摘要:
A balun transformer includes a first conductive pattern having one end provided as an input/output port of an unbalanced signal, a second conductive pattern electromagnetically coupled to the first conductive pattern and having both ends provided as input/output ports of a balanced signal, and a first variable capacitor connected between a ground part and a middle part of an electrical length of the second conductive pattern.
摘要:
Disclosed herein is a wireless power transmission/reception apparatus. The wireless power transmission/reception apparatus includes a wireless power transmission unit and a wireless power reception unit. The wireless power transmission unit receives power, generates a wireless power signal to be wirelessly transmitted, wirelessly transmits the generated wireless power signal in a magnetic resonance manner, receives a returned wireless power signal and detects the number of power consumption devices, and wirelessly transmits a wireless power signal using resonance frequency appropriate for the number of power consumption devices.
摘要:
Disclosed herein is there is provided an apparatus for transmitting and receiving wireless energy using meta-material structures having a negative refractive index. The apparatus includes a wireless energy transmission unit and a wireless energy reception unit. The wireless energy transmission unit generates wireless energy to be wirelessly transmitted, and then wirelessly transmits wireless energy, which is normally propagated radially, using a magnetic resonance method while concentrating the wireless energy at a single point. The wireless energy reception unit wirelessly receives the wireless energy using the magnetic resonance method while concentrating the wireless energy at a single point.
摘要:
Disclosed herein is a wireless energy transmission structure, which includes a printed circuit board, a disk section, and a wire section. The printed circuit board is formed in a ring type, the disk section is constituted by a first conductive plate and a second conductive plate formed on portions of the printed circuit board corresponding to each other to be spaced by a predetermined gap and a dielectric material inserted between the first conductive plate and the second conductive plate, and the wire section is constituted by a plurality of meta cells having a meta material structure, which are repetitively formed to surround the exterior and interior of the printed circuit board and a transmission line connected to each of the first conductive plate and the second conductive plate and surround the plurality of meta cells.
摘要:
Disclosed are a wireless power transmitter capable of transmitting power wirelessly according to an impedance of an output side and a wireless power transceiver. There are provided a wireless power transmitter and a wireless power transceiver including: a wireless power transmitting unit converting input power into a preset transmission power and transmitting the converted input power wirelessly; and a controlling unit controlling a transmission of the transmission power according to a level of output impedance of the transmission power output from the wireless power transmitting unit.
摘要:
Disclosed herein is a wireless power transmission/reception apparatus and method having a communication function.The wireless power transmission/reception apparatus includes a wireless power transmission device and wireless power transmission devices. The wireless power transmission device receives a returned wireless power signal, detects the number of power consumption devices, modulates pieces of ID data, each including ID of a corresponding power consumption device, transmits the modulated ID data, receives returned ID data, and determines suitableness of the power consumption devices. Each of the wireless power reception devices returns a remaining wireless power signal which is not received among wireless power signals from the wireless power transmission device, and temporarily stops a power consumption device when an ID of the received ID data is an ID of a power consumption device connected thereto, thus returning ID data which will be subsequently received to the wireless power transmission device.
摘要:
The wireless charging apparatus according to the preferred embodiment of the present invention includes a control unit performing a general control of a wireless charging process; a driving unit connected to the control unit to generate a wireless power signal to be transmitted according to the control of the control unit; a transmission coil unit connected to the driving unit as a coil structure in a dumbbel form and transmitting wireless power according to the wireless power signal, the turn loop having a major-axis side of which one side is longer than the other side and at least one area is formed in a form depressed inwardly; and a sensing unit connected between the transmission coil unit and the control unit to detect whether the wireless charging receiver is positioned corresponding to the transmission coil unit and transfer the detected state to the control unit.
摘要:
The invention provides a transmitter using a chaotic signal which turns on/off a supply voltage of a chaotic signal generator in accordance with a transmitted digital data signal, without requiring a separate modulator for combining the chaotic signal and the digital data signal. The transmitter uses a chaotic signal for modulating a predetermined digital data to transmit. A chaotic signal generator turns on to generate the chaotic signal when a supply voltage is supplied and turns off when the supply voltage is cut off. A supply voltage switch supplies/cuts off the supply voltage to/from the chaotic signal generator in accordance with the digital data. Further, the supply voltage of the chaotic signal generator is supplied/cut off in accordance with the digital data so that an output from the chaotic signal generator is a modulated signal of the digital data.
摘要:
A chaotic wireless communication apparatus for transmitting/receiving data based on a chaotic signal is provided. The apparatus includes a chaotic Radio Frequency (RF) processing means and a digital modem. The chaotic RF processing means includes a chaotic RF receiving unit for extracting a spreading digital signal from an RF signal using a chaotic signal as a carrier signal, and a chaotic RF transmitting unit for transforming the spreading digital signal into the chaotic signal. The digital modem a digital demodulating unit for dispreading spreading digital data extracted from the chaotic RF receiving unit and creating information data to be received, and a digital demodulating unit for spreading information data to be transmitted and creating the spreading digital signal.
摘要:
Disclosed is a wireless energy transmission structure which includes a disc part including a first conductor plate and a second conductor plate which are spaced to face each other and a dielectric material inserted between the first conductor plate and the second conductor plate, and generating an electric field between the first conductor plate and the second conductor plate; and a ring-shaped wire part one end of which is connected to the first conductor plate and the other end of which is connected to the second conductor plate, and having a meta structure in which a plurality of meta cells is repetitively arranged so as to induce a magnetic field using the electric field, so that the wireless energy transmission structure is reduced in size and is improved in transmission distance and transmission efficiency.