Gaussian beam filter with diagonal horn structure and implementation method thereof
A Gaussian beam and horn technology, applied in the field of Gaussian beam mode filter, can solve the problems of increasing the ohmic loss of the overmode waveguide transmission line, reducing the beam quality of the output port, and being difficult to meet the application standards.
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[0047] The present invention will be further elaborated below through specific embodiments in conjunction with the accompanying drawings.
[0048] Such as figure 1 As shown, the Gaussian beam mode filter with a diagonal horn structure in this embodiment includes: a first corrugated horn, a transition section waveguide and a second corrugated horn.
[0049] In this embodiment, two identical corrugated horns are connected back to back by a waveguide in the transition section, the Gaussian beam propagates along the z direction, the working frequency is 224GHZ, and the curved surface profile of the horn adopts sin 2 type, the expression of its radius a(z) changing with the distance z is Oral radius a o = 3mm, back radius a i =0.65mm, in order to reduce the reflection caused by impedance mismatch, the groove depth of the corrugated groove changes with the radius, and the radius of the horn is a j place, groove depth d j The expression is This embodiment adopts the commercia...
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