Abstract:
일 실시예에 따른 중심주파수와 대역폭을 변경할 수 있는 가변 필터 어셈블리에 있어서, 상기 가변 필터 어셈블리는, 커버와 몸체의 결합으로 내부에 복수개의 공동들을 형성하며, 상기 복수개의 공동들은 복수개의 공동벽에 의하여 구분되는 케이싱, 상기 케이싱의 길이방향 양 면에 관통되어 부착되는 입력 포트 및 출력포트, 상기 각각의 공동 하부 면에 부착된 공진기, 헤드와 봉을 포함하며 상기 봉은 상기 커버를 관통하고 상기 공진기에 삽입 될 수 있는 복수 개의 튜닝 요소, 및 상기 각각의 헤드 상에 위치하며 상기 헤드와 접하는 복수개의 캠을 포함하고, 상기 봉의 삽입 정도는 상기 캠에 의하여 조정될 수 있다.
Abstract:
A compact waveguide terminator according to an embodiment of the present invention improves frequency characteristics, so that, in the embodiment, the compact waveguide terminator comprises a waveguide, a terminal unit which is coupled to the waveguide and has a groove, and a thin film resisting unit which is coupled to the groove and attenuates input signals from the center region of the waveguide.
Abstract:
Disclosed is a substrate integrated waveguide coupler by the present invention. According to an embodiment of the present invention, the substrate integrated waveguide coupler includes a substrate; an upper conductor plate coated on the upper part of the substrate; a lower conductor plate coated on the lower part of the substrate; two pipeline-shaped outer via holes which are parallel to each other in both sides of the substrate and electrically connects the upper and the lower conductor plate to each other; and an inner via hole which is located between the two outer via holes and has a middle part of a predetermined length which is isolated to form a short slot combining inputted signals.
Abstract:
PURPOSE: A device and a method of tuning a high frequency filter efficiently and quickly tune the filter by performing the final tuning through a computer. CONSTITUTION: A measurement device (110) measures a scattering (S) parameter curve of a high frequency filter to be tuned. A control device (120) tunes the shape of the S parameter curve to be matched with the shape of a target S parameter curve. The control device determines the transfer amount of a tuning screw based on a feature point on the S parameter curve. The control device includes a shape tuning part using shape similarity and a minute tuning part determining the movement amount of the tuning screw. A tuning device (130) moves the tuning screw based on the determined transfer amount of the tuning screw. [Reference numerals] (110) Measurement device; (120) Control device; (130) Tuning device
Abstract:
PURPOSE: A Butler matrix is provided to stably maintain amplitude and phase between the transmission paths. CONSTITUTION: Input couplers(21,22) are arranged in an input end in order to output input signal to a plurality of paths. Output couplers(23,24) output an output signal to the plurality of the paths by receiving the signal from the input couplers. A separation coupler(31) is formed on a crossed path including an intersection area in order to divide the signals transmitted through different transmission paths. A compensation coupler(33) is formed on a path except for the crossed path in order to compensate for a difference between the phase and the signal transmitted through the crossed path. [Reference numerals] (AA) Input; (BB) Output;
Abstract:
PURPOSE: A deployable reflective array antenna is provided to improve bending and twisting intensity of a plane by forming a supporting frame supporting a reflective array antenna having a minimum frame. CONSTITUTION: A plurality of reflective array antenna panels(1101-1104) are interconnected by a hinge unit formed in a longitudinal axis. The plurality of reflective array antenna panels comprises a membrane, a reflective element, and a supporting frame. The reflective element is arranged on a front side of the membrane. The supporting frame supports the membrane. The supporting frame comprises an outer frame and a plurality of reinforcing members.
Abstract:
PURPOSE: A mesh antenna and a manufacturing method thereof are provided to maintain a reflecting surface precisely by accurately maintaining nodal points in which multiple cables are crossed. CONSTITUTION: A front net comprises multiple grids divided by the intersection of a plurality of first cables. A rear net comprises multiple grids divided by the intersection of a plurality of second cables. The mesh covers a plurality of grids formed on the front net. The nodal point cover accepts a plurality of first cables. A nodal point body(360) is coupled with a nodal point cover(310) on a mesh. A tension tie connection part(370) is connected to the tension ties.