摘要:
A voltage regulator includes an active control switch, an active sync switch, a driver circuit, and a gate resistor. The active control switch is coupled between an input voltage line and an input of an energy storage device. The active sync switch is coupled to the input of the energy storage device. The driver circuit is coupled to the control and sync switches to alternately drive each of the control and sync switches into a conducting state to produce a regulated voltage at an output of the energy storage device. The gate resistor is coupled in series within a control path of the sync switch. The gate resistor has a resistance value that is tuned to reduce an anticipated dead time between a turn-off time of the sync switch and a turn-on time of the control switch.
摘要:
An antenna for a mobile terminal includes a substrate, a dipole placed on the substrate, a loop placed on the substrate, and a matching circuit on the substrate. The matching circuit comprises at least one of a variable capacitor or a variable inductor. The radiation center of the loop substantially coincides with the radiation center of the dipole.
摘要:
A differential amplifier and a method for generating a computer simulation model thereof are disclosed. The device is thermally stable through adoption of a ballast resistor to a differential structure of a unit transistor pair, such that the differential amplifier prevents heat effect phenomena, such as performance deterioration and device destruction by heating, and, at the same time, improves or maintains other performances, thereby achieving high gain, high efficiency, high linearity, and wide bandwidth characteristics. Therefore, the differential amplifier can be easily designed as undesired effects of parasitic resistor of emitter or via or bonding wire, etc. for the differential amplifier are reduced in a differential mode.
摘要:
A method of fabricating a semiconductor device includes providing a semiconductor substrate having an active surface, thinning the substrate by removing material from a second surface of the substrate opposite the active surface, bonding a metal carrier to the second surface of the thinned substrate, forming a via opening in the thinned substrate, forming a conductive member in the via opening, and patterning the metal carrier bonded to the second surface of the thinned substrate to form a metal pattern.
摘要:
Disclosed herein is a differential amplifier using body-source cross coupling. In a common gate differential amplifier in which common gate amplifiers are implemented in a differential structure, since the bodies of the common gate amplifiers are cross coupled to the sources of the opposite common gate amplifiers, it is possible to increase transconductance due to body effect to improve a gain. Since the potential of the body is equal to that of the source in a DC mode, a breakdown voltage reduction problem is alleviated.
摘要:
A light guide member for guiding light may include a first pattern on a first side of the light guide member, the first pattern may include a plurality of first features extending along a first direction, and a plurality of second features extending along a second direction, wherein the first direction crosses the second direction, the first feature has a first feature size, the second feature has a second feature size, and the first feature size may be less than the second feature size.
摘要:
A mobile terminal is provided that includes a first area having a first conductive surface, a second area having a second conductive surface, the second area separated from the first area, and a feeding point formed between the first conductive surface and the second conductive surface to supply electrical signals to or from the first and the second conductive surfaces. The first and the second conductive surfaces together from an internal antenna
摘要:
The present invention relates to a method of forming a dielectric layer of a flash memory device. In a process of forming a dielectric layer of a flash memory device, the dielectric layer may include a first oxide layer, a high dielectric layer, and a second oxide layer is formed. Accordingly, a leakage current characteristic and reliability of the flash memory device can be improved.
摘要:
Disclosed is a method for producing a transparent and homogenized polymeric sol of a calcium phosphate compound, containing apatite and having excellent wettability and bioactivity, according to a sol-gel synthesis, and a method for coating the polymeric sol on a metal implant, in which the polymeric sol is coated on the metal implant and then heat-treated to form a dense coated layer strongly bonded to the metal implant. The polymeric sol is obtained by process of preparing a calcium salt solution, containing calcium ethoxide dissolved in organic acid, and a phosphate solution, containing triethyl phosphite or triethyl phosphate dissolved in the organic acid, mixing the calcium salt solution with the phosphate solution to produce a mixed solution, and aging the mixed solution.
摘要:
A light guide member for guiding light received from a light source unit, the light source unit illuminating light toward the light guide member, the light guide member may include a plurality of first grooves on a first side of the light guide member, the first grooves extending along a first direction, and a plurality of first projections projecting from surfaces of the first grooves.