摘要:
Disclosed is an embedded antenna of a wireless device that can be formed by pattern printing and a manufacturing method thereof. The embedded antenna of a wireless device according to the present invention comprises a substrate accommodated in the wireless device; a radiation unit printed on an inner surface of a housing of the wireless device and connected to the substrate, for transmitting and receiving electrical signals; and an insulation unit printed on the radiation unit, for insulating the radiation unit. Here, the radiation unit includes first and second radiators sequentially printed as a pattern on the inner surface of the housing, and the insulation unit includes first and second insulators printed to cover the first and second radiators in order. According to the configuration like this, since the radiation unit and the insulation unit can be formed to have a minimum thickness by pattern printing, the size of the embedded antenna embedded in the wireless device can be minimized.
摘要:
The present invention provides a multiple band antenna, including a first radiation element adapted to resonate at a first resonant frequency band by employing a resonant length, which is reduced by a coupling effect with a neighboring radiation element, a power feed unit coupled to one lower side of the first radiation element, a first inductor coupled in series to the other lower side of the first radiation element, a second radiation element adapted to face the first radiator to thereby obtain the coupling effect, wherein the second radiation element has a predetermined lower portion coupled to the first inductor, a second inductor having one end coupled in series to a predetermined upper portion of the second radiation element, and a third radiation element coupled to the other end of the second inductor, wherein the third radiation element operates as one radiation element together with the second radiation element and resonates at a second frequency band.
摘要:
The present invention relates to A radio frequency (RF) switch and an apparatus including the RF switch. In an aspect of the present invention, an RF switch includes a transmission line having one end connected to an input terminal or an output terminal and the other end connected to a signal line and configured to transfer an RF signal, and a diode disposed between the input terminal and the transmission line or between the output terminal and the transmission line, the diode being configured to control whether or not to transmit the RF signal. In another aspect, an RF switch includes a transmission line having one end connected to an input terminal and the other end connected to an output terminal, and a diode disposed between the input terminal and the transmission line or between the output terminal and the transmission line, the diode being configured to control whether or not to transmit the RF signal. Here, a CRLH (Composite Right/Left-Handed) transmission line is employed as the transmission line.
摘要:
An array antenna system including: a base frame; a plurality of antenna elements which is arranged on the base frame; a driving unit which provides a driving power to each of the plurality of antenna elements when the plurality of antenna elements is moved or transformed on the base frame; a sensor unit which senses a change of a radio wave environment; and a control unit which transmits a driving signal to the driving unit according to a change of the radio wave environment, the change of the radio wave environment being sensed by the sensor unit.
摘要:
There is herein disclosed an interdigital capacitor, an inductor, and an LH transmission line and a coupler using the interdigital capacitor and the inductor. The interdigital capacitor comprises two finger sets which are substantially disposed in parallel with each other. Fingers of each finger set are overlapped at outer edges thereof with each other to thereby generate capacitance. The inductor is formed substantially spirally inside the transmission line, so that it can have a large inductance in a compact shape and can be used in a broad frequency band. The LH transmission line has a broad frequency band in a compact shape, which includes interdigital capacitors connected in series with each other and inductors connected in parallel with each other. In addition, the coupler employing the LH transmission line has an excellent couplability.
摘要:
The present invention relates to an antenna using a complex structure in which dielectric substances having a low dielectric constant and magnetic substances having a high magnetic permeability are arranged vertically and periodically in order to improve the gain, efficiency, and bandwidth of the antenna while maintaining a small size which is an advantage of a conventional antenna using dielectric substances having a high dielectric constant. The present invention provides the antenna using a complex structure having a vertical and periodic structure of dielectric substances and magnetic substances, comprising a substrate and a radiation patch formed on the substrate. The substrate includes a plurality of layers. Each of the layers has the dielectric substances and the magnetic substances of a bar shape alternately arranged therein and has the dielectric substances and the magnetic substances alternately laminated thereon even in a height direction.
摘要:
A multiband and broadband antenna using metamaterials and a communication apparatus comprising same are provided. According to one embodiment of the present invention, provided is a multiband and broadband antenna comprising: a feeder unit formed in at least a portion of a carrier; and at least one double negative (DNG) unit cell and at least one epsilon negative (ENG) unit cell which are formed in the carrier, fed by the feeder unit, and serve as a composite right/left handed transmission line (CRLH-TL).
摘要:
A multiband and broadband antenna using metamaterials and a communication apparatus comprising same are provided. According to one embodiment of the present invention, provided is a multiband and broadband antenna, comprising: a feeder unit formed in at least a portion of a carrier; and at least one double negative (DNG) unit cell which is formed in the carrier, fed by the feeder unit, and serves as a composite right/left handed transmission line (CRLH-TL).
摘要:
The present invention provides an RF switch, including a diode adapted to operate as a switch when a control current is applied thereto, a first CRLH transmission line of a Φ degree phase, which provides one signal transfer path from a terminal 1 to a terminal 2 when the diode is shorted due to application of a control current, and a second CRLH transmission line of a Φ-180 degree phase, which has a 180 degree phase difference from that of the first CRLH transmission line and provides the other signal transfer path from the terminal 1 to the terminal 2. The present invention provides an RF switch having a broad-band characteristic by employing a CRLH transmission line. More specifically, the present invention provides a ring-shaped RF switch, which has a broad-band characteristic and can also be miniaturized at a low frequency band, by employing a CRLH transmission line having a 180 degree phase difference in a broad band.
摘要:
There is provided an antenna having a spiral-shaped loading formed on the ground plane, in which a resonant frequency is lowered as the reactance component of a CRLH-TL structure is adjusted.