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公开(公告)号：US4763043A
公开(公告)日：1988-08-09
申请号：US812155
申请日：1985-12-23
Applicant: George H. MacMaster , Lawrence J. Nichols
Inventor： George H. MacMaster , Lawrence J. Nichols
CPC classification number: H01J23/05
Abstract: A crossed-field amplifier has a cathode in the form of a P-N junction semiconductor which is biased to the conductive state to cause the crossed-field amplifier to amplify. The P and N regions of the semiconductor are connected to an energy source which is pulsed to produce conduction in the P-N junction and thereby allow secondary emission from the cathode. A reverse bias voltage prevents secondary emission from the cathode. The tube requires only low voltages to be applied to the cathode P-N junction to completely deactivate the crossed-field amplifier tube without requiring the removal of the RF drive pulse applied to the cathode- or anode-slow-wave circuit and without requiring the removal of the DC high voltage power supply which therefore need not be pulsed.
Abstract translation: 交叉场放大器具有P-N结半导体形式的阴极，该阴极被偏置到导通状态以使得交叉场放大器放大。 半导体的P和N区域连接到脉冲的能量源，以在P-N结中产生导电，从而允许来自阴极的二次发射。 反向偏置电压可防止来自阴极的二次发射。 该管仅需要将低电压施加到阴极PN结以完全停用交叉场放大器管，而不需要去除施加到阴极或阳极 - 慢波电路的RF驱动脉冲，并且不需要去除 因此不需要脉冲的直流高压电源。
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公开(公告)号：US4705989A
公开(公告)日：1987-11-10
申请号：US812858
申请日：1985-12-23
Applicant: Kousuke Takada , Akira Kousaka
Inventor： Kousuke Takada , Akira Kousaka
Abstract: A magnetron comprises a ceramic stem having a cathode support structure. Sealing metal plates are sealed hermetically to the cathode side of the ceramic stem, closing off hermetically the holes running through the stem for the outer connecting leads. The outer connecting leads are connected electrically to the sealing metal plates. The cathode, which is disposed in the center of the anode, is supported by a pair of cathode support rods. The cathode support rods are fixed to the sealing metal plates. In another embodiment, the end-face of the ceramic stem is formed such that the part of the surface of the stem to which the cylindrical metal container, which constitutes part of the envelope of the stem, is sealed by brazing, and those parts of the surface to which the sealing metal plates are sealed by brazing, are positioned substantially on the same plane.
Abstract translation: 磁控管包括具有阴极支撑结构的陶瓷杆。 密封金属板密封地密封到陶瓷杆的阴极侧，密封地密封穿过杆的孔，用于外部连接引线。 外部连接引线电连接到密封金属板。 设置在阳极中心的阴极由一对阴极支撑杆支撑。 阴极支撑杆固定在密封金属板上。 在另一个实施例中，陶瓷杆的端面形成为使得构成杆的外壳的一部分的圆柱形金属容器的杆的表面的部分被钎焊密封，并且那些部分 密封金属板通过钎焊密封的表面基本上位于同一平面上。
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公开(公告)号：US4700109A
公开(公告)日：1987-10-13
申请号：US656495
申请日：1984-10-01
Applicant: Guilford R. MacPhail
Inventor： Guilford R. MacPhail
CPC classification number: H01J23/05
Abstract: An improvement to an existing crossed-field amplifier is shown which includes the replacement of an existing thermionic emitter with a larger platinum emitter. The platinum emitter is cooled from a surface opposite to the surface upon which a high voltage is applied to permit the form of the existing crossed-field amplifier to be maintained.
Abstract translation: 显示了现有交叉场放大器的改进，其中包括用较大的铂发射器代替现有的热离子发射器。 铂发射器从与施加高电压的表面相对的表面被冷却，以允许保持现有的交叉场放大器的形式。
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公开(公告)号：US4686413A
公开(公告)日：1987-08-11
申请号：US942955
申请日：1986-12-17
Applicant: Yoshihiko Sato , Nobuaki Yamamoto
Inventor： Yoshihiko Sato , Nobuaki Yamamoto
CPC classification number: H01J23/05
Abstract: A method of manufacturing a cathode for magnetron comprises a cathode sleeve formed as a hollow cylinder, a heater inside the sleeve, two end shields formed around the sleeve at a prescribed interval and an electron emitting material applied around the sleeve between both end-shields, wherein a plurality of isolated projections are almost regularly and intergraly formed around the sleeve between the end-shields, and the above electron emitting material is applied onto the cathode sleeve to fill gaps among the plural projections.According to the method of manufacturing a cathode of the present invention, the efficiency of electron emission and electric conductivity are not lowered, whereby the stable operation can be realized for a long term.
Abstract translation: 制造磁控管用阴极的方法包括形成为中空圆柱体的阴极套筒，套筒内的加热器，以规定间隔围绕套筒形成的两个端盖，以及在两个端盖之间施加在套筒周围的电子发射材料， 其中多个隔离的突起在端盖之间围绕套管几乎规则地并且整体地形成，并且将上述电子发射材料施加到阴极套上以填充多个突起之间的间隙。 根据本发明的阴极的制造方法，不会降低电子发射效率和电导率，从而可以长期实现稳定的动作。
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公开(公告)号：US4558250A
公开(公告)日：1985-12-10
申请号：US188507
申请日：1980-09-18
Applicant: Mamoru Tsuzurabara
Inventor： Mamoru Tsuzurabara
Abstract: A cathode structure of a thermal electron emitting cathode of an electron tube, particularly of a magnetron for preventing the damage and break due to mechanical vibration of the cathode. A spacer is interposed in a space between a center lead and a lower end shield to prevent the vibration through the center lead. The antivibration effect of the filament cathode is attained by arranging the spacer having an aperture through which the center lead and a side lead extend such that the spacer contacts to an inner wall of a shielding member which constitutes a portion of a vacuum envelope of the magnetron.
Abstract translation: 电子管的热电子发射阴极的阴极结构，特别是用于防止由于阴极的机械振动引起的损坏和断裂的磁控管的阴极结构。 间隔件被插入在中心引线和下端护罩之间的空间中，以防止通过中心引线的振动。 灯丝阴极的防振效果是通过布置具有孔的间隔件来实现的，中心引线和侧引线通过该孔延伸，使得间隔件与构成磁控管的真空外壳的一部分的屏蔽构件的内壁接触 。
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Patent Agency Ranking
公开(公告)号：US4429250A
公开(公告)日：1984-01-31
申请号：US303464
申请日：1981-09-18
Applicant: Guy Clerc , Arvind Shroff
Inventor： Guy Clerc , Arvind Shroff
Abstract: A direct heating thermionic emission cathode for high frequency tubes of the diode, tetrode or pentode type. It comprises a pyrolytic graphite support and a lanthanum hexaboride-based thermoemissive material, these elements being separated by a layer which constitutes a diffusion barrier and comprises a tantalum or hafnium carbide, a metal of the platinum group or a boron compound.
Abstract translation: 用于二极管，四极管或五极管型高频管的直接加热热电子发射阴极。 它包括热解石墨载体和基于六硼化镧的热发射材料，这些元素由构成扩散阻挡层的层分开，并且包含钽或碳化铪，铂族金属或硼化合物。
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公开(公告)号：US3944872A
公开(公告)日：1976-03-16
申请号：US303726
申请日：1952-08-11
Applicant: Donald A. Wilbur , Philip H. Peters, Jr.
Inventor： Donald A. Wilbur , Philip H. Peters, Jr.
Abstract: 1. A magnetron discharge device for noise generation comprising an elongated cathode and a plurality of anode segments surrounding said cathode to define a cylindrical space charge chamber, said cathode comprising a helix having a diameter equal to at least half the space charge chamber diameter and having a spacing between adjacent turns equal to at least half the helix diameter.
Abstract translation: 1.一种用于产生噪声的磁控管放电装置，包括细长阴极和围绕所述阴极的多个阳极段，以限定圆柱形空间电荷室，所述阴极包括直径等于空间电荷室直径的至少一半的螺旋线，并且具有 相邻匝之间的间距等于螺旋直径的至少一半。
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公开(公告)号：US3555334A
公开(公告)日：1971-01-12
申请号：US3555334D
申请日：1968-10-25
Applicant: PHILIPS CORP
Inventor： GOOR JOHANNES ANTONIUS VAN DE
CPC classification number: H01J23/05
Abstract: A tungsten dispenser cathode for a magnetron is described. The cathode is provided with end shields in the form of solid graphite rings to improve suppression of undesirable electron emission.
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公开(公告)号：US3529203A
公开(公告)日：1970-09-15
申请号：US3529203D
申请日：1968-01-25
Applicant: OTTO G KOPPIUS
Inventor： KOPPIUS OTTO G
CPC classification number: H01J23/05 , H01J1/28 , H01J19/00 , H01J2893/0023 , Y10T428/26
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公开(公告)号：US3418521A
公开(公告)日：1968-12-24
申请号：US51647165
申请日：1965-12-27
Applicant: VARIAN ASSOCIATES
Inventor： COOK EDWARD J
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