Cantilever type array antenna assembling and welding process method

Abstract

The invention discloses a cantilever type array antenna assembling and welding process method which is characterized in that a galvanized screw for fixing an antenna array is changed into a copper screw, and the copper screw and the antenna array are welded in a tin-lead welding mode. An enameled wire welding mode is adopted for the antenna array at a feed part to replace a direct welding mode ofa copper column and the array, and the reliability of the cantilever type array antenna is improved through test verification of temperature circulation, vibration, impact and the like. The assemblingand welding mode has higher universality and operability, the assembling and welding quality of the cantilever type array antenna is effectively guaranteed, and the reliability of the antenna is improved. Product performance indexes meet the requirements of technical indexes after being verified by the temperature cycling, vibration, impact and other tests, the welding conditions are checked through three-dimensional videos, and the welding spot shapes of the copper screw welding portion and the enameled wire welding portion are not changed. The method is applied to batch production of products, and the problem of performance failure caused by antenna ridge breakage and feed welding spot cracking is solved.

Description

technical field [0001] The invention belongs to the field of element antenna assembly technology, and in particular relates to a cantilever type element antenna assembly and welding process method. Background technique [0002] The applicant's Chinese patent document CN110492229A discloses a fastening device and fastening method for a multi-ridge dipole antenna. Long working hours required. The array element antenna is composed of different width, narrow, thick, and thin copper array elements (16 pieces in total), and the structure is as follows: figure 1 shown. [0003] At present, during the assembly and test process of the antenna, the applicant found the following problems: [0004] Usually, the method of fixing the antenna ridge is to process the counterbore on the front of the antenna ridge, the screw passes through the counterbore and the non-metallic material on the ridge, and finally install the spring flat washer nut on the reverse side. The narrow antenna ridge...

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Problems solved by technology

[0004]Usually, the method of fixing the antenna ridge is to process the counterbore on the front side of the antenna ridge, the screw passes through the counterbore and non-metallic material on the ridge, and finally install the spring on the reverse side Flat washer nut, the narrow antenna ridge is only fixed in this way, which is prone to stress concentration, and the antenna ridge (and the feeding part) is prone to breakage during vibration

[0005] The feeding part of the antenna is fixed by direct welding between the element and the copper column, and the temperature cycle test is carried out (-40℃±2℃~+75℃±2℃ ℃) process, due to the mismatch between the expansion coefficients of PTFE and copper pillars, the feed solder joints crack and the antenna fails

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