Flexible connection process method and tool of radio frequency coaxial rotary microstrip

Abstract

The invention provides a flexible connection process method of a radio frequency coaxial rotary microstrip. The method is characterized in that a radio frequency coaxial core wire is fixedly connected with a microstrip line through an omega-shaped interconnection connecting line, and comprises the following steps of: S1, preparing the omega-shaped interconnection connecting line by adopting a forming tool, and preparing a high-temperature soldering lug material; s2, placing the omega-shaped interconnection connecting line, the high-temperature soldering lug material and the radio frequency coaxial core line in a spot welding area of a spot welding tool; s3, connecting the omega-shaped interconnection connecting line, the high-temperature soldering lug material and the radio frequency coaxial core line in a resistance spot welding mode; s4, performing gold removal processing on the microstrip line; and S5, connecting one end, which is not welded with the radio frequency coaxial core lilne, of the omega-shaped interconnection connecting line with the microstrip line in a soldering iron tin soldering mode. According to the invention, interconnection of the coaxial core line and the microstrip line is realized by means of high-temperature spot welding and low-temperature tin soldering, so that the microwave transmission performance requirement is met, and the advantages of high reliability, high fatigue resistance and high universality are achieved.

Description

technical field [0001] The invention belongs to the technical field of microwave component assembly, and in particular relates to a soft connection process method and tooling for microwave component radio frequency coaxial to microstrip. Background technique [0002] With the continuous improvement of equipment performance requirements, the application of radio frequency microwave modules / components is becoming more and more extensive. , is the key factor to ensure connection reliability and transmission performance. How to realize the highly reliable connection of radio frequency coaxial to microstrip is a problem widely studied by many scholars. [0003] In the prior art, the research on the connection method of coaxial to microstrip is mainly focused on the inside of the radio frequency module, and the connection methods include soldering connection and gold band wrapping welding. However, as microwave component products become more and more complex, the coaxial core wir...

AI Technical Summary

Problems solved by technology

However, as microwave component products become more and more complex, the coaxial core wires of the input and output ports of the assembled microwave module need to be further connected to the external microstrip circuit, which is different from the internal connection of the module. This connection method involves The structure and materials are more complex, and the material parameters used in the microwave module box, microstrip substrate, and microwave component box may be quite different. alternating stress

[0004] In the connection method of RF coaxial to microstrip, although the soldering connection method is beneficial to the guarantee of microwave transmission performance, it is generally used for the connection inside the module. This process method is a hard connection for the connection between different modules or components. In the subsequent environmental service process, due to the difference in linear expansion coefficient between different modules or components, alternating stress and creep deformation will be generated at the solder joints, which will eventually lead to connection failure

The method of gold-belt ring-wrapped welding has high requirements on the coating on the surface of microstrip lines and RF coaxial core wires, and there is a certain risk of ablation when this interconnection process is used on RF microstrip boards, and the process control is difficult. For microwave components with complex structures and large sizes, the rigidity and connection reliability of the gold belt ring package interconnection are difficult to meet the service requirements of the product

At the same time, there is no relevant research on the highly reliable interconnection process method between the module coaxial core wire and the external microstrip line

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