A three-channel broadband non-contact rotary hinge and its realization method

Abstract

The invention provides a three-channel broadband non-contact rotary hinge and an implementation method thereof, is mainly used for solving the problems of design of coaxial line outer conductors of a third channel and combination and integration of three channels of the three-channel broadband non-contact rotary hinge, and belongs to the technical field of radar antennas and microwaves. According to the three-channel broadband non-contact rotary hinge, first channel and second channel stacking adopts coaxial line inner conductors to be connected with relative rotating parts of the first channel and the second channel; the axial line inner conductors of the first channel and second channel designed with three groove tooth structures serve as a rotating shaft of the rotating hinge to drive the relative rotating part of the third channel to rotate; and the inner conductor is integrally designed in structure and the structure strength is high. An elastic cylindrical tube is designed as a transition part between the relative rotating parts of each coaxial line outer conductor of the third channel, so that axial play of the outer conductors in the relative rotating process is eliminated and the hidden danger of reliability reduction due to direct frictional contact when the outer conductors rotate in a relative manner is avoided.

Description

technical field [0001] The invention relates to a three-channel broadband non-contact rotary hinge and a realization method thereof, which are suitable for electronic equipment such as modern radars. The invention belongs to the field of radar antenna and microwave technology. Background technique [0002] The input port and output port of the rotary hinge are relatively rotating. When the radar antenna is rotating in all directions, the rotary hinge can transmit radar signals normally. The present invention relates to a three-channel broadband non-contact rotary hinge, the first and second channels require a relative working bandwidth of 40%, and adopts a section of stub radial line supporting voltage probe structure to realize input signal excitation and output signal coupling , the distance hs between the output voltage probe and the seat of the first and second channel output ports has a great influence on the realization of the first and second channel output signal co...

AI Technical Summary

Problems solved by technology

The present invention relates to a three-channel broadband non-contact rotary hinge, the first and second channels require a relative working bandwidth of 40%, and adopts a section of stub radial line supporting voltage probe structure to realize input signal excitation and output signal coupling , the distance hs between the output voltage probe and the seat of the first and second channel output ports has a great influence on the realization of the first and second channel output signal coupling. Due to the accumulation of processing tolerances of the three-channel broadband non-contact rotary hinge, the development of the three-channel The distance hs must be adjusted when the broadband non-contact rotary hinge is used. If the existing adjacent channel radial choke groove structure design is used to realize the accumulation of the first and second channels, when the distance hs is adjusted, the coaxial lines of the first and second channels The axial position and size between the inner conductor and the relatively stationary parts of the first and second channels also change accordingly, so that the inner conductor as the rotating shaft of the three-channel broadband non-contact rotary hinge cannot realize the overall design in structure, and the structural strength is low; The working frequency of the three channels covers from the P-band to the C-band, and the working frequency is wide. The direct contact sliding friction structure is generally adopted between the rotating part of the outer conductor of the coaxial line and the relatively static part, but the performance will be deteriorated due to rotating wear. , Reliability reduction and other hidden dangers

[0003] The invention relates to a method for realizing a three-channel broadband non-contact rotary hinge, which is mainly used to solve the problem of the design of the third channel coaxial outer conductor of the three-channel broadband non-contact rotary hinge and the integration of the three channels.

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