Abstract:
PURPOSE: An apparatus for analyzing interference of a wireless communication device and an interference analysis system using the same and a method thereof are provided to extract an interference signal reflecting hearing sensitivity according to each frequency in the audible frequency band, and to measure the amplitude of a signal per frequency as to the extracted interference signal. CONSTITUTION: A frequency detector (402) detects a frequency signal of low frequency band generated in a wireless communication device. A band pass filter (404) extracts an interference signal reflecting hearing sensitivity according to each frequency of the audible frequency band of the detected frequency signal. A volt meter (406) measures the amplitude of a signal per frequency as to the extracted interference signal. An interference evaluation block (408) evaluates the existence of the interference influence to an acoustic device by the wireless communication device through comparison between the interference level amplitude of the measured interference signal and a preestablished interference reference value. [Reference numerals] (402) Frequency detector; (404) Band pass filter; (406) Volt meter; (408) Interference evaluation block
Abstract:
The present invention relates to a transverse electromagnetic (TEM) cell which comprises an untapered region part configured to have a straight-line structure in which a cross-sectional area of an internal space is constantly maintained; and tapered region parts coupled between both sides of the untapered region part and a connection part and each configured to have a tapered structure in which the cross-sectional area of the internal space is reduced toward the connection part. According to the present invention, a horizontal length of the tapered region part and a horizontal length of the untapered region part are determined in such a way as to reduce an electromagnetic field component in a direction vertical to a cross section of the untapered region part, thereby improving electromagnetic susceptibility evaluation performance of the TEM cell.
Abstract:
The present invention relates to a device for calculating electromagnetic wave from an electronic device. The present invention acquires electromagnetic measurement value from a flat surface a few centimeters away from an electronic device which is a subject to output electromagnetic wave using an electromagnetic wave scanner and accurately computes electromagnetic wave at a certain point which is tens of centimeters or a few meters away from the electronic device using the electromagnetic wave measurement value acquired from the adjacent flat surface. In other words, without using a huge reflective chamber, electromagnetic wave at a certain point which is apart from an electronic device can be accurately computed using a relatively small electromagnetic wave scanner. Also, if an electronic scanner is installed at a development and production site, product transfer between the development and production site and reflective chamber is not required, so the time required for electronic device development and production can be reduced and price of the product is also be reduced, thereby improving the price competitiveness.
Abstract:
PURPOSE: A communication device and a method thereof are provided to wirelessly transmit energy which does not influence a broadcasting communication service. CONSTITUTION: A communication device which is able to wirelessly transmit energy comprises a signal separator (100), an energy regenerator (200), and a communication unit (300). The signal separator separates a signal from the signal of an energy frequency band and the signal of a communication frequency band and includes a band selector (110) and a reflective wave separator (120). The band selector transmits the signal of the energy frequency band to the energy regenerator and reflects the signal of the other band. The reflective wave separator transmits a signal reflected from the band selector to the communication unit. The energy reproduction unit supplies the energy to a load by receiving the signal of the energy frequency band. The communication unit executes communication by receiving the signal of the communication frequency band. [Reference numerals] (110) Band selector; (120) Reflective wave separator; (200) Energy regenerator; (300) Communication unit; (AA,BB) RF signal
Abstract:
본발명은전자기기의전자파산출에있어서, 전자파스캐너를활용하여전자파산출대상이되는전자기기로부터수 센티미터또는수십센티미터의근접한평면에서전자파측정값을획득한후, 근접한평면에서획득된전자파측정값을이용하여전자기기로부터수십센티미터또는수 미터이격된특정지점의전자파를정확하게산출할수 있다. 즉, 대형반무반사실을보유하고있지않더라도상대적으로소형인전자파스캐너를활용하여전자기기로부터이격된특정지점의전자파를정확하게산출할 수있다. 또한, 개발및 생산현장에전자파스캐너를설치하면개발및 생산현장과대형반무반사실간의제품이동이불필요하므로전자기기제품개발및 생산시간을단축하고제품단가를낮출수 있고, 이에따라가격경쟁력을향상시킬수 있다.