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Matches 1 - 50 out of 52,751

Document Document Title
WO/2021/088476A1
The present invention relates to the technical field of filters, in particular to a method for improving the power capacity of a bulk acoustic wave filter and a filtering element. The method comprises the following steps: step S1: increa...  
WO/2021/090775A1
Provided is an elastic wave device that uses a silicon carbide substrate as a support substrate, can improve the characteristics of a main mode, and can suppress spurious emissions caused by Rayleigh waves. This elastic wave device 1 c...  
WO/2021/088401A1
Disclosed are a double layer electrode-based surface acoustic wave device having a high electromechanical coupling coefficient, and a preparation method therefor. The structure of the surface acoustic wave device is as follows: a substra...  
WO/2021/090861A1
The present invention provides an elastic wave device which uses a silicon carbide substrate as a support substrate and can suppress a high-order mode. An elastic wave device 1 according to the present invention is provided with: a sup...  
WO/2021/088477A1
Provided are a duplexer and an electronic device. A suppression zero point can be generated at a low-frequency end of a transmission filter by means of a tuning unit circuit, and a zero point position in a wider frequency band range is c...  
WO/2021/085964A1
An electronic device and oscillator structure are provided. The electronic device includes a printed circuit board, an oscillator configured to oscillate at a frequency corresponding to an operation clock of the electronic device, and a ...  
WO/2021/085609A1
An acoustic wave filter (1) comprises an SAW resonator and a BAW resonator. The SAW resonator includes a piezoelectric substrate (10) and IDT electrodes (20) formed on the substrate (10). The IDT electrodes (20) include a pair of comb-sh...  
WO/2021/084768A1
A reservoir element according to an embodiment comprises: a piezoelectric material that has a propagation region in which elastic waves propagate; and on the piezoelectric material, an input unit that generates a plurality of elastic wav...  
WO/2021/083898A1
In at least one embodiment, the electric component comprises a first BAW-resonator (1), a second BAW-resonator (2) electrically connected to the first BAW-resonator and a carrier substrate (3) with a top side (30) on which the BAW-resona...  
WO/2021/085465A1
This invention improves power resistance while suppressing deterioration of characteristics. An elastic wave device (1) includes a piezoelectric substrate (2) and an electrode (60). The electrode (60) is formed on the piezoelectric subst...  
WO/2021/079905A1
Provided is an elastic wave device capable of suppressing deterioration in isolation characteristics. An elastic wave device 1 is provided with: a piezoelectric substrate 3; a first signal electrode 5A, a second signal electrode 6A, an...  
WO/2021/077716A1
Disclosed is a bulk acoustic resonator, which comprises: a base, an acoustic mirror cavity provided in the base, a bottom electrode, a top electrode, and a piezoelectric layer provided between the bottom electrode and the top electrode, ...  
WO/2021/053399A3
The invention relates to a transducer structure (200) for a surface acoustic device comprising a composite substrate comprising a piezoelectric layer (212), a pair of interdigitated comb electrodes (206, 208), comprising a plurality of e...  
WO/2021/077713A1
Disclosed is a bulk acoustic wave resonator, comprising: a substrate; an acoustic mirror; a top electrode; a bottom electrode; and a piezoelectric layer disposed between the bottom electrode and the top electrode, wherein the overlapping...  
WO/2021/079910A1
Provided is an elastic wave device that is less likely to be degraded in characteristics even when miniaturization or compounding progresses. An elastic wave device 1 is provided with: a piezoelectric substrate 2; first and second elas...  
WO/2021/077715A1
The present invention relates to a bulk acoustic wave resonator, comprising: a substrate; an acoustic mirror; a bottom electrode; a top electrode; and a piezoelectric layer disposed between the bottom electrode and the top electrode, whe...  
WO/2021/077711A1
The present invention relates to relates to a bulk acoustic wave resonator, comprising: a substrate; an acoustic mirror; a bottom electrode; a top electrode; and a piezoelectric layer, arranged between the bottom electrode and the top el...  
WO/2021/079715A1
Provided is a sensor device in which deterioration of resonance characteristics of a sensitive film can be suppressed. A sensor device according to one embodiment comprises: a substrate; a piezoelectric film; a lower electrode and an upp...  
WO/2021/079830A1
This elastic wave device comprises: a piezoelectric film; and a first resonator and a second resonator that include an IDT electrode, positioned on the top surface of the piezoelectric film, and uses a plate wave. The thickness of the pi...  
WO/2021/077712A1
The present invention relates to a bulk acoustic resonator. The resonator comprises: a base, an acoustic mirror, a bottom electrode, a top electrode, and a piezoelectric layer provided between the bottom electrode and the top electrode, ...  
WO/2021/078916A2
Acoustic wave filter devices are disclosed. In an embodiment, the device includes an acoustic wave resonator and a reflecting layer located below the acoustic wave resonator. The wave resonator includes an input electrode including a fir...  
WO/2021/077714A1
The present invention discloses a bulk acoustic wave resonator, which comprises a top electrode having a gap layer, the top electrode comprises a first top electrode and a second top electrode, the first top electrode is attached to the ...  
WO/2021/077717A1
The present invention relates to a bulk acoustic resonator. The resonator comprises: a base, an acoustic mirror, a bottom electrode, a top electrode, and a piezoelectric layer arranged between the bottom electrode and the top electrode, ...  
WO/2021/053401A3
The invention relates to a transducer structure (100) for a surface acoustic device comprising a composite substrate comprising a piezoelectric layer (104), a pair of interdigitated comb electrodes (108, 110), comprising a plurality of e...  
WO/2021/078917A1
An acoustic wave filter device with two-stage acoustic wave filters is provided. Each of the two stages includes a respective acoustic wave filter element. A first acoustic wave filter element (100a) includes a first input electrode (150...  
WO/2021/075124A1
In this invention, a first and second mounting terminals, which are connected to metal films for the first and second mounting terminals formed on both end portions of a piezoelectric vibration plate that sandwich a vibration part, are e...  
WO/2021/073022A1
A bulk acoustic resonator, which comprises: a substrate; an acoustic lens (18); a bottom electrode (10); a top electrode (12); and a piezoelectric layer (11). An edge part of the top electrode (12) is provided with a gap part, a gap is p...  
WO/2021/068668A1
A filter circuit, a method for improving the performance of a filter circuit, and a signal processing device. The filter circuit comprises a plurality of resonators, the plurality of resonators comprising a first number of series-connect...  
WO/2021/070501A1
This SAW module comprises: a piezoelectric element substrate including a piezoelectric body; an IDT that is provided on a surface of the piezoelectric element substrate and is configured by a comb-like electrode pair; and a coating layer...  
WO/2021/071144A1
Disclosed is a stacked common mode filter in which an ESD absorption layer is arranged in a common mode filter applied to the mipi C-PHY standard, so that damage to an element caused by ESD is prevented while a change in filter performan...  
WO/2021/068670A1
Provided are a filter circuit and a signal processing device. The filter circuit comprises a plurality of resonators, wherein the plurality of resonators comprise a first number of series-connected resonators and a second number of paral...  
WO/2021/071463A1
A hybrid resonator includes an acoustic wave resonator (AWR) having a piezoelectric material; a first electrical contact, electrically conductively connected to the piezoelectric material; and a second electrical contact, electrically co...  
WO/2021/068671A1
Provided are a filter circuit and a method for improving the performance of a filter circuit, and a signal processing device. The filter circuit comprises a plurality of resonators, wherein the plurality of resonators comprise a first nu...  
WO/2021/065684A1
Provided is an elastic wave device that can more effectively suppress a transverse mode. This elastic wave device 1 is provided: with a high-acoustic-velocity film 14; a low-acoustic-velocity film 15; a piezoelectric layer 16 formed fr...  
WO/2021/063492A1
The present invention relates to a Bulk Acoustic Wave (BAW) device. In particular, the invention is concerned with suppressing spurious modes in a BAW device. The BAW device comprises a piezoelectric layer (101), and a top electrode (102...  
WO/2021/060522A1
Provided is an elastic wave device that can increase the Q value even when miniaturization has advanced. This elastic wave device 1 comprises a piezoelectric layer 2 comprising lithium niobate or lithium tantalite, and a first electrod...  
WO/2021/056880A1
Disclosed is a radio-frequency front-end architecture, comprising: a power amplifier module integrated duplexer (PAMiD); an antenna; and at least one tunable matching network, wherein the PAMiD comprises a power amplifier, and the at lea...  
WO/2021/061308A1
An RF filter comprising a resonator element and a polymer composition is provided. The polymer composition contains an aromatic polymer and has a melting temperature of about 240°C or more. The polymer composition exhibits a dielectric ...  
WO/2021/060153A1
Provided is an elastic wave device that makes it possible to suppress IMD and to suppress degradation of reception sensitivity. An elastic wave device 1 that comprises a piezoelectric substrate 2, a first IDT electrode 3, reflectors 4A...  
WO/2021/060513A1
Provided is an elastic wave device that is capable of dealing with higher frequencies and offering improved linear performance. An elastic wave device (1) is equipped with a piezoelectric body layer (4), a first electrode (51), and a sec...  
WO/2021/060523A1
Provided is an elastic wave device capable of increasing Q values, even if made more compact, and capable of easily adjusting frequency. The elastic wave device 1 comprises: a piezoelectric layer 2 comprising lithium niobate or lithium...  
WO/2021/062421A1
There is disclosed acoustic resonators and filter devices. An acoustic resonator includes a substrate having a surface and a single-crystal piezoelectric plate having parallel front and back surfaces, the back surface attached to the sur...  
WO/2021/060509A1
Even when progress is made on miniaturization, the present invention can increase a Q value and reduce size. This elastic wave device further includes a piezoelectric layer (4), a first electrode (51) and a second electrode (52), a first...  
WO/2021/060512A1
Provided is an elastic wave device that makes it possible to achieve size reduction but also increase Q value and that also makes it possible to adjust resonant frequency. An elastic wave device (1) that comprises a piezoelectric layer (...  
WO/2021/060444A1
This elastic wave filter comprises a first chip and a second chip electrically connected to the first chip. Each of the chips includes a support substrate, a plurality of acoustic films, a piezoelectric film, and an excitation electrode ...  
WO/2021/059581A1
A piezoelectric vibrator (1) is provided with: a piezoelectric vibration element (10) that has a piezoelectric piece (11) and a pair of electrodes (14a, 14b) including electrodes facing each other with the piezoelectric piece (11) sandwi...  
WO/2021/059576A1
This piezoelectric oscillator (1) comprises: a base (31) having a main surface (31A); a piezoelectric oscillating element (10) mounted to the main surface (31A) of the base (31); a lid member (40) having a recessed section that accommoda...  
WO/2021/060507A1
Provided is an elastic wave device with which it is possible to raise the Q-value and increase capacity while reducing the size. The elastic wave device (1) comprises a piezoelectric layer (4), and a first electrode (51) and a second ele...  
WO/2021/060510A1
The present invention increases the Q value and maintains strength even when the size of a device is reduced. This electric wave device is provided with a piezoelectric layer (4), a first electrode (51) and a second electrode (52), a fir...  
WO/2021/060150A1
Provided is an elastic wave filter that can both suppress transverse mode ripple and improve the steepness of filter characteristics, even when made more compact. The elastic wave filter comprises a plurality of elastic wave resonators...  

Matches 1 - 50 out of 52,751