Abstract:
본 발명은 고주파출력을 발생시키는 부품으로 레이더(Radar), 의료기기, 전자레인지 등의 조리기, 그밖의 마이크로파 응용기기 등의 분야에서 사용되고 있는 마그네트론에 관한 것으로서, 양극실린더와, 상기 양극실린더의 내측면으로부터 안쪽으로 방사상으로 연장된 다수의 양극베인과, 상기 양극실린더의 중심축을 따라서 연장되는 음극필라멘트부와, 축방향의 일측 단부에서 상기 다수의 양극베인 중 하나에 접속된 제1단부 및 상기 축방향의 타측 단부에서 안테나에 접속된 제2단부를 가진 안테나 리드를 포함하는 마그네트론에 있어서, 상기 음극필라멘트부는, 하단으로부터 전원이 입력되는 중심의 음극부와, 상기 음극부의 둘레로 나선상으로 감싸는 필라멘트와, 상기 음극부의 편심을 예방하기 위해 상기 음극부의 상단에 설치되는 음극지지대를 구비하고, 상기 음극부는 1000[W]급 출력의 마그네트론을 기준으로 할 때, 적어도 상기 다수의 양극베인과의 상호작용하는 상하 길이 범위에서 2.5[mm] 이상의 직경으로 이루어진 것을 특징으로 한다. 이에 의해, 필라멘트의 단선을 예방하고 마그네트론의 효율을 향상시킬 수 있다.
Abstract:
Embodiments of the present invention generally provide a magnetron that is encapsulated by a material that is tolerant of heat and water. The encapsulated magnetron is described above and in the attached appendix. In one embodiment, the entire magnetron is encapsulated. In another embodiment, the magnetron includes magnetic pole pieces, and the magnetic pole pieces are not covered by the encapsulating material.
Abstract:
The present invention pertains to the field of M-type microwave devices, wherein the purpose of said invention is to provide a more efficient use of the working surface in field emitters, to increase the reliability thereof, to improve the field emission stability and to extend the operation duration of the device. To this end, the structure of an M-type micro-wave device comprises an anode as well as a cathodic node arranged coaxially inside the anode, wherein said cathodic node is made in the shape of a cylindrical rod that comprises on its surface a plurality of elements consisting in flat (film-type) field emitters and secondary emitters for generating a first and a secondary emission. The normal to the flat field emitters is not parallel to the cathode axis and defines with said axis an angle wider than zero degrees. The end of a field emitter is protected with thin tunnel-effect layer of a dielectric comprising impurities that consist in various materials, including impurities which consist in analogous materials or in materials with a reduced work function.
Abstract:
There is provided a tunable high power magnetron (10). An annular anode (12) circumscribes a cathode (14) and contains a plurality of resonating cavities (20). The volume of the resonating cavities (20) determines the output frequency of the RF energy emitted by the magnetron (10). The volume of the cavities (20) is varied by changing the position of movable, electrically conductive backwalls (24).
Abstract:
The invention relates to magnetron-type microwave devices containing a cylindrical anode arranged coaxially within it and a cathode assembly separated by an inter-electrode space and provided with lateral focusing rings, as well as a secondary emission- and a self-emission component, the said self-emission component being electrically insulated by a gap from the secondary emission component and capable of being kept at a potential different from that of the said secondary emission component and such as to promote field emission. Structures to support the self-emission component of the cathode assembly are arranged behind the focusing rings and connect the said component to the external potential source. The self-emission component is designed either in the form of tapered elements running through the aperture in the focusing rings or as wire structures arranged along the surface of the magnetron's cathode assembly. With the proposed arrangement, the magnetron can be started up with fairly low working voltages through self-emission, without any preheating.