Abstract:
PURPOSE: A broad band frequency horn antenna is provided to achieve a uniform beam width and gain in a broad band frequency by suitably selecting extension angle and horn length in both directions of electric and magnetic fields. CONSTITUTION: A horn antenna comprises an antenna section(11), a feeder section(12) and a wave guide adaptor(13), and has an operation frequency band of 3:1. The antenna section is extended in both directions of electric field(E) and magnetic field(H), in such a manner that the phase distribution of the equivalent current source distributed over the antenna aperture has a quadratic function, or cosine or sine function. The horn length is determined, such that the value obtained by multiplying the phase integer of the operation frequency band and the horn length ranges 5.6π to 17π. The extension angle in the magnetic field direction and the extension angle in the electric field direction fall within the range of 50° to 250°, respectively.
Abstract:
본 발명은 안테나의 이득 및 방사패턴의 변화없이, 안테나에 의한 공기 저항을 감소시키고 경량화가 가능한 공기 저항 및 중량이 감소된 안테나에 관한 것이다. 본 발명에 따른 공기 저항 및 중량이 감소된 안테나는, 전자기파를 집속하여 반사하는 반사판을 구비한 반사판 안테나에 있어서, 상기 반사판에는 상기 반사판의 전체면적에 대하여 상기 반사판을 관통하도록 상기 안테나의 작동주파수의 파장보다 작은 크기로 관통공이 형성되는 것을 특징으로 한다.
Abstract:
The present specification relates to a reflective array antenna using an arbitrary curvature plate. For this, the reflective array antenna installed on an arbitrary platform including a curved surface or plane, according to the present specification, includes: a reflective plate arranged on one side of the arbitrary platform; a plurality of reflective array elements arranged on one side of the reflective plate while being spaced apart from each other at predetermined intervals; and a feeder antenna for radiating electromagnetic rays to the plurality of reflective array elements arranged on the reflective plate.
Abstract:
PURPOSE: A thermal treatment apparatus is provided to prevent a burn and to make treatment possible without taking off clothes. CONSTITUTION: A thermal treatment apparatus comprises a power supply unit(120), a controller(130), a millimeter wave generating unit(110), and a millimeter wave irradiating unit(140). The millimeter wave generating unit generates millimeter wave to be used for treatment. The power supply unit supplies power to the millimeter wave generating unit and operates the millimeter wave generating unit. The controller sanctions a control signal to the millimeter wave generating unit and controls the output of the millimeter wave generated from the millimeter wave generating unit. The millimeter wave irradiating unit irradiates millimeter waves to the skin. [Reference numerals] (110) Millimeter wave generating unit; (120) Power supply unit; (130) Controller; (140) Millimeter wave irradiating unit; (150) Vacuum generating unit
Abstract:
A ridged tapered slot antenna module for a wideband phased array antenna and the wideband phased array antenna including the ridged tapered slot antenna module are provided to couple a transceiver module with the antenna module in a plug-in method. A ridged tapered slot antenna module includes an upper ridged tapered slot plate(10) and a lower ridged tapered slot plate(20), coaxial cables, and a coaxial cable cover. The upper ridged tapered slot plate and the lower ridged tapered slot plate are made of a conductor, are formed in a plate shape, and include receiving grooves for receiving the coaxial cable, an MPO(Multi-fiber Push On) connector insertion unit, and slots for coupling the upper ridged tapered slot plate with the lower ridged tapered slot plate. The coaxial cables are mounted on the receiving grooves respectively. The coaxial cable cover covers the mounted coaxial cable and is fixed by a bolt.
Abstract:
A high power wideband pulse generator using a dipole antenna is provided to control a maximum size of a pulse signal or a bandwidth of a frequency without additionally manufacturing an oscillator and the dipole antenna. A high power wideband pulse generator using a dipole antenna includes a high voltage charging device(100), an oscillator(110), and a dipole antenna(120). The high voltage charging device charges a high voltage switch with a high voltage. The oscillator has the high voltage switch generating an electromagnetic wave pulse signal of a large output after being charged with the high voltage by the high voltage charging device. The dipole antenna includes a plurality of control parts connected with both ends of the oscillator. A length of the dipole antenna can be changed according to every combination of the plurality of control parts.