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WO/2022/145202A1 |
An electronic device (100) comprises a substrate (10), a base substrate (20), a metal connection body (30), a support body (40), a metal body (50), and a via (60). The substrate (10) is a piezoelectric substrate or a chemical compound se...
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WO/2022/143968A1 |
Provided are a micro-electro-mechanical system (MEMS) device and method for fabrication thereof, comprising: providing a logic chip, comprising a substrate (10) and a complementary metal–oxide–semiconductor (CMOS) circuit (11) locate...
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WO/2022/145418A1 |
Provided is a high-frequency module in which isolation can be ensured between a first filter and a second filter that are capable of simultaneous communication. A high-frequency module (1) is provided with: a mounting board (16); a first...
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WO/2022/141392A1 |
A filter (100), and a method for preparing the filter (100). The filter (100) comprises: a substrate (10); a series resonator (20), wherein the series resonator (20) comprises a first Bragg reflection layer (201) and a first piezoelectri...
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WO/2022/145306A1 |
Provided is a filter device with which it is possible to realize a broadband passband and suppress the degradation of filter characteristics. This filter device (2) comprises a filter substrate (2), and a ladder-type filter (30) mounted ...
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WO/2022/145203A1 |
An electronic device (100) comprises a substrate (10), a base substrate (20), a metal connection body (30), a metal body (50), and a via (60). The substrate (10) is a piezoelectric substrate or a chemical compound semiconductor substrate...
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WO/2022/143286A1 |
Provided is a bulk acoustic resonator, comprising: a substrate (100); an acoustic mirror; a bottom electrode (130); a top electrode (140); and a single-crystal piezoelectric layer (120), which is disposed between the bottom electrode (13...
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WO/2022/144564A1 |
The present disclosure relates to Bulk Acoustic Wave, BAW, devices. In particular, the disclosure is concerned with a BAW device including at least one BAW resonator and a frame. The frame may be arranged next to or around the BAW resona...
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WO/2022/143982A1 |
Disclosed are a multiplexer, a method for improving the isolation of a multiplexer, and a communication device, wherein there is better isolation between filters in the multiplexer. The multiplexer includes two or more filters connected ...
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WO/2022/134860A1 |
Disclosed are a novel FBAR filter and a preparation method therefor. The method comprises: etching a groove in a preparation substrate; preparing a piezoelectric material and a bottom electrode in the groove, and first preparing a thin s...
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WO/2022/138552A1 |
Provided is an elastic wave device that can increase heat dissipation from a cavity part in a support member. This elastic wave device 10 comprises a support member 13 having a support substrate 16, a piezoelectric layer 14, an IDT ele...
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WO/2022/137892A1 |
A high-frequency module (1A) comprises: a module substrate (91) that has main surfaces (91a and 91b) facing one another; a transmission filter (63T) that has a base surface (63a) and a top surface (63b) facing one another, and allows hig...
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WO/2022/135252A1 |
The present invention relates to a bulk acoustic resonator and a manufacturing method therefor. The resonator comprises: a substrate, an acoustic mirror, a bottom electrode, a top electrode, a piezoelectric layer, which is arranged betwe...
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WO/2022/138739A1 |
This invention curbs the occurrence of cracking in a piezoelectric layer. This elastic wave device is provided with: a support member having a support substrate; a piezoelectric layer containing lithium niobate or lithium tantalate which...
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WO/2022/134861A1 |
Disclosed are a frequency-tunable film bulk acoustic resonator and a preparation method therefor. The resonator comprises a substrate, an air gap, a sandwiched structure formed by electrodes and piezoelectric layers, and an electrode lea...
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WO/2022/138827A1 |
Provided is a filter device that has a wider pass-band and is reduced in size. A filter device 1 of the present invention comprises a plurality of resonators including at least one series-arm resonator and at least one parallel-arm res...
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WO/2022/134195A1 |
Disclosed in the present application are a surface acoustic wave resonator and a manufacturing method therefor. The surface acoustic wave resonator comprises a piezoelectric substrate, an interdigital transducer located on a surface of t...
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WO/2022/138457A1 |
Provided is an elastic wave device that makes it possible to increase heat dissipation in configurations in which a support member includes a cavity section. The elastic wave device 10 comprises: a support member 13; a piezoelectric la...
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WO/2022/140653A1 |
An acoustic wave device includes a cavity in a substate, an overlapping region in which portions of adjacent first and second interdigitated electrodes oppose each other, a first gap region that is in between a first busbar and the overl...
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WO/2022/138514A1 |
The present invention lowers the profile of a high frequency module. A high frequency module (100) is provided with a mounting substrate (9), a first electronic component (1), and a second electronic component (2). The mounting substrate...
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WO/2022/134196A1 |
Disclosed by the present application are a thin-film bulk acoustic wave resonator, a fabrication method therefor, and a filter. The thin-film bulk acoustic wave resonator comprises: a substrate and a piezoelectric thin-film stacking stru...
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WO/2022/138328A1 |
Provided is a surface acoustic wave device whereby breakage of IDT electrodes and peeling of the IDT electrodes off from a piezoelectric layer can be suppressed. A surface acoustic wave device 10 is provided with: a support member 13; ...
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WO/2022/138140A1 |
Provided is a composite filter device which can suppress the occurrence of ripples in a pass band of another band pass filter connected in common. This composite filter device comprises: a ladder-type filter 10 having at least one seri...
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WO/2022/137624A1 |
A crystal oscillator 1 comprising: a crystal oscillation element 10 that has a crystal piece 11, excitation electrodes 14a, 14b, and connection electrodes 16a, 16b; and a substrate 30 that has a substrate body 31, substrate electrodes 33...
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WO/2022/137646A1 |
Provided is a composite substrate having excellent heat resistance while confining the energy of elastic waves in a piezoelectric layer. The composite substrate according to an embodiment of the present invention has a piezoelectric laye...
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WO/2022/138443A1 |
Provided is an elastic wave device that has a wide fractional bandwidth. An elastic wave device 1 that comprises a high acoustic velocity member 3, a low acoustic velocity layer 4 that is layered on the high acoustic velocity member 3,...
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WO/2022/131309A1 |
The present invention suppresses accumulation of heat. An elastic wave device according to the present invention is provided with: a supporting substrate; a piezoelectric layer which contains lithium niobate or lithium tantalate, while b...
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WO/2022/131133A1 |
The present invention addresses the problem of improving isolation. In this high-frequency module (100), a first electronic component (1) and a second electronic component (2) are mounted on a principal surface (91) of a mounting substra...
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WO/2022/131213A1 |
Provided is a piezoelectric vibration device in which a crystal vibrating plate (10) has a cut-out portion (10a) provided between a vibrating portion (11) and an outer frame portion (12). A metal film (28) is formed on a first major surf...
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WO/2022/130733A1 |
The present invention improves isolation between a plurality of electronic components. A high frequency module (100) comprises: a mounting substrate (10); a first electronic component (201) and a second electronic component (202); a meta...
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WO/2022/131237A1 |
Provided is an elastic wave device that, when used for an elastic wave resonator, is capable of narrowing the fractional bandwidth, and when used for a band-pass type filter, is capable of narrowing the bandwidth and increasing steepness...
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WO/2022/130670A1 |
A quartz vibrator 1 comprises: a quartz vibration element 10 having a quartz piece 11, excitation electrodes 14a, 14b, and connection electrodes 16a, 16b; a substrate 30; and a conductive holding member 50 provided between the connection...
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WO/2022/131216A1 |
Provided is an elastic wave device that can suppress variation in the thickness of a piezoelectric layer, and that can suppress deterioration in frequency properties. An elastic wave device 1 according to the present invention comprise...
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WO/2022/130676A1 |
The present invention improves DLD and suppresses reductions in resonant frequency adjustment rate. A resonator 10 that comprises: a vibrating part 110 that includes a base part 130 and a plurality of vibrating arms 121A–121D, at lea...
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WO/2022/131157A1 |
The present invention provides a high-frequency module that can be miniaturized in a configuration provided with an inductor and a switch for switching conduction/non-conduction between the inductor and a signal path. A high-frequency mo...
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WO/2022/131076A1 |
Provided is an elastic wave device that can promote miniaturization. This elastic wave device 10 comprises: a support member 13; a piezoelectric layer 14 having a first main surface 14a and a second main surface 14b positioned at the s...
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WO/2022/130668A1 |
Provided is a piezoelectric oscillator that is capable of holding up the tip of a piezoelectric oscillation element while suppressing the occurrence of stress in the piezoelectric oscillation element. A crystal oscillator 1 comprises: ...
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WO/2022/121904A1 |
Disclosed are an acoustic wave filter, a multiplexer, and a communication device, which contribute to improve nonlinear performance. The acoustic wave filter comprises a plurality of piezoelectric acoustic resonators, and at least one se...
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WO/2022/124409A1 |
The present invention reduces unwanted waves. An elastic wave device according to the present invention is provided with: a supporting substrate; a piezoelectric layer 2 which contains lithium niobate or lithium tantalate, while having t...
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WO/2022/123816A1 |
Provided are a piezoelectric vibrator, a piezoelectric oscillator and a method for making a piezoelectric vibrator wherein sticking of a vibration part can be suppressed. A crystal vibrator 1 comprises: a crystal vibration element 10 i...
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WO/2022/121958A1 |
Provided by the present invention are an acoustic wave resonator having a temperature compensation layer, and a filter and an electronic device; a parameter such as the electrode piezoelectric ratio is introduced and the manner of calcul...
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WO/2022/124391A1 |
The present invention facilitates the adjustment of a fractional bandwidth. This elastic wave device comprises: a support substrate; a piezoelectric layer which has a first principal surface and contains lithium niobate or lithium tantal...
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WO/2022/123823A1 |
This hybrid filter (10) comprises: a module substrate (80) having a main surface (80a) and a main surface (80b) facing each other; elastic wave resonators (P1, P2) disposed on the module substrate (80); inductors (L1 to L3) disposed on t...
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WO/2022/124064A1 |
A high-frequency module (10) comprises a module board (20), an inductor device (100), and an elastic wave filter (200). When viewed in plan view from the normal direction of the module board (20), the inductor device (100) is disposed so...
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WO/2022/121818A1 |
A method, an acoustic wave filter, a multiplexer, and a communication device for improving nonlinear performance are disclosed. According to the method, the acoustic wave filter comprises a plurality of piezoelectric acoustic resonators ...
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WO/2022/123892A1 |
This high frequency module (1A) is provided with: a module substrate (80); an electronic component which is arranged on a main surface (80a); a resin member (81) which covers at least a part of the main surface (80a) and at least a part ...
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WO/2022/119655A1 |
A device includes a piezoelectric layer on a substrate and including a portion included in an acoustic resonator, a first conductive layer on the piezoelectric layer and including a first electrode of the acoustic resonator on a first si...
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WO/2022/118970A1 |
The present invention reduces stress at the end of an electrode on a piezoelectric layer side. This elastic wave apparatus comprises: a support substrate; a piezoelectric layer having a first major surface and a second major surface; and...
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WO/2022/116396A1 |
The present invention discloses a passive cavity type single crystal thin-film bulk acoustic resonator (FBAR) structure, comprising a support substrate, a bonding adhesion layer, an epitaxial substrate layer, and a single crystal piezoel...
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WO/2022/119967A1 |
An example system for passive sensing includes a coupled pair of resonators including a sensor resonator and a reader resonator, the sensor resonator including a resistor a loss associated with the resistor, and the reader resonator incl...
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