Compact flangeless waveguide connection structure and design method
A connection structure, flangeless technology, applied in the microwave field, can solve the problems of low mechanical stability of the direct butt welded structure, unfavorable to the overall design and flexible layout of the system, and difficult to predict and guarantee the electromagnetic transmission performance. Miniaturization and flexible layout, reliable electromagnetic transmission performance, the effect of avoiding electromagnetic leakage
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[0065] Example
[0066] Taking the realization of the compact flangeless connection of the Ku-band BJ120 (WR75) waveguide (working bandwidth 9.84GHz~15GHz) as an example, the specific implementation process of the present invention is described:
[0067] (1) Determine the structural dimensions of the first impedance transformation section 12, the first non-standard waveguide section 13 and the second impedance transformation section 22 by the stepped impedance transformation method. Here, the first-level stepped impedance transformation method is selected, and the electromagnetic simulation program is used to simulate the electrical Transmission performance, working bandwidth covers the entire BJ120 waveguide working bandwidth.
[0068] (2) Establish a simulation model of a single metal protrusion in the periodic metal protrusion array 14 in the electromagnetic simulation program, such as Figure 5 As shown, the height of each metal protrusion in the periodic metal protrusion array 1...
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