Spiral filter and design method thereof
A filter and spiral technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of easy deformation of spiral coils and poor device stability, and achieve small size, improved reliability and stability, and operability strong effect
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Embodiment 1
[0040] see figure 1 and figure 2 , the helical filter of this embodiment is a 6-cavity helical filter, and its main components include: a cavity 1, an upper cover plate 2, a lower base plate 3, a spiral resonator 4, a dielectric fixing column 5, a tuning screw 6, and a coupling screw 7 , Connector 8 and connecting wire 10. Among them, the cavity 1, the upper cover plate 2 and the lower base plate 3 are all made of good conductor materials and fixedly connected with screws, and 6 square or rectangular single cavities are formed in the cavity 1, and the single cavities are arranged according to a certain structure or order , two adjacent single cavities communicate through windows 9, and installing a helical resonator 4 in each single cavity constitutes the main body of the helical filter.
[0041] It should be noted that not all adjacent single cavities are provided with windows 9, such as figure 2 As shown, there are six single cavities a, b, c, d, e, f in the cavity 1, a...
Embodiment 2
[0048] The helical filter of this embodiment is such as Figure 4 The working principle of the shown 3-cavity helical filter is roughly similar to that of Embodiment 1, the difference in structure is that the number of single cavities is 3, correspondingly, the number of helical harmonic oscillators 4 is 3, and the number of windows 9 is 2 one, and the rest will not be repeated.
Embodiment 3
[0050] The helical filter of this embodiment is such as Figure 5 The working principle of the 4-cavity helical filter shown is roughly similar to that of Embodiment 1. The difference in structure is that the number of single cavities is 4. Correspondingly, the number of helical harmonic oscillators 4 is 4, and the number of windows 9 is 3. one, and the rest will not be repeated.
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