摘要:
The invention relates to a high-dielectric constant metal/ceramic/polymer composite material and a method for producing an embedded capacitor. As ceramic particles having a relatively small size are bound to the surface of metal particles having a relatively large size by mixing, the occurrence of percolation can be prevented without coating the metal particles, and at the same time, the capacitance of an embedded capacitor can be increased. In addition, a process for coating the surface of the metal particles can be omitted, thus contributing to the simplification of the overall preparation procedure.
摘要:
Disclosed herein is a composite dielectric composition having a small variation of capacitance with temperature, comprising a combination of a polymer matrix exhibiting a positive or negative variation of capacitance with temperature and a ceramic filler exhibiting a negative or positive variation of capacitance with temperature which is reciprocal to that of the polymer matrix; and a signal-matching embedded capacitor prepared by using the same composition. Particularly, the present invention provides a composite dielectric composition comprising a polymer matrix exhibiting a positive or negative variation of capacitance with temperature and a ceramic filler exhibiting a variation of capacitance which is reciprocal to that of the polymer matrix; and a signal-matching embedded capacitor formed of the same composition and having a variation of capacitance with temperature, Δ C/C×100(%), of not more than 5%. The composite dielectric composition of the present invention can be used in preparation of the signal-matching embedded capacitor due to a small variation of capacitance with temperature.
摘要:
The present invention relates to a method of fabricating a printed circuit board having embedded multi-layer passive devices, and particularly, to a method of fabricating a printed circuit board having an embedded multi-layer capacitor, in which a capacitor is formed to have multiple layers in the PCB to increase capacitance.
摘要:
A method of manufacturing a thin film capacitor includes steps of: performing recrystallization heat treatment on a metal foil; forming a dielectric layer on a top surface of the recrystallized metal foil; heat treating the metal foil and the dielectric layer; and forming an upper electrode on a top surface of the heat-treated dielectric layer. The recrystallization heat treatment prevents the oxidation of a metal foil, by which a dielectric layer can be heat treated at a high temperature, thereby improving electric properties of a thin film capacitor and the reliability of a product.
摘要:
A multi-input multi-frequency synthesizing apparatus and method for a multi-band radio frequency (RF) receiver. The frequency synthesizing apparatus may generate an output from a greater number of high frequency signals by using one multi-input single side band (SSB) mixer. The multi-input SSB mixer may generate a signal whose frequency is an addition of frequencies of two signals selected from a signal selection control unit, or a difference of frequencies therebetween. According to a circuit configuration of the multi-input SSB mixer, the signal selection control unit may select more than two signals.
摘要:
Disclosed is a wideband polyphase filter using variable resistors and variable capacitors for correcting a phase and a frequency to be suitable for wideband communication. There is provided a wideband polyphase filter including: a variable resistor in which resistance varies; and a variable capacitor in which capacitance varies, wherein the variable resistor and the variable capacitor correct a wideband frequency and a phase, converts a predetermined differential input into a quadrature signal and outputs the converted quadrature signal. A wideband polyphase filter which varies resistance and capacitance to correct a phase and frequency, and also may obtain a wideband frequency range may be provided.
摘要:
The present invention relates to an III-nitride semiconductor light emitting device in which a single layer or plural layers made of SixCyNz(x≧0, y≧0, x+y>0, z>0) are inserted into or under an active layer and it is directed to a technology in which Al(x)Ga(y)In(1-x-y)N (0≦x≦1, 0≦y≦1, 0≦x+y≦1) of the hexagonal structure and SixCyNz(x≧0, y≧0, x+y>0, z>0) of the hexagonal structure are combined together in view of the properties of the SixCyNz(x≧0, y≧0, x+y>0, z>0) material.
摘要翻译:本发明涉及一种III族氮化物半导体发光器件,其中单层或多层由Si x Si x N z N z (x> = 0,y> = 0,x + y> 0,z> 0)插入到有源层中或下面,并且涉及一种技术,其中Al(x)Ga(y)In xy)N(0 <= x <=1,0,0≤y≤1,0<= x + y <= 1)的六方结构和Si x x C y 根据Si = 0,y> = 0,x + y> 0,z> 0) (x> = 0,y> = 0,x + y> 0,z> 0)材料。
摘要:
The invention relates to pharmaceutical compositions comprising gastrointestinal proliferative factor (GIPF) polynucleotides and polypeptides. The invention further relates to the therapeutic use of GIPF to prevent or treat conditions or disorders associated with the degeneration of the epithelial mucosa.
摘要:
A Kimchi refrigerator that emits light into a storage compartment, in which Kimchi is stored, to improve taste of the Kimchi and a control method of the same are disclosed. The Kimchi refrigerator according to the present invention includes an light emitting unit to emit light into the storage compartment. The light is emitted to Kimchi, whereby the taste of the Kimchi is improved.
摘要:
A frequency synthesizing apparatus and method for a multi-band radio frequency (RF) receiver is provided. The frequency synthesizing apparatus includes a simple circuit configuration with a single SSB mixer and thus, may synthesize six high frequency signals. Signals to be inputted into the SSB mixer include a first signal and a second signal. The first signal is generated based on a VCO and a PPF. Also, the second signal is selected from a plurality of frequency divided signals which are generated by dividing a signal generated in the VCO via a plurality of dividers.