Patent application number | Description | Published |
20090201220 | HIGH IMPEDANCE SURFACE STRUCTURE USING ARTIFICIAL MAGNETIC CONDUCTOR, AND ANTENNA AND ELECTROMAGNETIC DEVICE USING THE SAME STRUCTURE - Provided are a high impedance surface structure using an AMC (artificial magnetic conductor) and an antenna and an electromagnetic device using the high impedance surface structure. The high impedance surface structure includes: a ground layer formed of a first conductor layer; a first dielectric layer formed on the ground layer; and an HIS (high impedance surface) layer formed of second conductor layers and a second dielectric layer on the first dielectric layer, wherein the second conductor layers are interdigitated with one another and vias connecting the second conductor layers to the ground layer are not formed. | 08-13-2009 |
20100001080 | TAG ANTENNA STRUCTURE FOR WIRELESS IDENTIFICATION AND WIRELESS IDENTIFICATION SYSTEM USING THE TAG ANTENNA STRUCTURE - Provided are a tag antenna for wireless identification and a wireless identification system including the tag antenna. The tag antenna includes: a substrate formed of a first dielectric; a conductive ground layer formed underneath the substrate; an AMC layer formed on the substrate; and a wireless identification chip adhered onto the AMC layer. | 01-07-2010 |
20100007569 | DIPOLE TAG ANTENNA STRUCTURE MOUNTABLE ON METALLIC OBJECTS USING ARTIFICIAL MAGNETIC CONDUCTOR FOR WIRELESS IDENTIFICATION AND WIRELESS IDENTIFICATION SYSTEM USING THE DIPOLE TAG ANTENNA STRUCTURE - Provided are a dipole tag antenna using an artificial magnetic conductor (AMC) for wireless identification and a wireless identification system using the dipole tag antenna. The dipole tag antenna includes: a substrate formed of a first dielectric material; a conductive ground layer formed underneath the substrate; an AMC layer formed on the substrate; the dipole tag antenna mounted on the AMC layer and comprising a wireless identification chip; and the AMC directly mounted on a conductor. | 01-14-2010 |
20100033178 | METHOD AND APPARATUS FOR DETECTING OR TRANSMITTING MAGNETIC FIELD USING DETACHABLE MAGNETIC RESONATOR - An apparatus for detecting a magnetic field includes a coil type magnetic resonator having a resonant frequency with respect to a magnetic field varying at a particular frequency and a loop antenna inductively coupled to the coil type magnetic resonator. | 02-11-2010 |
20100127707 | WEARABLE MAGNETIC RESONATOR FOR MRI RESOLUTION IMPROVEMENT, AND APPLICATION DEVICE INCLUDING THE SAME - Magnetic resonance imaging (MRI) devices detect a magnetic field having a particular frequency induced by hydrogen nuclei included in a human body and convert the detected magnetic field into two- or three-dimensional images, thereby visualizing the internal structure of the human body without causing any harm to the human body. The higher the resolution of an MRI technique, the more accurate a diagnosis can be obtained. Thus, various methods are introduced to improve resolutions. For example, a wearable magnetic resonator and an application device including the wearable magnetic resonator are provided. The wearable magnetic resonator is flexible and used to improve MRI resolution by amplifying MR signals while being attached to a human body to amplify MR signals when MRI is performed. The wearable magnetic resonator includes the following: a dielectric thin film that is flexible; and a conductor thin film that is disposed to have a split ring resonator (SRR) structure on the dielectric thin film and is flexible, wherein the wearable magnetic resonator includes an inductance component and a capacitance component, and the wearable magnetic resonator amplifies a magnetic field by resonating at a predetermined frequency, thereby improving a MRI resolution. | 05-27-2010 |
20100259345 | METAMATERIAL STRUCTURE HAVING NEGATIVE PERMITTIVITY, NEGATIVE PERMEABILITY, AND NEGATIVE REFRACTIVITY - Provided is an unlimited single-layer metamaterial structure having negative permittivity and negative permeability in a frequency bandwidth desired by a user. The metamaterial structure includes: a dielectric having a single layer structure having a permittivity or a multi-layer structure in which at least one layer has a different permittivity; and a single conductor disposed in the dielectric, wherein the metamaterial structure has a permittivity, a permeability, and a refractivity that have 0 or a negative value in a predetermined frequency band. | 10-14-2010 |
20100277374 | ANTENNA HAVING METAMATERIAL SUPERSTRATE AND PROVIDING GAIN IMPROVEMENT AND BEAMFORMING TOGETHER - Provided is antenna having metamaterial and providing gain improvement and beamforming together. The antenna includes a resonator and a superstrate. A feed antenna is disposed in the resonator. The superstrate includes a conductive pattern on the resonator for improving gain and beamforming of the feed antenna. | 11-04-2010 |
20110175779 | CONDUCTIVE STRUCTURE FOR HIGH GAIN ANTENNA AND ANTENNA - Provided are a conductive structure for a high gain antenna and an antenna. A plurality of conductive patterns (512) of the conductive structure are formed on top and bottom surfaces of a dielectric substrate (511) positioned above the antenna and separated from an antenna body (500). A conductive upper structure of the antenna (510) is positioned above the antenna opposite to a ground plane (530) to which the antenna body is fed, separated from the antenna body. A conductive unit structure comprising a plurality of conductive patterns (512) formed on top and bottom surfaces of the dielectric substrate (511) is arranged in a plurality of layers. The conductive structure for a high gain antenna and the antenna can be readily produced by using low cost printed circuit board (PCB) technology, and a gain of the antenna can be increased regardless of a resonance distance between the ground plane of the antenna and the conductive structure disposed above the antenna. | 07-21-2011 |
20110199273 | PLANAR META-MATERIAL HAVING NEGATIVE PERMITTIVITY, NEGATIVE PERMEABILITY, AND NEGATIVE REFRACTIVE INDEX, PLANAR META-MATERIAL STRUCTURE INCLUDING THE PLANAR META-MATERIAL, AND ANTENNA SYSTEM INCLUDING THE PLANAR META-MATERIAL STRUCTURE - Provided is a planar meta-material ( | 08-18-2011 |