34results about How to "Improving Impedance Performance" patented technology

The invention relates to the technical field of soft ferrite, and discloses a high-frequency and high-impedance poor iron-manganese-zinc ferrite and a preparation method thereof. 2 O 3 , 31~36%MnO, 15~18.5%ZnO and 0.7~2%Co 2 O 3 ; Additives include 10~100ppm SiO 2 , 200~1000ppm CaCO 3 , 100~300ppm Bi 2 O 3 , 100~300ppm ZrO 2 and 100~600ppm TiO 2 . In the present invention, Co is added to the main component 2 O 3 , and reasonably adjust the proportion of each main component, and add additives for modification at the same time, the prepared iron-manganese-zinc ferrite has high magnetic permeability, high saturation magnetic induction intensity and high impedance at high frequency.

The invention relates to the field of non-woven fabrics, and discloses an impregnated non-woven fabric and a manufacturing method thereof, wherein the first fibers include low-melting-point fibers and polyester fibers, and the second fibers include low-melting-point fibers, viscose staple fibers and Polyester fiber, the raw material mass percentage of the first fiber is: low melting point fiber accounts for 5% ~ 20% of the first fiber total amount, polyester fiber accounts for 80% ~ 95% of the first fiber total amount; the second fiber The mass percentage of raw materials is: low melting point fiber accounts for 5%~20% of the total amount of the second fiber, polyester fiber accounts for 80%~95% of the total amount of the second fiber, viscose staple fiber accounts for 5% of the total amount of the second fiber ~15%, the concentration percentage of the polyacrylate is divided into two types: 10% and 25%. In the present invention, the processes of fiber laying, puncturing up and down, heat drying, hot blanching, addition of polyacrylate, drying, and hot blanching are completed. The characteristics of large quantity.

The invention discloses a minimized monopole antenna which is characterized by comprising a dielectric substrate, a radiator, a grounding board and a feeder, wherein the dielectric substrate is rectangular and is provided with a front side and a back side which are opposite to each other, the radiator is printed on the front side, the dielectric substrate is provided with a top edge, a bottom edge, a left edge and a right edge, the radiator is composed of a first radiation part, a second radiation part, a third radiation part, a fourth radiation part, a fifth radiation part, a sixth radiation part, a seventh radiation part, an eighth radiation part, a ninth radiation part and a tenth radiation part, and all the radiation parts are rectangular. The minimized monopole antenna is compact in structure, small in size and capable of meeting performance requirements. Three electric signal paths in different lengths are formed by the radiator, the operation bandwidth can be effectively expanded, and therefore the minimized monopole antenna can be applied to various communication occasions. Furthermore, the wavy edges and hollowed-out structure of the grounding board enable a good impedance function to be realized.

The invention discloses a semi-solidified sheet cutting method which comprises the following steps that: a cutting device and a cutting auxiliary plate which is propped against the cutting device are provided; a second auxiliary side of the cutting auxiliary plate is connected with a first auxiliary side and a third auxiliary side and is vertical to the first auxiliary side; and an included angle between the first and the third auxiliary sides is 10 degrees. After a first side to be cut is propped against the third auxiliary side, the cutting device cuts a rectangular semi-solidified sheet along a direction which is in parallel with a preset direction of the first auxiliary side to form a first cut side. After a second side to be cut is propped against the third auxiliary side, the cutting device cuts the rectangular semi-solidified sheet along the preset direction to form a second cut side. The cutting device cuts the rectangular semi-solidified sheet along the direction which is in parallel with the direction of the first cut side. The cutting device cuts the rectangular semi-solidified sheet along the direction which is in parallel with the direction of the second cut side. Consequently, the impedance property of a circuit board which is manufactured from the semi-solidified sheet can be improved and the signal interference can be reduced.

The invention provides communication equipment, an electric connector assembly and an electric connector. The electric connector assembly comprises a first electric connector, a second electric connector and a dielectric layer, wherein the first electric connector assembly comprises a first insulating main body and a first conductive terminal arranged in the first insulating main body; the second electric connector comprises a second insulating main body and a second conductive terminal arranged on the second insulating main body; the dielectric layer comprises a capacitive dielectric layer or inductive dielectric layer; and the dielectric layer is positioned between the first conductive terminal and the second conductive terminal when the first electric connector is connected with the second electric connector, so that the first conductive terminal is capacitively connected with the second conductive terminal by the capacitive dielectric layer or is inductively connected with the second conductive terminal by the inductive dielectric layer. According to the communication equipment, the electric connector assembly and the electric connector disclosed by the invention, the technical problems of high production cost and poor effect caused by optimization impedance in the prior art are effectively solved, the production cost is reduced and better impedance performances are obtained.

Provided is a separator having excellent tearing strength, denseness, and impedance performance, and an aluminum electrolytic capacitor provided with the separator. The present invention constitutes a separator including beatable regenerated cellulose fibers, the separator having a CSF value X[ml] and tear index Y[mN·m2 / g] within the ranges satisfying the following formulae. The present invention also constitutes an aluminum electrolytic capacitor in which at least one of the separators is used, the capacitor feeing formed by interposing the separator between an anode and a cathode.0≤X≤300  Formula 1 15≤Y≤100  Formula 2 Y≥0.175X−2.5  Formula 3

The invention relates to a low-temperature fast-curing resistance flame-retardant structural adhesive, which is composed of the following raw materials: 10-20 parts of self-synthesized flame-retardant epoxy resin gel, 25-25 parts of tricyclopentyl dimethoxy epoxy resin 35 parts, 3-8 parts of new low-viscosity toughening agent, 20-30 parts of inositol hexa(mercaptopropionate), 4-6 parts of imidazole adduct, 6-33 parts of superfine aluminum hydroxide. The structural adhesive prepared by the invention has the advantages of fast curing speed at low temperature, easy operation of one component, good impedance performance, good flame retardancy, low shrinkage, good bonding strength, etc., and is suitable for various micro-motor inductance coils and related difficult Structural bonding of sticky materials.

The invention belongs to the technical field of machinery, relates to a cable and particularly discloses a shielding type category-6 type cable with water blocking and tensile functions. The cable comprises a cable core, an inner sheath and an outer sheath from inside to outside in sequence, wherein the cable core is filled with water-blocking ointment to form a diaphragm with moisture in a cable embedded ground; and the water-blocking ointment comprises the following components in parts by weight: 20-30 parts of paraffin-base oil, 50-60 parts of naphthenic oil, 5-10 parts of organic thickening agent, 3-6 parts of fumed silica, 3-5 parts of oil separation inhibitor, 3-8 parts of expanded microsphere particles, 1-3 parts of aluminum silicate salt mineral particles, and 0.05-1 parts of antioxidant. By filling the cable core with the water-blocking ointment, the waterproof performance of the cable is greatly improved, the cable density is lowered, and meanwhile, the impedance performance of the cable is effectively improved, so that the service life of the cable is further prolonged.