A Group Delay Suppression Method for Coupled Cavity Traveling Wave Tubes
A technology of traveling wave tube and coupling cavity, which is applied in the field of suppressing the group delay of the coupling cavity traveling wave tube, can solve the problems affecting the accuracy of time synchronization and pseudo-range measurement, the influence of signal propagation delay, etc., and meet the requirements of group delay , improve the degree of synchronization, and achieve the effect of suppression
Active Publication Date: 2019-12-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
The requirements for the time accuracy of the amplifier are getting higher and higher, and the group delay of the amplifier will affect the delay of signal propagation, which in turn will affect the time synchronization accuracy and pseudo-range measurement
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[0018] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0019] Such as figure 1 As shown, a method for suppressing the group delay of a coupled cavity traveling wave tube includes the following steps:
[0020] S1. Scanning and calculating the period length of the coupled cavity traveling wave tube to obtain its dispersion characteristic curves at different period lengths;
[0021] S2. Gradually increase the opening angle of the coupling slot of the coupling cavity traveling wave tube at a certain angle each time, and perform period length scanning calculation for each coupling cavity traveling wave tube with different coupling slot angles to obtain the opening angle of each different coupling slot and the dispersion characteristic curves of the coupled cavity traveling wave tube under different period lengths;
[0022] S3. Comparing each dispersion characteristic curve, a series of coupling cavit...
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The invention discloses a method for suppressing the group time delay of a coupling cavity traveling wave tube, comprising the following steps: S1, performing period length scanning calculation on the coupling cavity traveling wave tube to obtain its dispersion characteristic curve; S2, gradually increasing the coupling cavity traveling wave tube The opening angle of the coupling slot of the wave tube is calculated by scanning the period length of each coupling cavity traveling wave tube with different coupling slot angles; S3, obtaining the coupling cavity traveling wave with different coupling slot opening angles and period lengths with the same phase velocity tube structure; S4. Calculate the injection-wave interaction for the coupling cavity TWT structure obtained in S3, and use the coupling slot opening angle and period length with the smallest group delay under the condition of meeting the output power requirements as the coupling cavity TWT structure. final structure. The invention improves the synchronization degree of the electron injection and the wave in the whole frequency band by reasonably controlling the opening angle and the period length of the coupling groove, effectively realizes the suppression of the group time delay, and satisfies the requirement of the traveling wave tube amplifying machine for the group of the coupling cavity traveling wave tube. Latency requirements.
Description
technical field [0001] The invention belongs to the nonlinear field of coupling cavity traveling wave tubes, in particular to a method for suppressing group time delay of coupling cavity traveling wave tubes. Background technique [0002] Coupled cavity traveling wave tube is a microwave amplifier with high efficiency, high gain, high power, and good heat dissipation. At present, dozens of types of coupled cavity traveling wave tubes have been used in ship-borne, airborne missile-borne and ground military In electronic equipment, it is widely used in satellite, ground communication and remote sensing. With the increasing requirement of time synchronization precision in communication and other fields, the precision requirement has reached 1-2 ns. The requirements for the time accuracy of the amplifier are also getting higher and higher, and the group delay of the amplifier will affect the delay of signal propagation, and then affect the time synchronization accuracy and pseu...
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IPC IPC(8): H01J25/34H01J23/27
CPCH01J23/27H01J25/34
Inventor 胡玉禄郝晓宇胡权朱小芳杨中海李斌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA