Waveguide bridge

Abstract

The invention discloses a waveguide bridge. A section with the length of L is resected at a common narrow wall of a waveguide and is used as a coupling gap; trapezoid heights T1 and T2 are piled at walls of a main waveguide and a secondary waveguide; cavities D1 and D2 are opened at the upper portion and the lower portion of the coupling gap L; the length of the L as well as the upper bottom width and the lower bottom width of the T1 and the T2 are adjusted; and main wave and resonant point positions of all ports of waveguide transmission are adjusted. According to the invention, the waveguide bridge has advantages of broad band, low loss, admissible high power and stable performance.

Description

technical field [0001] The invention relates to a passive device in a KU band microwave communication device, in particular to a waveguide bridge. Background technique [0002] With the rapid development of microwave technology, the market's requirements for the loss of microwave passive components are also increasing. As a microwave signal to distribute or synthesize power in a specific proportion, the bridge has become one of the most commonly used components in the field of microwave technology, generally in the form of microstrip lines and waveguide structures. In the microstrip line structure, in order to realize wide-band and / or ultra-wideband applications, bridges mostly appear in the form of parallel coupling or cascading in a well-tac-toe structure. Among them, the rewind thickness in the dielectric filled microstrip line bridge is about 0.035mm, the dielectric constant is 2.5~4.4, and the coupling distance is very small. On the one hand, this will greatly limit ...

AI Technical Summary

Problems solved by technology

However, as the tuning screw goes deeper, the distance between the top surface of the screw and the bottom surface of the waveguide will also decrease, and the electric field between them will also increase.

When the electric field is too high, the air in the waveguide cavity will be ionized, that is, sparking will occur, which will affect part of the performance of the waveguide.

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