摘要:
A surface acoustic wave device includes a piezoelectric substrate having a first surface on which comb-like electrodes are formed, and a second surface, and a support substrate joined to the second surface of the piezoelectric substrate. The piezoelectric substrate is made of lithium, tantalate, and the support substrate is made of sapphire. The following expressions being satisfied: T/t 10 (2) where T is a thickness of the piezoelectric substrate, t is a thickness of the support substrate, and λ is a wavelength of a surface acoustic filter, propagated along the first surface of the piezoelectric substrate.
摘要翻译:表面声波装置包括具有形成有梳状电极的第一表面和第二表面的压电基板和连接到压电基板的第二表面的支撑基板。 压电基板由钽酸锂制成,支撑基板由蓝宝石制成。 满足以下表达式:<?in-line-formula description =“In-line Formulas”end =“lead”?> T / t <1/3(1)<?in-line-formula description =“In- 行公式“end =”tail“?> <?in-line-formula description =”In-line Formulas“end =”lead“?> T / lambda> 10(2)<?in-line-formula description = 在线公式“end =”tail“?>其中T是压电基板的厚度,t是支撑基板的厚度,λ是表面声滤波器的波长,沿着压电的第一表面传播 基质。
摘要:
A surface acoustic wave device includes multiple SAW resonators formed on a piezoelectric substrate and connected in a ladder arrangement, the piezoelectric substrate having a polarization inverted region on which either a series-arm resonator or a parallel-arm resonator is formed.
摘要:
A configuration that reduces a parasitic capacitance between wires is achieved at a low cost. Disclosed is an acoustic wave filter provided with a piezoelectric substrate 1, resonators 2a and 2b that include a comb-shaped electrode formed on the piezoelectric substrate 1, a wiring portion 3 that is connected to the comb-shaped electrode, and a dielectric layer 4 formed to cover the comb-shaped electrode. The wiring portion 3 is provided with a lower layer wiring portion 3d that is disposed in the same layer as the comb-shaped electrode and an upper layer wiring portion 3e that is disposed on the lower layer wiring portion 3d. The upper layer wiring portion 3e includes a region that has a wider electrode width than the electrode width of the lower layer wiring portion 3d.
摘要:
A surface acoustic wave device includes: a piezoelectric substrate that has two or more resonators formed on a surface; and a supporting substrate that is joined to another surface of the piezoelectric substrate. In this surface acoustic wave device, at least two of the resonators have exciting portions that overlap each other in the direction of propagating surface acoustic waves, and at least a part of the piezoelectric substrate is removed or modified to have different properties between at least one pair of overlapping resonators among the resonators having the overlapping portions.
摘要:
A surface acoustic wave device includes a piezoelectric substrate on which resonators having comb-like electrodes are formed; and a silicon substrate that is directly bonded to the piezoelectric substrate and is less expansive than the piezoelectric substrate, a cavity being formed in the silicon substrate and being located below at least one of the resonators.
摘要:
An acoustic wave filter includes: a ladder filter that has acoustic wave resonators connected in series and parallel arms; an inductor that is provided between a ground and at least one of the parallel-arm resonators in the ladder filter; and a resonance circuit that is provided in parallel with the inductor, and is located between the ground and the parallel-arm resonators in the ladder filter. In this acoustic wave filter, the resonance frequency of the resonance circuit is expressed as: 2f0−150 MHz
摘要:
An acoustic wave filter includes: a ladder filter that has acoustic wave resonators connected in series and parallel arms; an inductor that is provided between a ground and at least one of the parallel-arm resonators in the ladder filter; and a resonance circuit that is provided in parallel with the inductor, and is located between the ground and the parallel-arm resonators in the ladder filter. In this acoustic wave filter, the resonance frequency of the resonance circuit is expressed as: 2f0−150 MHz
摘要:
Provided is a thermosetting resin composition that contains 40 to 80 parts by volume of an inorganic filler with respect to 100 parts by volume of thermosetting resin solids and the inorganic filler. The inorganic filler contains (A) at least one type of particles selected from among gibbsite-type aluminum hydroxide particles and magnesium hydroxide particles having an average particle size (D50) of 1 to 15 μm; (B) aluminum oxide particles having an average particle size (D50) of 1.5 μm or less; and (C) a molybdenum compound, and the blending ratios (by volume) of the component (A), the component (B) and the component (C) with respect to 100% as the total amount of inorganic filler are component (A): 30 to 70%, component (B): 1 to 40%, and component (C): 1 to 10%.
摘要:
An image forming apparatus allowing a user to easily access an operating section even in a large-size apparatus can be provided. An image forming apparatus 100 includes a main machine 110 including an operating section 113 and capable of functioning as a multifunction machine by itself, and at least one option machine 120 to 190 added to a side-face side of an enclosure 111 of the main machine. The apparatus 100 includes the operating section 113 at a fixed position in the width direction of the enclosure. The enclosure has a unified first color of a same tone at a front face thereof, and an operating position line 101 is formed at a part of the front face of the enclosure and has a second color that is clearly different from the first color so as to be a guide indicating a position of the operating section 113.
摘要:
In a solid-state image sensor, first and second column readout lines are provided to each pixel column, pixel rows are divided into pixel rows of first and second groups, the first group is divided into subgroups each formed from pixels of an identical color, the second group is divided into subgroups each formed from pixels of an identical color, signals from pixels of the pixel rows of the first group are output to the first column readout lines, and signals from pixels of the pixel rows of the second group are output to the second column readout lines. Pixels of an identical subgroup in an identical pixel column share a conversion region and an amplification element, a given conversion region and another conversion region included in a pixel column identical to a pixel column of the given conversion region do not intersect with each other.