Patent application number | Description | Published |
20100177014 | STRUCTURE OF A SQUARE QUADRIFILAR HELICAL ANTENNA - Disclosed herein is the structure of a Square Quadrifilar Helical antenna (S-QHA). The structure of the S-QHA includes a square column, four radiation elements, and a feed network. The four radiation elements are formed on the square column. The feed network is disposed at the top or bottom of the square column, and feeds signals to the radiation elements at a phase difference of 90 degrees in a clockwise or counterclockwise direction. As a result, the S-QHA according to the present invention can receive circularly polarized signals. | 07-15-2010 |
20100295633 | ELECTROMAGNETIC BANDGAP PATTERN STRUCTURE, METHOD OF MANUFACTURING THE SAME, AND SECURITY PRODUCT USING THE SAME - Disclosed herein is an electromagnetic bandgap (EBG) pattern structure, including: a nonconductive substrate; and a pattern assembly formed on the substrate and including regularly arranged closed-loop patterns and open-loop patterns both of which are made of a conductive material. The EBG pattern structure is advantageous in that it can be used to manufacture new security products by applying its frequency characteristics to securities or IDs and in that it can be variously used in security technologies for preventing forgery and alteration because various security codes can be created by adjusting the variables of its EBG pattern. | 11-25-2010 |
20120162009 | BEAMFORMING ARRAY ANTENNA CONTROL SYSTEM AND METHOD FOR BEAMFORMING USING THE SAME - A control system connected to a plurality of array antenna performs beamforming. In order to perform the beamforming, the control system receives response beams inputting to a first antenna group predetermined from a plurality of array antenna in response to radiate beams and decides a sector having comparatively stronger intensity. And the control system receives response beams inputting to a second antenna group, decides a plurality of beam levels and decides a final beam pair among the plurality of the decided beam levels. | 06-28-2012 |
20130130621 | METHOD AND APPARATUS FOR DATA COMMUNICATION IN WIRELESS POWER TRANSMISSION - A method and apparatus for data communication in wireless power transmission are provided. A wireless power transmitter includes a resonance antenna configured to wirelessly transmit a power to a wireless power receiver, and receive a signal from the wireless power receiver, the signal including a sub-carrier. The wireless power transmitter further includes a controller configured to receive the signal from the resonance antenna, and receive data from the wireless power receiver based on the sub-carrier. | 05-23-2013 |
20130154760 | BONDING WIRE IMPEDANCE MATCHING CIRCUIT - An impedance matching circuit is provided. The present impedance matching circuit is able to match impedance using a transformer which is arranged inside a dielectric substrate and arranged to overlap with a bonding pad area and an end of a transmission line, thereby enabling transmitting signals at a desired frequency with a minimum insertion loss without using a very thin transmission line which is several to dozens of μm wide or specially designed antennas in order to compensate for inductance. Thus, the present impedance matching circuit may be applied to various millimeter bands. | 06-20-2013 |
20140152516 | ANTENNA FOR WIRELESS POWER TRANSMISSION AND NEAR FIELD COMMUNICATION - A dual antenna for wireless communication transmission (WPT) and near field communication (NFC) includes a loop antenna, and a dual loop antenna disposed at an inside and an outside of the loop antenna. | 06-05-2014 |
20150229034 | BEAMFORMING ARRAY ANTENNA CONTROL SYSTEM AND METHOD FOR BEAMFORMING USING THE SAME - A control system connected to a plurality of array antenna performs beamforming. The control system requests a first antenna group predetermined from a plurality of array antenna to radiate beams to a plurality of predetermined sectors. The control system receives response beams inputting to the first antenna group in response to the radiated beams, decides a sector having comparatively stronger intensity among response beams for a plurality of sectors as an optimized sector, and requests a second antenna group to radiate beams to a plurality of sectors included in the optimized sector. The control system receives response beams inputting to the second antenna group, decides a sector related to a beam having comparatively stronger intensity among response beams for the plurality of sectors in the optimized sector, decides a plurality of beam levels, and decides a final beam pair among the plurality of the decided beam levels. | 08-13-2015 |
20150318610 | APPARATUS AND METHOD FOR ADJUSTING BEAM PATTERN IN COMMUNICATION SYSTEM SUPPORTING BEAM DIVISION MULTIPILE ACCESS SCHEME - A method for adjusting a beam pattern in a beam pattern adjusting apparatus in a communication system supporting a Beam Division Multiple Access (BDMA) scheme is provided. The method includes determining whether a Voltage Standing Wave Ratio (VSWR) value for each antenna included in an antenna array included in the beam pattern adjusting apparatus is greater than or equal to a threshold VSWR value, if it is determined that an antenna of the antenna array has a VSWR value that is greater than or equal to the threshold VSWR, detecting whether each of the antenna elements is operable, and if it is determined that at least one of the antennas is inoperable, adjusting a beam pattern of at least one of the antennas that is operable. | 11-05-2015 |