High power ferrite phase shifter based on structure of waveguide in parallel
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摘要: 提出了一种多路波导并联结构，用于实现高功率移相器。目前的铁氧体移相器，为实现高功率容量，通常采用双铁氧体磁环结构。仿真分析了各尺寸参数对双环移相器传播模式、相移效率及功率容量的影响，并进行优化设计，使移相器功率容量达到百kW量级。基于双环形式，采用一种多路波导并联结构，使其功率容量达到MW量级。经匹配设计后，移相器在9.25~9.8 GHz频率范围内，驻波比小于1.4，饱和差相移在390左右，可实现X波段MW级高功率360电控移相。Abstract: A parallel waveguide structure for high power phase shifter is proposed. The ferrite phase shifter at present can achieve high power capacity with dual-toroids structure. The influence on the propagation, phase shift efficiency and power capacity of the dual toroids ferrite phase shifter of its parameters is simulated and analyzed in this paper. The peak power capacity can reach hundred kW level after optimization. By using parallel waveguide in parallel structure based on the dual-toroids form, it can be increased to MW level. After matching design, VSWR of the shifter is less than 1.4 from 9.25 to 9.8 GHz. The saturation differential phase shift is about 390 degrees. So this design can achieve 360 degrees electronically controlled phase shift above MW level in X band.
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Key words:
- phase shifter /
- ferrite /
- high power capacity /
- higher order mode /
- critical magnetic field
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