Power bearing capacity testing method for surface mounting passive microwave circuit

Abstract

The invention discloses a power bearing capacity testing method for a surface mounting passive microwave circuit. The testing method includes the steps of calculating peak current in a simulation mode when power of a to-be-tested microwave circuit set breaks through, choosing a short circuit transformer, connecting the short circuit transformer with the to-be-tested microwave circuit set to form a loop, obtaining short circuit current distribution of the to-be-tested microwave circuit set to find out a microwave circuit U corresponded by the position of the largest short circuit current, accessing the microwave circuit U to the loop to obtain the short circuit current distribution, and measuring out nominal voltage of the microwave circuit corresponded by the position of the short circuit current and a power bearing capacity value on the condition of short circuit peak current. The testing method divides a short circuit test under total power into a low-voltage large current test and a short circuit test of a single to-be-tested device under high voltage, so that test of the microwave circuit power bearing capacity can be finished on a low-power test platform through a simulation method and an analogue method, and the testing method is suitable for the batch test and is beneficial for improving production efficiency of the surface mounting passive microwave circuit.

Description

technical field [0001] The invention relates to a method for testing the power bearing capacity of a surface mounted passive microwave circuit. Background technique [0002] With the development of microwave technology, the design of microstrip circuits and systems has gradually become the design and application of transmission lines, monolithic microwave integrated circuits and microwave passive circuits. Surface mount is an important aspect of the development of microwave devices. The series of miniaturized surface mount microwave devices mainly include power splitters, couplers, 90-degree bridges, etc., which meet the needs of wireless communication, navigation, radar and other electronic equipment, and have broad market prospects. [0003] Before the surface-mounted passive microwave circuit leaves the factory or is put into use, its power withstand capability must be tested and marked with an inscription. Because, during the use of the microwave circuit, once the power...

AI Technical Summary

Problems solved by technology

Because, during the use of microwave circuits, once the power exceeds its power bearing capacity, it will break down the device, mess up the device, and even affect the normal use of the entire microwave communication system.

[0004] However, the traditional microwave circuit power withstand capability test method obviously cannot meet the requirements of each device under test, so it is impossible to test the power withstand capability of microwave circuits in batches. The traditional microwave circuit power withstand capability test method limits the surface mount passive Mass Production Efficiency of Microwave Circuits

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