Design method for microwave high-power multi-harmonic filter and multi-harmonic filter
A technology of multiple harmonics and design methods, applied in waveguide-type devices, design optimization/simulation, instruments, etc., can solve the problems of long time, difficult design, complex structure of high-power multiple harmonic filters, etc. The effect of improving the accuracy and shortening the design cycle
Active Publication Date: 2018-11-13
NO 27 RES INST CHINA ELECTRONICS TECH GRP
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[0003] However, the structure of the high-power multi-harmonic filter is complicated, and the design is difficult. Although the high-frequency field simulation software can be used for analysis, it takes a long time to directly use the software to simulate the filter as a whole, and the calculation accuracy is also low. not too high
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[0038] Such as figure 1 and Figure 5 Shown, a kind of design method of microwave high-power multiple harmonic filter (multi-band harmonic filter), comprises the steps:
[0039] Step S1: Carry out theoretical analysis and program demonstration, determine the preliminary values of the module arrays of different frequency band harmonic structural units in the high-power multi-harmonic filter, that is, determine each column of the module array in each frequency band harmonic structural unit The specific values of the number m of cylindrical modules and the number n of cylindrical modules in each column, the height of the cylindrical modules, the radial dimension, and the distance between the columnar modules in rows and columns.
[0040] Such as figure 2 As shown, the harmonic structural units of different frequency bands in the high-power multi-harmonic filter are distributed on the upper and lower two wide surfaces of the waveguide, and the harmonic structural units of d...
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The invention discloses a design method for a microwave high-power multi-harmonic filter, and the multi-harmonic filter. The method comprises the steps of firstly, performing simplification to form aT branch which is periodically loaded by using a symmetry principle; working out an equivalent circuit of an ET branch by using an equivalent circuit method according to a transmission line principle;in combination with scattering parameters obtained through calculation of electromagnetic field simulation software, extracting an impedance value of a single harmonic structure unit in the high-power multi-harmonic filter; and working out attenuation and reflection loss characteristics of the filter by utilizing a relation between active impedance of the single harmonic structure unit and the characteristics of the filter. According to the method, the simulation calculation of the high-power multi-harmonic filter is carried out, so that the engineering design precision is improved, and meanwhile, the design cycle can be greatly shortened.
Description
technical field [0001] The invention relates to the technical field of microwave high-power transmitters, in particular to a design method of a microwave high-power multiple harmonic filter and a multiple harmonic filter. Background technique [0002] With the advancement of global informatization, a large amount of information needs to be transmitted through radio frequency and microwave communication equipment, requiring faster transmission speed, wider transmission bandwidth, and stronger anti-interference ability. Among these requirements, filters play an extremely important role. effect. Especially in high-power microwave applications such as deep space exploration, the role of filters is more prominent, and the difficulty of development is also greatly increased. An increasing number of communication systems must work normally in limited spectrum resources, and the spectrum must be allocated according to demand, so the accuracy of filter selection frequency is more st...
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IPC IPC(8): G06F17/50H01P1/20
CPCH01P1/20G06F30/367G06F30/20
Inventor 刘海旭李新胜韩来辉侯满宏文朝举
Owner NO 27 RES INST CHINA ELECTRONICS TECH GRP