Novel microwave rotary joint waveguide

TL;DR: In this paper, the authors proposed a microwave rotary joint waveguide, where the first square waveguide is fixedly connected with the first circular waveguide; the second circular waveguaranteed to be fixed connected to the second round waveguide.

Abstract: The utility model, which relates to the field of the electromagnetic wave propagation technology, discloses a novel microwave rotary joint waveguide. The microwave rotary joint waveguide comprises a first square waveguide, a first circular waveguide, a second circular waveguide and a second square waveguide, wherein the first square waveguide, the first circular waveguide, the second circular waveguide and the second square waveguide are successively connected at the electromagnetic wave propagation direction. The first square waveguide is fixedly connected with the first circular waveguide; the second circular waveguide is fixed connected with the second square waveguide; and the first square waveguide and the first circular waveguide can be rotated relatively to the second circular waveguide and the second square waveguide. According to the utility model, the signal power loss of the electromagnetic wave in the waveguide during the propagation process is low. Furthermore, a first irregular waveguide with matched impedance is used for connecting the first square waveguide and the first circular waveguide and a second irregular waveguide with matched impedance is used for connecting the second circular waveguide and the second square waveguide, thereby improving the return loss index of the electromagnetic wave and further reducing the loss of the signal power of the electromagnetic wave.