |
Lamb wave device
A Lamb wave device includes a base substrate, a piezoelectric thin film which is provided on the base substrate and which has a floating portion floating above the base substrate, the floating...
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7522894 |
Radio receiving apparatus
A radio receiving apparatus includes two receiving antennas, two upstream RF amplifiers, a SAW filter having two input IDTs and an output IDT, a downstream RF amplifier, and a detector circuit. The...
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7518457 |
Microwave generator using a diamond SAW oscillator
A microwave generator comprises: a high-frequency power section that includes a diamond SAW oscillator and outputs a high-frequency signal outputted from the diamond SAW oscillator to a subsequent...
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7479854 |
Balanced-type surface acoustic wave filter
In a balanced-type surface acoustic wave filter, a first longitudinally coupled resonator surface acoustic wave filter unit connected to an unbalanced signal terminal is connected in a cascade...
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7477117 |
Saw filter with improved selection or insulation
A surface acoustic wave (SAW) filter includes a piezoelectric substrate, and acoustic tracks on the piezoelectric substrate. The acoustic tracks are adjacent and electrically interconnected. The...
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7474033 |
Surface acoustic wave device, method of manufacturing the same, and electronic apparatus
A surface acoustic wave device, comprising a lithium-tantalate substrate and an IDT electrode that excites a pseudo-longitudinal wave type leaky surface acoustic wave in the surface of the...
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7471171 |
Elastic boundary wave device, resonator, and filter
An elastic boundary wave device includes a LiNbO 3 substrate, an electrode exciting an elastic wave and provided on the substrate, and a silicon oxide film provided on the substrate to cover the...
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7471027 |
Elastic boundary wave device
A boundary acoustic wave device includes a dielectric substance that is laminated on one surface of a piezoelectric substance, an IDT and reflectors used as electrodes are disposed at a boundary...
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7463119 |
Surface acoustic wave device
A surface acoustic wave device has a piezoelectric substrate and an IDT formed on the piezoelectric substrate, and uses an excited wave as an SH wave. The piezoelectric substrate is a quartz plate...
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7459991 |
SAW component having an improved temperature coefficient
An apparatus including a piezoelectric substrate having at least one transducer electrode structure. The structure having a metallization formed by one or more metals with a mean specific density...
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7456553 |
Piezoelectric film laminate and device including piezoelectric film laminate
A piezoelectric film laminate includes a lithium tantalate substrate, and a lead zirconate titanate niobate layer formed above the lithium tantalate substrate.
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7446453 |
Surface acoustic wave devices using surface acoustic waves with strong piezoelectric coupling
A SAW device includes a LiNbO 3 single crystal piezoelectric substrate having an orientation defined by Euler angles (λ,μ,θ), with angle λ ranging from −5° to +5°, angle μ ranging from...
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7439648 |
Surface acoustic wave device and manufacturing method therefor, and communications equipment
A surface acoustic wave device configured by forming an oxide layer 2 on a piezoelectric substrate 1 composed of a lithium tantalate single crystal or a lithium niobate single crystal and...
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7425881 |
Surface acoustic wave device and method that prevents restoration of a pyroelectric effect
A surface acoustic wave device includes a piezoelectric substrate that does not restore the pyroelectric effect, and a method for manufacturing the same. A surface acoustic wave element housed in a...
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7423365 |
Surface acoustic wave device
A surface acoustic wave device includes at least one interdigital transducer having electrodes of a double-layered structure in which an upper film and an underlying film are laminated. The upper...
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7423360 |
Surface acoustic wave device and environmental difference detecting apparatus using the surface acoustic wave device
A surface acoustic wave device includes a three-dimensional substrate having an annular curved surface enabling to propagate a surface acoustic wave, and an electro-acoustic transducing element,...
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7352104 |
Surface acoustic wave element, method of manufacturing the same and surface acoustic wave device
A surface acoustic wave element is provided including an IDT and reflectors provided on both sides of the IDT that are on a surface of a quartz plate. The quartz plate is made from an in-plane...
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7345409 |
Electrode structure for electro-acoustic component and method for producing said structure
For a component operating with acoustic waves, it is proposed to arrange the electrode structure over a mechanically stable adaptation layer that serves to dissipate the electromechanical stresses....
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7345400 |
Surface acoustic wave device
In a surface acoustic wave device, electrode films constituting at least one IDT are disposed on a piezoelectric substrate, and an SiO 2 film is arranged on the piezoelectric substrate so as to...
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7329364 |
Method for manufacturing bonded wafer with ultra-thin single crystal ferroelectric film
A method for manufacturing a bonded wafer with ultra-thin single crystal ferroelectric film is provided, comprising the following steps: providing a single crystal ferroelectric wafer and a carrier...
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7327070 |
Lamb-wave high-frequency resonator
A Lamb-wave high-frequency resonator includes a comb-shaped IDT electrode for exciting a Lamb wave on one main surface of a quartz substrate. The IDT electrode is formed such that the cut angle of...
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7322093 |
Method for producing a boundary acoustic wave device
In a method for producing a boundary acoustic wave device that includes a first medium, a second medium, and a third medium laminated in that order, and electrodes disposed at the interface between...
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RE39975 |
Surface acoustic wave device and communication device
A surface acoustic wave device including a LiTaO 3 substrate, and an interdigital transducer is provided on the LiTaO 3 substrate. The interdigital transducer includes as a major component at...
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7285894 |
Surface acoustic wave devices for high temperature applications
A Surface Acoustic Wave device including a resonator or a delay line formed from an electrically conductive material having a high melting temperature disposed upon the surface of a substrate...
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7282835 |
Surface acoustic wave element
A highly reliable surface acoustic wave device includes a low-resistance piezoelectric substrate that is difficult to reoxidize even in a high-temperature atmosphere containing oxygen. The...
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7233095 |
Single crystal substrate and cutting method thereof
A single crystal substrate and a cutting method thereof are provided. The single crystal substrate includes a langasite substrate with a SAW propagation surface; and input and output IDTs having...
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7233094 |
Piezoelectric device comprising ultrahighly-oriented aluminum nitride thin film and its manufacturing method
The present invention has an objective to provide a high performance piezoelectric element in which is formed an aluminum nitride thin film free from hillocks, cracks, and peeling which exhibits...
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7230612 |
Touch panel device
Surface acoustic waves are propagated in a lower-left oblique direction and a lower-right oblique direction from an excitation element located on the upper side of a non-piezoelectric substrate and...
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7224101 |
Elastic boundary wave device and method of manufacturing the same
An elastic boundary wave device includes a first piezoelectric substrate, IDTs arranged thereon, a first dielectric film having a smoothed surface that covers the IDTs, a second substrate that is a...
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7213322 |
Method for manufacturing surface acoustic wave device
A piezoelectric substrate is provided with interdigital transducer electrodes including a first electrode layer, a second electrode layer, and a third electrode layer that is principally made of...
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7213314 |
Method of forming a surface acoustic wave (SAW) filter device
A SAW filter includes a piezoelectric substrate of Lithium Niobate or optionally Lithium Tantalate having a thickness of at least twice an acoustic wavelength. The piezoelectric substrate is bonded...
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7212080 |
Surface acoustic wave device having two piezoelectric substrates with different cut angles
A surface acoustic wave branching filter includes a first filter and a second filter each including a plurality of surface acoustic wave resonators arranged in a ladder circuit configuration. The...
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7200907 |
Method of manufacturing piezoelectric device
Exemplary embodiments of the present invention provide a method of manufacturing a piezoelectric device that includes a piezoelectric layer having high crystallinity in which crystal orientation is...
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7180223 |
Surface acoustic wave device
There is provided a surface acoustic wave device which can prevent a breakage of electrodes and electrical breaks, decrease an insertion loss of elements, and enhance a Q-factor of resonators....
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7170213 |
Surface acoustic wave element, electric signal processing apparatus using the surface acoustic wave element, environment evaluating apparatus using the electric signal processing apparatus, and analyzing method using the surface acoustic wave element
A surface acoustic wave element includes a single crystal base which has an annular surface formed by at least one portion of a spherical surface, and an exciting unit which excites a surface...
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7158763 |
Multi-IDT SAW hybrid communication system
A SAW communication device has a main IDT mounted on an SAW substrate to receive an RF signal received by an antenna and convert the RF signal to an acoustic wave which travels along the SAW...
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7157983 |
Cut of piezoelectric oscillator, piezoelectric oscillator, and piezoelectric device
A cut of a piezoelectric resonator uses a quartz plate having an electric axis, mechanical axis, and optic axis on an X axis, Y axis, and Z axis, respectively. An X′ axis is set by rotating the X...
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7148610 |
Surface acoustic wave device having improved performance and method of making the device
A surface acoustic wave device includes a transducer electrode formed on a substrate. In one aspect, the electrode has a plurality of layers. At least one of the layers is metal and another of the...
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7122938 |
Surface acoustic wave device
There is disclosed a surface acoustic wave device having at least a diamond film, a piezoelectric-material film, and an electrode on a base material wherein all or some part of the diamond film...
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7109828 |
Surface acoustic wave device, and mobile communication device and sensor both using same
In a surface acoustic wave (SAW) device, such as a SAW resonator or a SAW filter, loss is minimized and steep characteristics are improved. IDT electrodes and a reflector are provided to a...
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7109634 |
End surface reflection type surface acoustic wave device
A surface acoustic wave device with improved reflection characteristics, in which an insulating film is formed so as to cover an electrode film, and the electrode film is made from Al or an Al...
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7105980 |
Saw filter device and method employing normal temperature bonding for producing desirable filter production and performance characteristics
A SAW filter includes a piezoelectric substrate of Lithium Niobate or optionally Lithium Tantalate having a thickness of at least twice an acoustic wavelength. The piezoelectric substrate is bonded...
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