Abstract:
Disclosed are an apparatus for measuring radiated power and a method thereof. The apparatus for measuring radiated power includes: a measurement unit configured to receive an RF signal radiated from an antenna of the wireless communication device to generate a radiated power measurement value; a driving unit configured to vertically ascend or descend the measurement unit from the ground; and an operation control unit configured to control the driving unit to ascend the measurement unit to a point at which the antenna is installed and convert the radiated power measurement value into a measurement value on a target point. In accordance with the embodiment of the present invention, even when the antenna of the wireless communication device is inclined to the ground, the radiated power of the wireless communication device can be accurately measured by compensating for the change in the measurement distance due to the inclined angle.
Abstract:
An apparatus measures a 3-Dimensional (3D) shape of an object. The apparatus includes a light emitting unit and a light receiving unit that are arranged to face each other with the object disposed in a space defined therebetween, wherein the light transmitting unit being arranged to scan the object, and the light receiving unit being arranged to sense a shadow of the scanned object formed thereon. The apparatus includes a rotation unit arranged to rotate the light emitting unit and the light receiving unit about a same rotational axis by a preset rotation angle until the rotation is fully made by a desired target angle and a shape restoration unit configured to measure a 3D shape of the object using shadows that are obtained for each preset rotation angle.
Abstract:
Disclosed is a magnetic field shielding apparatus including an energy transmitter configured to generate a magnetic field, an energy receiver configured to receive the magnetic field generated by the energy transmitter, and a magnetic shield configured to shield a leaked magnetic field that is not received by the energy receiver, the magnetic shield including at least one closed region through which the leaked magnetic field passes, and at least one open region including a protrusion through which the leaked magnetic field moves to an inside of the magnetic field shielding apparatus after absorbed into the closed region.
Abstract:
Provided is an apparatus for reducing an electromagnetic wave in a wireless power transmitter using a reducing coil, the apparatus that may cancel external emission of a magnetic field formed at a transmission coil using the reducing coil based on induced electromotive force.
Abstract:
When a feature of the present invention is summarized, disclosed is a frame structure of transmitted and received data in a wireless communication system, including: a plurality of uplink subframes (UL) or downlink subframes (DL) for transmitting and receiving data; and a coexistence synchronization signal preamble for frequency coexistence among asynchronous cells.
Abstract:
Provided is a specific absorption rate (SAR) provision method and a user terminal, the method including receiving a radio signal related to a radio service, determining a use pattern of a user sensed by a user terminal in response to the receiving, extracting a standard SAR for a body part of the user based on the determined use pattern, and determining a measured SAR for the body part of the user based on the extracted standard SAR and a transmission power of the user terminal.
Abstract:
Disclosed is an apparatus for breast cancer detection using a microwave, which decomposes a microwave signal measured on the circumference of a breast for each of a plurality of frequency components and detects a breast cancer based on the microwave signals decomposed for each of the plurality of frequency components to increase accuracy of diagnosis of the breast cancer.
Abstract:
A method for reconstructing a dielectric image using electromagnetic waves, comprising: acquiring a measurement value of the electromagnetic waves; generating a matching system matrixes between the meshes; generating a smoothed dyadic Green's function matrix; generating an electromagnetic wave calculation value; calculating a misfit error between the acquired electromagnetic wave measurement value and the generated electromagnetic wave calculation value, and checking whether a change of the calculated misfit error satisfies a predetermined optimization determination condition; updating dielectric parameters at the meshes; and outputting a reconstructed dielectric image in the image reconstruction region.
Abstract:
An apparatus for measuring a shape of an underwater object includes a laser emitter configured to irradiate a laser on a surface of a measurement target object under water; and a camera configured to capture a laser point generated at the surface of the measurement target object by the laser emitter. Further, the apparatus includes a shape restorer configured to convert a pixel coordinates value of the laser point captured by the camera into an absolute coordinates value to restore a three-dimensional (3D) shape of the measurement target object.
Abstract:
Provided is a wireless power reception apparatus which receives a power from a wireless power transmission apparatus. A wireless power reception apparatus which receives a power from a wireless power transmission apparatus, the wireless power reception apparatus comprising a duty controller configured to control a duty cycle; a power converter configured to convert an effective load resistance according to the duty cycle; a reception resonator configured to receive a power from a transmission coil of the wireless power transmission apparatus, wherein the duty cycle and a current of the transmission coil is adjusted based on a load resistance of the wireless power reception apparatus.