摘要:
An active magnetic antenna with a ferrite core having a winding is provided, forming a frame magnetic antenna which is connected with a low-noise transistor, to amplify a signal of the frame magnetic antenna. A base of the transistor is connected directly to one contact of the winding, and a second contact of the winding is capable of shifting a voltage of the base of the transistor. The impedance of the frame magnetic antenna is adjusted as a complex conjugate with an impedance of the base of the transistor of the low-noise amplifier, and the winding eliminates its own resonances.
摘要:
An active magnetic antenna with a ferrite core having a winding is provided, forming a frame magnetic antenna which is connected with a low-noise transistor, to amplify a signal of the frame magnetic antenna. A base of the transistor is connected directly to one contact of the winding, and a second contact of the winding is capable of shifting a voltage of the base of the transistor. The impedance of the frame magnetic antenna is adjusted as a complex conjugate with an impedance of the base of the transistor of the low-noise amplifier, and the winding eliminates its own resonances.
摘要:
An apparatus and method for antenna matching according to a position and an angle of a portable terminal is provided. Operations of the portable terminal include, when at least one of a position and an angle of the portable terminal is changed, determining an optimal Tunable Matching Network (TMN) set value corresponding to the position and the angle, and performing antenna matching according to the optimal TMN set value.
摘要:
An antenna device for a portable terminal. The antenna device includes a carrier mounted in a housing of the portable terminal, at least one support extending from the carrier, a main radiator attached onto the carrier and an auxiliary radiator extending from the main radiator and fixed to ends of the supports while being spaced apart from the carrier. Since the antenna device includes the supports extending from the carrier to support the auxiliary radiator extending from the main radiator, the auxiliary radiator can be spaced apart from the carrier and the inner side of the housing of the portable terminal when the antenna device is mounted in the portable terminal. Thus, by reducing interference from a user's body or structures in the housing of the portable terminal, stable radiation performance can be secured. Moreover, the shape of the carrier can be easily changed suitably for a slim portable terminal by supporting the auxiliary support using the supports, whereby the antenna device can be easily installed in a small mounting space in a compact and slim portable terminal and an effective area of the antenna device can be minimized and an antenna gain can be improved in the same size space.
摘要:
A method and device for receiving a digital multimedia broadcasting (DMB) signal in a wireless terminal where an external antenna is detachable from the wireless terminal, an internal antenna is embedded in the wireless terminal, a switch connects one of the external antenna and the internal antenna to a DMB receiver. The DMB receiver receives a DMB signal through one of the external antenna and the internal antenna. A controller controls the switch to connect the internal antenna and transmit the DMB signal to the DMB receiver when the external antenna is detached from the wireless terminal and controls the switch to connect the external antenna to the DMB receiver and transmit the DMB signal to the DMB receiver, when the external antenna is attached to the wireless terminal.
摘要:
A laser irradiation device includes a laser generator for patterning and a laser generator for preheating. A laser induced thermal imaging (LITI) method, includes preparing an acceptor substrate, laminating a donor substrate on the acceptor substrate, and irradiating a laser beam onto a predetermined region of the donor substrate and carrying out transfer using a laser irradiation device having a laser generator for patterning and a laser generator for preheating. Advantageously, a laser beam having high intensity generated by the laser generator for patterning is used to prevent the transfer layer from being degraded, and a laser beam generated by the laser generator for preheating is simultaneously used for preheating so that an edge open failure does not occur and the transfer can be readily carried out even in a portion having a step of the acceptor substrate.
摘要:
An antenna apparatus for a portable terminal which is light, thin, compact, and small. The antenna apparatus preferably includes a main board equipped with a power feeding part for feeding power and a ground surface for grounding the main board and at least one sub-board, each sub-board which has a ground surface and electrically communicates with the main board, wherein the ground surface of each sub-board receives power from the power feeding part of the main board and resonates.
摘要:
A nonvolatile memory device includes a plurality of global word lines, a voltage pump configured to generate a plurality of voltages, a control unit configured to divide the plurality of global word lines into a first group and a second group in response to an input row address and generate control signals, a first selection unit configured to output at least two different voltages that are to be applied to global word lines of the first group, a second selection unit configured to output a voltage that is to be applied to global word lines of the second group, and a third selection unit configured to apply output voltages of the first selection unit to the global word lines of the first group, and apply an output voltage of the second selection unit to the global word lines of the second group.
摘要:
Disclosed is a metal pattern composition including a conductive metal or a conductive metal precursor compound, and a carboxylic acid-amine base ion pair salt.
摘要:
A flat panel display includes a thin film transistor formed on a substrate; a planarization layer formed on the thin film transistor; a first electrode layer formed on the planarization layer and electrically connected with the thin film transistor through the via hole formed in the planarization layer; a pixel definition layer formed on the planarization layer and in which an opening for at least partially exposing the first electrode layer is formed; an adhesive reinforcement layer formed at least between the planarization layer and the pixel definition layer on the top of the planarization layer; an emitting layer formed on the first electrode layer; and a second electrode layer formed on the emitting layer and the pixel definition layer. The flat panel display has an improved adhesive property between a pixel definition layer and a planarization layer, which prevents a chipping phenomenon of the pixel definition layer.