Analysis Of Brazing Deformation For Planar Slotted Array Antenna

The deformation deviation in the planar slotted array antenna brazing process isone of the major factors that affect the antenna manufacturing precision, which on theelectrical properties of the antenna has a great influence. This paper has a numericalsimulation analysis of the vacuum brazing of the planar slotted array antenna.This paper simulates the process of the planar slotted array antenna brazing. Andestablished a geometric model of the antenna brazing with the finite element analysissoftware ANSYS. First, get the temperature changes of the antenna in the vacuumbrazing process. And then simulate the phase transition of the solder with a use of themethod of element birth-death technique. According to the results of the temperaturefield as the load calculated the deformation and stress field distribution of the antennabrazing.This paper analyzed the main factors which affecting the deformation of antenna,such as the coefficient of the thermal expansion of solder and substrate. Find out theregular pattern of these factors impacting the deformation. From the developing andselecting solder and thermal processing technology options put forward somesuggestions to improve the welding quality and shorten the production cycle. By theanalysis of brazing thermal processing technology, the use of improved cooling methodscan effectively reduce the brazing deformation. Optimization of the cooling curveanalysis, the sectional type of cooling curve can get a better braze quality.Focusing on the vacuum brazing of planar slotted array antenna, this paperproposed some improvements to reduce brazing deformation and improve theperformance of antenna, which has certain significance.