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8917152 |
Spin wave device
A spin wave device according to an embodiment includes: an input interconnect transmitting an input impulse signal; a multilayer film including a foundation layer; a first magnetic layer formed on... |
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8164148 |
Method of generating strong spin waves and spin devices for ultra-high speed information processing using spin waves
Provided are a method of generating strong spin waves, a method of simultaneously generating spin waves and electromagnetic waves, a logic operation device using spin waves, a variety of spin wave... |
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6667672 |
Compact high power analog electrically controlled phase shifter
A high power ferrite microwave phase shifter that is both compact and low cost. The ferrite phase shifter includes a waveguide having a first cylinder and a second cylinder, the radius of the... |
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6426156 |
Magnetostatic wave device
A magnetic garnet single crystal film used for a magnetostatic wave device has a Pb content in the range of from more than zero to about 4,000 ppm by weight. |
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6194091 |
Magnetostatic wave device
A magnetostatic wave device comprises a magnetic garnet single crystal film. The single crystal film magnetic garnet is represented by the general formula of Y3 Fe5-x-y Inx My O12 (wherein M is at... |
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6121856 |
Bulk acoustic wave device with lamb wave mode selection
A bulk acoustic wave delay line is disclosed having a thin, amorphous metal substrate, and deposited on the first and second surface at each end of which is a very thin layer of a piezoelectric... |
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6016088 |
Magnetostatic wave device
A magnetostatic wave device comprises a Y3 Fe5 O12 -based magnetic garnet single crystal film, and the magnetic garnet single crystal film contains indium as a substitute for a part of iron, and... |
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5985472 |
Magnetostatic wave device
There is provided a magnetostatic wave device which operates even with a substitution R, A:YIG having a small film thickness and which has a wider operational frequency band. A magnetostatic wave... |
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5828274 |
Clad ultrasonic waveguides with reduced trailing echoes
Ultrasonic buffer rods are useful for on-line process control of industrial material processes at elevated temperatures. In order to increase the signal-to-noise ratio in the reflected ultrasonic... |
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5606297 |
Conical ultrasound waveguide
A waveguide for projecting a longitudinal acoustic wave of wavelength λ from an ultrasound energy source toward a target area. The waveguide has at least one tubular channel. The channel has... |
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5601935 |
Surface magnetostatic wave device
A surface magnetostatic wave device includes an Fe-containing garnet single crystal film grown on a gadolinium gallium garnet substrate. The crystallographic plane azimuth of the gadolinium... |
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5351219 |
Acoustic device
An acoustic device has an acoustic wave propagating medium exhibiting elastic abnormality in the vicinity of a Curie temperature. It is desirable that such an acoustic wave propagating medium be... |
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5241287 |
Acoustic waveguides having a varying velocity distribution with reduced trailing echoes
Acoustic buffer rods are useful in the nondestructive ultrasonic evaluation of materials. In order to reduce the occurrence of spurious signals in the reflected acoustic waves forming an acoustic... |
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5142254 |
Ultrasonic delay line device with an adjusting circuit for adjusting delay time, a comb-shaped filter using the ultrasonic delay line device and a method of adjusting delay time
An ultrasonic delay line device has an adjusting circuit for adjusting delay time provided between two terminals at the power input side of an ultrasonic delay line, wherein the adjusting circuit... |
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5122766 |
Acoustic wave delay system with an optically controlled delay medium
A delay device for a frequency signal comprises an element made of acousto-optical material, provided with a first piezo-electric transducer transmitting an acoustic signal in the element and with... |
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5056137 |
Method and apparatus for encoding and decoding signals
In a method and apparatus for encoding signals, signals are passed through a body of a material that modifies a characteristic of signals passing therethrough, such as an acousto-electromagnetic.... |
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4912478 |
Signal time delay magnetostatic spin wave device for phased array antennas
A phased array radar antenna utilizing signal time delay magnetostatic spin wave devices operable to provide feed line transmit time control for variable length transmission feed lines. The... |
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4743870 |
Longitudinal mode fiber acoustic waveguide with solid core and solid cladding
An elastic waveguide, for propagating acoustic waves, consists of an elongated solid core region and an elongated solid outer cladding region. The acoustic waves propagate in a mode where the... |
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4742318 |
Birefringent single-mode acoustic fiber
A birefringent single-mode acoustic fiber for propagating linearly polarized shear acoustic waves while preserving linear polarization, comprises an elongated core region of a solid material in... |
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4691178 |
Ultrasonic delay line
An ultrasonic delay line including an input transducer for producing a sound wave depending on an input voltage, a delay medium for transmitting the sound wave produced by the input transducer and... |
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4675682 |
Magnetostatic delay line with improved delay linearity
An arrangement for improving the frequency plane delay linearity of a frequency dispersive delay line of the type employing ferrite film materials such as yttrium iron garnet. Linearity... |
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4614919 |
Magnetostatic wave frequency analyzer apparatus
A magnetostatic wave frequency analyzer apparatus utilizing forward volume waves. A single input transducer is arranged opposite a plurality of output transducers to receive the different... |
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4614923 |
Method of suppressing magnetostatic waves in magnetic garnet films for microwave circuit applications
Method for the controlled suppression of magnetostatic waves within magnetic garnet films for microwave circuit applications, based upon the adoption of multilayer structures of epitaxial garnet... |
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4609890 |
Bulk acoustic wave signal processing devices
An acoustic wave signal processing device which in a preferred embodiment utilizes at least one holographic grating formed within a portion of the interior of a substrate which is capable of... |
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4571562 |
Tunable selective devices based for magnetostatic volume waves
The invention relates to tunable selective devices based on magnetostatic volume waves and has as its object to provide a device comprising two resonator networks arranged to exchange... |
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4554519 |
Magnetostatic wave delay line
A magnetostatic wave device operating within a biasing magnetic field for delaying microwave signals is described including a layer of YIG material having a predetermined thickness, first and... |
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4539501 |
Epitaxial structure with increased piezoelectric effect and a surface acoustic wave electronic device comprising such a structure
An epitaxial structure in which a constraint imposed by forced epitaxy causes an increase in the piezoelectric effect of a group of layers. The structure which provides this effect utilizes a... |
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4488127 |
Bifurcated electro-acoustic delay lines having transducers bonded at an area of bifurcation
A bifurcated electroacoustic delay line exhibits at least a pair of substantially identical branches, each assuming a generally pentagonal profile. Each branch is configured to provide (2n+3)... |
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4477783 |
Transducer device
The disclosure is directed to an ultrasonic transducer device that includes a plurality of layers of piezoelectric material. A plurality of conductive electrodes are disposed on the layers of... |
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4472692 |
Tunable selective device using magnetostatic bulk waves
Tunable selective devices utilizing forward magnetostatic bulk waves. A filter is able to act as an oscillator loop or as a passive transmission system in which two resonant cavities including... |
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4419637 |
Magnetostatic wave dioptric device
A magnetostatic wave device in which waves propagate in a layer of magnetic material grown on a non-magnetic crystalline substrate with a grating arranged in the wave path for modifying... |
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4400669 |
Magnetostatic wave delay line having improved group delay linearity
The linearity of group delay versus frequency in magnetostatic wave delay lines is improved by a linear variation of one of three discrete parameters in the region between the two delay line... |
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4395686 |
Attenuation of higher order width modes in magnetostatic wave devices
A magnetostatic wave device is described incorporating a plurality of resistive strips spaced apart from one another and transverse to the propagation path of magnetostatic waves in a material... |
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4349794 |
Shallow bulk acoustic wave devices
Acoustic wave devices employing shallow bulk acoustic waves rather than surface acoustic waves, to provide higher frequencies of operation and other significant advantages, such as less... |
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4328472 |
Acoustic guided wave devices
An acoustic guided wave device has a wave guiding volume (20) which may include transducer elements (22-25) and other metal elements (26), sandwiched between two acoustic half spaces (10, 12)... |
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4290033 |
Shallow bulk acoustic wave devices employing energy trapping
Energy trapping elements for use with shallow bulk acoustic wave devices of various kinds, to minimize the insertion loses in such devices due to spreading of electroacoustic energy into the... |
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4264882 |
Electric signal transmission device employing a ferromagnetic amorphous ribbon
An electric signal transmission transducer employing a ferromagnetic amorphous ribbon and especially an electric signal transmission element and system and an electroacoustic signal conversion... |
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4259649 |
Electroacoustic delay line apparatus
An electroacoustic apparatus is disclosed for providing beam steered and focused compressional or shear waves, using an interdigital generating grid operative with one surface of a piezoelectric... |
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4204178 |
Acoustic wave devices
An acoustic surface wave device employs a substrate structurally orientated to enhance the propagation of acoustic surface skimming bulk waves. Multiple reflections from opposed end faces of the... |
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4165498 |
Variable delay device
A variable delay device for delaying an electrical signal includes a bar-shaped magnetostrictive member to be a transmitting path of a supersonic wave, an input transducer for converting an... |
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4123731 |
Glass for use in ultrasonic delay lines
A glass suitable for use in ultrasonic delay lines which comprises the components by weight, SiO2 42 to 27%, PbO 71 to 52% and preferably contains K2 O and/or Na2 O. The glass further contains... |
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4112396 |
Echo annexation device
The present invention is related to devices for annexing an echo resembling natural reverberation in the course of sound recording, in which a line or lines of coil spring with a portion or... |
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4077023 |
Elastic waveguide
Elastic waves are propagated in a waveguide comprising an elongate central core region and an outer cladding region, the cladding region having a larger bulk shear elastic wave velocity than the... |
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RE29557 |
Tl3 PSe4 Compound, single crystals, and acousto-optical devices
The compound Tl3 PSe4 is disclosed. Non-conducting single crystals of the compound are prepared which have outstanding acousto-optical properties including an exceptionally high acousto-optical... |
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3961289 |
Ultrasonic delay material
A spinel-type oxide exhibiting a cooperative Jahn-Teller effect shows an extraordinary reduction of sound velocity therethrough at temperatures near the Jahn-Teller phase transition temperature... |
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3956718 |
Crystals having zero temperature coefficients of delay
Crystals or Tl3 VS4, Tl3 VSe4, Tl3 NbS4, Tl3 NbSe4, Tl3 TaS4, and Tl3 TaSe4 are disclosed which have a surface containing of normal to a zero temperature coefficient of delay direction. The... |
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3946256 |
System for generating or sensing transverse elastic bulk waves in solids
A device for generating or sensing transverse elastic bulk waves in solids includes a piezoelectric material engaging a surface of the solid and having a two-fold axis or equivalent symmetry... |
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3895324 |
Apparatus for processing electromagnetic wave energy
A device for processing electromagnetic wave energy by converting the wave energy to spin waves and/or elastic waves, the present disclosure being particularly directed to the concept of providing... |
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3869683 |
Variable broadband delay line
A broadband magnetic bubble delay device having an adjustable delay time. A latelet or film of uniaxial magnetic material which has been appropriately saturated with a two dimensional array of... |
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3838365 |
ACOUSTIC DEVICES USING AMORPHOUS METAL ALLOYS
Amorphous metal alloys are employed in acoustic devices dependent upon the properties of low acoustic velocity and low attenuation. Such devices include wire, strip and bulk delay lines. |