A slow-wave circuit component with a high-frequency cut-off load structure
A technology of load structure and slow wave circuit, which is applied in the field of traveling wave tubes, can solve the problems that the input and output ends cannot be completely matched, cannot meet the assembly requirements of large working ratio traveling wave tubes, poor dispersion characteristics and heat conduction, etc. Achieve the effect of stable work, high injection wave interaction and good performance
Active Publication Date: 2016-02-10
NANJING SANLE ELECTRONICS INFORMATION IND GRP
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Problems solved by technology
[0003] There is an internal feedback channel in the existing traveling wave tube, and the input end and the output end cannot be completely matched, so the reflected power generated by the mismatch at the output end will be reversely transmitted to the input end along the slow wave line. The input end reflects a part of it and becomes the power transmitted in the forward direction. This part of the power belongs to the feedback signal
If the strength of the feedback signal is equal to or greater than the strength of the original input signal, and the phase difference between the two When the integer multiple of , the traveling wave tube will produce self-excited oscillation, which will destroy the stable operation of the traveling wave tube, and the slow wave circuit of the prior art has poor cooling efficiency, poor dispersion characteristics and heat conduction, and cannot meet the large working ratio Assembly requirements for traveling wave tubes
Method used
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Embodiment 1
[0024] Such as Figure 1 to Figure 5 As shown, a slow-wave circuit assembly containing a high-frequency cut-off load structure, it includes: an input waveguide (1), a coupling cavity (2), an output waveguide (3), and the coupling cavity (2) is combined by a cavity ring (4) constitutes, the cavity ring combination (4) is formed by the cavity ring (4-1) and the cavity sheet (4-2), and the high frequency cut-off load structure ( 5).
[0025] In the above-mentioned slow-wave circuit assembly with a high-frequency cut-off load structure, the cavity ring (4-1) and the cavity sheet (4-2) are both provided with water grooves (6). Both the cavity ring (4-1) and the cavity sheet (4-2) are provided with positioning circular holes (7).
[0026] For the slow-wave circuit assembly with a high-frequency cut-off load structure described above, the cavity ring (4-1) is provided with a small absorbing cavity (8), and a small absorbing porcelain (9) is placed in the small absorbing cavity (8)....
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The invention discloses a slow wave circuit assembly with a high-frequency load cutting structure. The slow wave circuit assembly with the high-frequency load cutting structure comprises an input waveguide (1), a coupling cavity (2) and an output waveguide (3). The coupling cavity (2) is composed of a cavity loop assembly (4). The cavity loop assembly (4) is composed of a cavity loop (4-1) and a cavity sheet (4-2). The high-frequency load cutting structure (5) is arranged in the cavity loop assembly (4). According to the slow wave circuit assembly with the high-frequency load cutting structure, the structural design is reasonable, the dispersion characteristic is good, the cooling efficiency is high, nonlinear beam-wave interaction is high, and the slow wave circuit assembly with the high-frequency load cutting structure can be widely applied to a traveling-wave tube with the large duty ratio and can overcome the shortages in the prior art.
Description
technical field [0001] The invention relates to a traveling wave tube, in particular to a slow wave circuit component with a high-frequency cut-off load structure for the traveling wave tube. Background technique [0002] The role of the slow wave circuit is to transmit high-frequency electromagnetic traveling waves and reduce the phase velocity of the electromagnetic waves to the synchronous speed of the electron beam. The slow-wave structure consists of a series of resonant cavities and drift tubes, which are electron beam channels but are cut-off waveguides for high-frequency fields. The high-frequency field between cavities cannot be coupled through the drift tube, and the field coupling between cavities is completely realized through the coupling holes arranged on the adjacent cavity walls. When the electron beam enters the slow wave circuit, the electrons at the zero point of the high-frequency field keep their speed unchanged, the electrons in the positive half cycle...
Claims
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IPC IPC(8): H01J23/24
Inventor王爱美董笑瑜王百全曾雨竹黄鹏潮高峰梁田
OwnerNANJING SANLE ELECTRONICS INFORMATION IND GRP