Abstract:
하이퍼렌즈의 구조를 개선함으로써 보려는 물체를 하이퍼렌즈의 전면에 반파장 이내의 거리로 용이하게 밀착시킬 수 있는 돌출형 하이퍼렌즈 및 이의 제조방법이 개시된다. 주렌즈층은 전면의 형상이 오목하며, 기판층은 주렌즈층을 지지한다. 주렌즈층의 전면 중앙부는 기판층의 표면에 비해 돌출되게 위치된다. 따라서, 주렌즈층을 보고자 하는 미세 물체에 반파장 이내로 용이하게 밀착 가능해진다. 이에 따라, 파장보다 작은 분해능의 상을 얻는 것이 가능해진다. 또한, 물체에서 산란되는 소멸파를 이용하는데 있어 사용자에게 큰 작업 편의성을 제공한다. 하이퍼렌즈, 소멸파, 진행파, 분해능
Abstract:
PURPOSE: A multiband integrated antenna device is provided to enhance effectiveness of telecommunication infrastructure operation by adding a frequency reconfiguration circuit which selectively offers frequency. CONSTITUTION: A first antenna device comprises a first feeder(104) and a first feeding point(103). The first antenna device is driven in a first frequency band. A second antenna device comprises a second feeder(204) and a second feeding point(203). The second antenna device is driven in a second frequency band. A second radiation device is located within a similarity cavity formed in the center area of a first radiation device. A third radiation device is located at the upper side of the first radiation device.
Abstract:
본 발명은 CRLH 구조 공진기 기반의 대역 통과 필터 및 이를 이용한 듀플렉서에 관한 것이다. 본 발명의 일 실시예에 의한 CRLH 구조 공진기 기반의 대역 통과 필터는 2 이상의 CRLH 구조 공진기들이 용량성 결합된 공진기 결합 선로 및 공진기 결합 선로와 병렬 연결되는 분기 선로를 포함하고, 분기 선로는 통과 대역 주변에 전송 영점을 발생시키는 것을 특징으로 한다. 본 발명에 의하면, 전송 영점을 발생시키는 분기 선로를 통해 우수한 스커트 특성을 가지는 CRLH 구조 공진기 기반의 대역 통과 필터를 구현할 수 있는 장점이 있다.
Abstract:
본 발명은 이중 대역 전력 증폭기에 관한 것으로, 보다 구체적으로 전계 효과 트랜지스터의 출력단에 인터디지털 캐패시터를 이용한 전송 선로를 두어 이중 대역의 중심 주파수에 해당하는 고조파 성분을 조절하는 이중 대역 전력 증폭기에 관한 것이다. 본 발명의 일 실시 예에 따른 이중 대역 전력 증폭기는, 제 1 중심 주파수를 출력하는 제 1 정합 회로; 제 2 중심 주파수를 출력하는 제 2 정합 회로; 상기 제 1 정합 회로와 제 2 정합 회로를 정합하는 전계 효과 트랜지스터; 및 상기 전계 효과 트랜지스터의 출력단에 직렬로 연결되는 인터디지털 전송선로를 포함한다.
Abstract:
PURPOSE: An array circularly polarized antenna and method for manufacturing the same in a wireless communication system are provided to simplify the structure of the array circularly polarized antenna with a high gain. CONSTITUTION: An electricity supplying antenna(330) is located on a dielectric substrate(340) of a ground substrate. A unit antenna arranges a plurality of conductive structures(320) on a superstrate(310) in the same direction. The superstrate is separate from the ground substrate. An array antenna successively arranges the unit antennas to have a fixed phase difference. If the electricity supplying antenna radiates a linearly polarized wave, the conductive structures, the unit antenna, and the array antenna radiate a circularly polarized wave.
Abstract:
PURPOSE: A small antenna using an SRR structure in a wireless communication system and manufacturing method thereof are provided to increase antenna efficiency. CONSTITUTION: A first radiating part(310) of a ring shape is located on a dielectric substrate of a dielectric medium. An electricity supply part is located on the dielectric substrate. The electricity supply part supplies electricity to a first radiating part. A second radiating part(320) of a ring shape is located in the lower part of the dielectric substrate. A via(330) penetrates the dielectric substrate and connects the first and second radiating parts. A ground part is located in the lower part of the dielectric substrate. The ground part grounds the first and second radiating parts. A metal line part is located in the lower part of the dielectric substrate. The metal line part connects the second radiating part with the ground part.
Abstract:
PURPOSE: A conductive structure and an antenna thereof are provided to reduce the spacious volume of antenna by increasing the gain of antenna regardless of resonated distance between the ground plane of antenna and a conductive structure. CONSTITUTION: An antenna comprises an antenna body(500), a conductive structure(510), a dielectric(520), and a ground plane(530). The antenna body is arranged in the upper side of dielectric. The ground plane is formed in the lower-part of dielectric. The conductive structure is arranged above the antenna body. The conductive structure is made of a plurality of conductivity unit structures. The conductivity unit structure comprises a dielectric substrate and a conductive pattern. The conductive pattern is formed in upper side and lower side of a dielectric substrate.
Abstract:
PURPOSE: A method and an apparatus for detecting or transmitting magnetic field using a detachable magnetic resonator are provided to allow a user to detect high narrow band frequency magnetic field and transmit it. CONSTITUTION: An apparatus for detecting or transmitting magnetic field using a detachable magnetic resonator comprises a magnetic resonance(210) and a loop antenna(520) of a coil type. The magnetic resonator has a resonant frequency corresponding to the change of a specific magnetic frequency. The loop antenna is inductively combined with the magnetic resonator. The loop antenna has a wideband characteristic. The magnetic resonator is comprised of the non-magnetic material.
Abstract:
A tag antenna for RFID(Radio Frequency IDentification) using an artificial magnetic conductor is provided to implement direct attachment on a conductor by positioning a feeder of a loop type on an artificial magnetic conductor. A tag antenna for an RFID using an artificial magnetic conductor includes a first dielectric layer, an AMC(Adaptive Modulation and Coding) pattern, a second dielectric layer, and a feeder of a loop type. The AMC pattern is located on an upper part of the first dielectric layer. A plurality of patterns having the same size are arranged to have a predetermined interval. The second dielectric layer is located on an upper part of the AMC pattern. The feeder of the loop type is located on an upper part of the second dielectric layer. An RFID chip is inserted into a center of the feeder of the loop type. The feeder of the loop type has a first penetration hole(201), a second penetration hole(202), and a bending groove(203). The first penetration hole has a protrusion on both sides opposite to a penetration hole of a central part. The second penetration hole is generated in parallel on an outer part of both sides opposite to the penetration hole. The bending groove is formed on an outer plane of both planes in perpendicular to the protrusion.
Abstract:
A dipole tag antenna mounted on metallic objects using an artificial magnetic conductor for wireless identification and a wireless identification system using the same are provided to adjust a frequency band and an identification distance of the dipole tag antenna. A dipole tag antenna(200) mounted on metallic objects using an artificial magnetic conductor(100) for wireless identification includes a substrate(140), a conductive ground layer, an artificial magnetic conductor layer(160), and a dipole tag antenna. The substrate is made of a first dielectric material. The conductive ground layer is formed in a lower part of the substrate. The artificial magnetic conductor layer is formed on the substrate. The dipole tag antenna is mounted on the artificial magnetic conductor layer including a wireless identification chip(210).