Abstract:
PURPOSE: A high efficient broadband micro-strip patch alignment antenna is provided to improve an electromagnetic coupling characteristic between a radiative patch and a feeder of a micro-strip patch antenna for linearly polarized wave or circular polarized wave. CONSTITUTION: A ground conductor layer(7) is formed on an entire surface of a dielectric layer(6). A feeder(5) and the first patch(8) are formed on an upper face of the dielectric layer(6). The feeder(5) is electrically connected to the first patch(8). The first foam layer(4) is formed on the feeder(5) and the first patch(8). A dielectric film(3) is formed on the first foam layer(4). The second patch(1) is formed on the dielectric film(3). The second foam layer(2) is formed on the second patch(1). The first and the second patches(8,1) are overlapped each other. The first patch(8) is electromagnetically connected to the second patch(1). The first and the second foam layers(4,2) have a plurality of air bubbles and low dielectric constants, respectively.
Abstract:
PURPOSE: An active antenna apparatus for the mobile reception of a multi satellite signal and the chasing method are provided to receive the satellite signal of an another different polarization and receive the desired satellite signal in moving under the existence of the multi satellite signal having same polarization and frequency. CONSTITUTION: A radome(1) protects the system from the outside. A radiation module(2) can receive an electric wave of double polarized wave and a multiple satellite signal. The multiple satellite signal is inputted to the radiation module(2) passing through the radome(1). An active channel module(3) amplifies the received satellite signal as a low noise. A beam formation module(4) controls the phase of a phase displacement device. A multiple satellite chasing controller(9) controls the chasing of the desired polarized satellite signal among the multiple satellite signal when moving.
Abstract:
본안정적으로정합특성이유지될수 있도록 13-부틸렌글리콜용액을이용하여마이크로웨이브이미징방식을통해유방암을진단하는장치및 그방법에대한것으로용액탱크, 안테나, 검체투입부, 검사결과분석부를포함할수 있으며, 이를통해사용함으로써증류수와용액이완전히섞이지않는현상을미리차단하고, 13-부틸렌글리콜 100% 단일용액의유전율및 도전율특성이시간에따라안정적으로보존되어기존의유방암측정을보다개선할수 있다.
Abstract:
본 발명의 전자파를 이용한 영상 재구성 방법은, 송신 안테나로부터 송출되어 영상 재구성 영역을 통과하는 전자파 측정값을 획득하는 과정과, 상기 영상 재구성 영역 내에 기 설정된 다수의 그물망을 설정하는 과정과, 설정된 상기 다수의 그물망 각각의 기저함수를 이용하여 그물망 간의 정합 시스템 행렬을 생성하는 과정과, 생성된 상기 정합 시스템 행렬을 이용하여 평활화된 그린함수 행렬을 생성하는 과정과, 생성된 상기 평활화된 그린함수 행렬에 의거하여 상기 영상 재구성 영역에 대한 순방향 해석을 수행하여 전자파 계산값을 생성하는 과정과, 획득된 상기 전자파 측정값과 생성된 상기 전자파 계산값 간의 오차를 계산하고, 계산된 오차의 변화가 기 설정된 최적화 판정 기준을 충족시키는지의 여부를 체크하는 과정과, 상기 기 설정된 최적 화 판정 기준이 충족되지 않을 때, 그물망의 매개변수를 업데이트하는 과정과, 상기 기 설정된 최적화 판정 기준이 충족될 때, 상기 영상 재구성 영역에서의 복원 영상을 출력하는 과정을 포함할 수 있다.
Abstract:
The present invention relates to a method and a device for phase measurement for microwave image diagnosis. The disclosed method for phase measurement comprises the steps of: measuring a phase value of microwaves received by N receiving antennas; calculating a phase difference value of the microwaves received by the adjacent receiving antennas among the N receiving antennas; and acquiring unwrapped phase data by selectively adding and subtracting the measured phase value according to the calculated phase difference value. Therefore, since an unwrapped phase can be easily measured even if a narrowband microwave transceiving unit is configured using a single frequency when acquiring the unwrapped phase data, the microwave transceiving unit can be configured at low costs, thereby reducing manufacturing costs. Since a single frequency, not a plurality of frequencies, is measured, measurement time is reduced. Since a measurement frequency band can be increased, resolution characteristics of a microwave image diagnostic device can be improved.
Abstract:
The present invention relates to a breast phantom for microwave imaging, a method for testing the reliability of an apparatus for diagnosing breast cancer using the same and an apparatus for diagnosing breast cancer comprising the same. A mock breast tissue phantom and a mock cancer tissue phantom are provided. The mock breast tissue phantom is separated from a mock cancer tissue phantom. The mock breast tissue phantom and the mock cancer tissue phantom are formed by using a solvent or by mixing water and the solvent. A relational expression between the specific gravity of the solvent (b) and the specific gravity of the water (a) is (b-a)/a x 100. This value is -10 to +10 (except for zero).
Abstract:
PURPOSE: A microwave image restoring device and method thereof are provided to quickly obtain an effective initial estimation value by calculating values only few times. CONSTITUTION: A breast cancer diagnosing device comprises a tank into which a breast(210) is inserted. If a breast with cancer is inserted into the tank, the lengths of antennas are lengthened or shortened to set an initial length. An electromagnetic wave transceiver(232) receives the amplitude and phase information of an electromagnetic wave through sixteen input lines. The amplitude and phase information is measurement data necessary for restoring an image received through the antennas. The measurement dada is inputted to a display processing unit(246) through an image processing unit(238) and is converted into graphic data.
Abstract:
본 발명은 인체 암 진단 장치에 관한 것으로, 인체로 전자파 신호를 송신하고, 인체를 통해 상기 전자파 신호를 수신하는 다수의 안테나들; 상기 다수의 안테나들 각각을 송신 모드 혹은 수신 모드로 모드 변경하는 스위칭부; 상기 스위칭부에서의 스위칭 결과 수신 모드로 설정된 안테나로부터 수신되는 전자파 신호를 중간 주파수 신호로 변환하는 신호 변환부; 및 상기 스위칭부의 스위칭 동작을 제어하는 스위칭 제어부와 상기 변환된 중간 주파수 신호로부터 인체 내부의 유전율 분포 영상을 파악하는 데이터 처리부를 포함하는 제어부;를 포함하는 것을 특징으로 하는 전자파 특성을 이용한 인체 암 진단 장치에 의해 전자파 신호 측정의 정확도를 더 높일 수 있는 효과가 있다.