摘要:
A garnet ferrite used for a non-reciprocal circuit device contains Fe in an amount lower than the value derived from stoichiometry by 0.5% to 5%, and more preferably by 1% to 3%. The garnet ferrite can exhibit a low insertion loss in a high-frequency band of more than 5 MHz.
摘要:
A yoke main body formed of an upper yoke and a lower yoke accommodates therein a magnetic substrate, a plurality of line conductors, a plurality of capacitor substrates, a magnetic member and a spacer member. The line conductors are connected to one another on one of the surface sides of the magnetic substrate, and each end of the line conductors put one upon another on a main surface side of the magnetic substrate is connected to the capacitor substrate. A gap portion for magnetically insulating the upper yoke and the lower yoke is defined between them.
摘要:
A nonreciprocal circuit element includes a magnetic plate having through holes; center conductors crossing each other at a predetermined angle on a side associated with a first surface of the magnetic plate; and a common electrode disposed on a side associated with a second surface of the magnetic plate and connected to the center conductors via the through holes.
摘要:
A non-reciprocal circuit device includes a magnetic disk; a plurality of central conductors intersecting each other on a surface of the magnetic disk; a plurality of matching capacitors connected to the respective central conductors; and an SmCO-based or AlNiCo-based magnet that is stacked on the magnetic disk, the SmCO-based or AlNiCo-based magnet applying a bias magnetic field to the magnetic disk. The magnetic disk is composed of garnet ferrite represented by any one of the following Formulae (1) to (3): Y3-xGdxFet-2y-zCoySiyAlzO12 (1) Y3-x-uGdxCauFet-2y-u-zCoySiyDuAlzO12 (2) Y3-xGdxFet-2y-v-zCoySiyInvAlzO12 (3)
摘要翻译:不可逆电路装置包括:磁盘; 在所述磁盘的表面上彼此相交的多个中心导体; 连接到各个中心导体的多个匹配电容器; 以及堆叠在磁盘上的基于SmCO或AlNiCo的磁体,基于SmCO或AlNiCo的磁体向磁盘施加偏置磁场。 磁盘由以下公式(1)至(3)中的任何一个表示的石榴石铁氧体组成:<?in-line-formula description =“In-line formula”end =“lead”?> Y < 3-x-x-x-x-x-y-x -i-y-1-x-1-x-1-x (1)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“ 在线公式“end =”lead“?> Y 3-xu i> x sub> x u> (ⅱ)y y y u z z z z O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O 2)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> Y < 3-x Gd x x>> y y In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In (3)<?in-line-formula description =“In-line Formulas”end =“tail”?>
摘要:
There is provided a piezoelectric pump including a piezoelectric vibrator formed by stacking a piezoelectric body on at least one of the front and rear surfaces of a shim made of a conductive metal thin plate, and a housing that makes the peripheral edge of the piezoelectric vibrator liquid-tight to form a pump chamber. An alternating current is applied to between the shim of the piezoelectric vibrator, and the piezoelectric body to vibrate the piezoelectric vibrator, thereby generating a pumping action. A cylindrical bent part is formed at a peripheral edge of the shim of the piezoelectric vibrator, and a liquid-tight seal member is interposed between the cylindrical bent part and the housing. As a result, the piezoelectric pump with a highly-reliable fluid-tight structure around the piezoelectric vibrator is obtained.
摘要:
Two piezoelectric ceramics are equal to each other in the polarization directions thereof. Two electrodes disposed on both surfaces of one of the piezoelectric ceramics are connected to an AC voltage source, while other two electrodes disposed on both surfaces of the other piezoelectric ceramic are connected to another AC voltage source having a phase 180° (2π) different from that of the AC voltage source. The two AC voltage sources are biased to a positive voltage side. Accordingly, the invention provides an electro-mechanical transducer capable of greatly increasing the displacement amount of the film thickness of the electromechanical transducer and of preventing the polarization loss of the electro-mechanical transducer.
摘要:
A pump includes a diaphragm vibrated by a piezoelectric element and a case. An inlet orifice and an outlet orifice are disposed on an outer surface of the case. An inlet path connects the inlet orifice to an inlet and an outlet path connects the outlet orifice to an outlet. At least one portion of the inlet orifice and at least one portion of the outlet orifice are positioned higher than the diaphragm in the case, and portions of the inlet path and the outlet path connecting to the inlet orifice and the outlet orifice are positioned higher than the diaphragm.
摘要:
A primary object of the invention is to provide a production technology for functional polyamic acid microfine particles and functional polyimide microfine particles by which the particle shape, size and size distribution can be freely controlled. The invention is concerned with a process for synthesizing polyamic acid particles having functional groups at least on the surface from a tetracarboxylic anhydride and a diamine compound characterized by its comprising (a) a first step which comprises providing a tetracarboxylic anhydride and a diamine compound at least one of which has functional groups and preparing a first solution containing the tetracarboxylic anhydride and a second solution containing the diamine compound and (b) a second step which comprises mixing the first and second solutions under ultrasonic agitation to thereby precipitate polyamic acid microfine particles from the mixed solution. The invention is further concerned with a process which comprises imidating the above polyamic acid particles to provide polyimide microfine particles.
摘要:
The chain polyene-group containing norbornene compound of the invention is represented by the formula [I]: ##STR1## wherein n is an integer of 1 to 5, R.sup.1 is an alkyl group of 1 to 5 carbon atoms, and R.sup.2 and R.sup.3 are each independently a hydrogen atom or an alkyl group of 1 to 5 carbon atoms.The unsaturated ethylene copolymer of the invention is a random copolymer of 30 to 92% by mol of (i) ethylene units, 6 to 70% by mol of (ii) specific .alpha.-olefin units and 0.1 to 30% by mol of (iii) units derived from the norbornene compound [I], where the molar ratio of (i)/(ii) is in the range of 40/60 to 92/8 and the unit (iii) is represented by the specific formula, and has an intrinsic viscosity [.eta.] of 0.05 to 10 dl/g.The novel unsaturated ethylene copolymer is excellent in weathering resistance, heat resistance and ozone resistance and has a high vulcanizing rate.
摘要:
The purpose of the invention is to provide a resin, which has a high refractive index, excellent heat resistance and moldability, and high transparency, and is useful as a material for configuring optical devices, etc. The invention provides a resin comprising acyl hydrazone bonds and having a number average molecular weight of 500-500,000, wherein the acyl hydrazone bond equivalent is 100-4000.