Millimeter-wave wideband TE01-mode rotating joint

Abstract

The invention relates to a rotating joint technology in the field of communication, and in particular discloses a millimeter-wave wideband TE01-mode rotating joint. The rotating joint is used for connecting a rotary circular waveguide with a fixed circular waveguide and comprises fixedly connecting parts and rotating parts; the entire rotating joint is of a rotational symmetric structure; each fixedly connecting part comprises a fixedly connecting plate and a connecting screw; each connecting screw penetrates through the corresponding fixedly connecting plate to be fixedly connected with the corresponding fixed circular waveguide; hollow cavities are respectively retained between the connecting plates and the rotary circular waveguides and between the connecting plates and the fixed circular waveguides; the rotating parts are arranged in the hollow cavities; the main body of each rotating part is a deep-grooved-ball rolling bearing sleeved on the outer wall of the corresponding rotary circular waveguide; and the outer wall of each deep-grooved-ball rolling bearing is tightly attached to the inner wall of the corresponding fixed circular waveguide. In the invention, the wideband, low-loss and high-efficiency transmission of a millimeter-wave over-mode signal can be realized; and the rotating joint has the advantages of being short in design cycle, compact in structure, low in cost, easy to process, convenient to install, etc.

Description

Technical field [0001] The invention relates to a rotary joint technology in the communication field, in particular to a millimeter wave broadband TE 01 Mold rotation joints. Background technique [0002] In the application of modern radar systems and communication systems, in order to search for targets, track targets, and measure the spatial position of targets, the antenna of the system must be rotated at any time. Rotary joints are just to meet the needs of antennas to continuously search for targets, track targets and measure targets during work, and are an important device for completing the task of microwave signal transmission when the antenna is rotating. For example, the publication date is 2010.07.21, and the publication number is CN 201532999U. The Chinese patent document discloses a straight-through radio frequency coaxial rotary joint, which includes a coaxially arranged rotating part and a fixed part; wherein, a core rod, an insulating bush, The connecting sleeve,...

AI Technical Summary

Problems solved by technology

However, the transmission loss of the main mode waveguide in the millimeter wave frequency band continues to increase, which is not conducive to the efficient transmission of signals, such as TE 01 The advantages of low transmission loss of high-order modes are revealed, so more and more millimeter-wave systems begin to use over-mode waveguides to propagate high-order modes to reduce transmission losses and improve signal transmission efficiency

Judging from the public literature at present, there is no information about TE in China. 01 There are no detailed literature introductions abroad on the report of modular rotary joints

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