Production technology of Lange coupler

Abstract

The invention discloses a production technology of a Lange coupler. The production technology comprises a leader line widening electroplating technology and a leader line gold wire pressure point bonding technology, wherein the leader line widening electroplating technology comprises the following steps: firstly electroplating leader lines on a clean ceramic substrate, then widening electroplating at the gold wire pressure point positions of the leader lines, carrying out gold wire lead bonding at widened leader line positions, and enabling gold wire pressure points to be fixedly connected with corresponding gold lines of the Lange coupler by regulating and controlling the bonding parameters such as pressure, temperature and time. The production technology is simple in technology, low in cost and high in welding reliability, the microwave characteristics of the Lange coupler are adjusted by controlling the quantity of gold wires and the bridging arch rise of gold wires, the Lange coupler manufactured by using process combination parameters is used for amplifier design, the Lange coupler can work under the condition of 50 W stably, the input and output standing wave within 6 to 18 GHz is smaller than 1.4 dB, the in-band loss is smaller than 0.35 dB, and the production technology has excellent index performances.

Description

technical field [0001] The invention relates to the field of Lange coupler processing and manufacturing, in particular to a Lange coupler production process. Background technique [0002] In the microwave and millimeter wave component system, the microwave characteristics are often affected by the uncertain impedance parameters of the die and the increase in the number of connected components. Therefore, adjusting power distribution and synthesis is very important for high-performance microwave characteristic output. A common practice is to fine-tune the matching circuit by adjusting the capacitance value, changing the length of the bonding wire, radian, etc., so that the die can perform better. The Lange coupler, with its advantages of compact structure, flexible external load resistance, wide passband, etc., is used in the power synthesis design of the broadband matching power tube with high volume requirements, and can be used for power distribution and power synthesis. ...

AI Technical Summary

Problems solved by technology

[0003] Since the parasitic inductance of the connected gold wire affects microwave performance, the high-efficiency connection between microstrip lines is directly related to the improvement of performance, and gold wire bonding is a key process of chip assembly, bonding position, bonding time and power The size and so on have a crucial impact on the bonding strength of the wires, and even if one of the connecting gold wires fails, it will affect the normal operation of the entire circuit system

The existing Lange coupler is manufactured using the air bridge process, adding holes and air bridges makes the process more difficult and the processing cost is high

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