On-line test method used for surface acoustic wave filter

Abstract

The invention discloses an on-line test method used for a surface acoustic wave filter, which belongs to the technical field of electronic components. According to the invention, parts to be tested are put into the fixture of a temperature test box in batch; the method can automatically test the filter inside a temperature box through channel switch of a test switch; automatic filter test in high and low temperature environments is realized; the technologies of automatic filter identification, detection and screening are realized; automatic filter test in high and low temperature environments is realized; the production efficiency of the filter is improved; supply pressure caused by high and low temperature test is reduced; the scalability is great; and the method is suitable for any model of different fixtures, and is versatile.

Description

technical field [0001] The invention belongs to the technical field of electronic components and specifically discloses an online testing method applied to a surface acoustic wave filter. Background technique [0002] Fba filters are widely used in the second and third generation mobile communications, remote control, telemetry technology, biochemistry, medicine and other fields. The testing of Fba filters also has many problems that need to be solved urgently for R&D and production units: [0003] 1) The application of Fba filters to research and development equipment requires accurate research and development and strict guarantees to ensure the normal operation of the equipment, which puts forward new requirements for filter testing; due to the different environments in which filters are used, the requirements for filters are also different. Similarly, the harsher the application environment of the filter, the more stringent the parameter specification requirements of the ...

AI Technical Summary

Problems solved by technology

[0003] 1) The application of Fba filters to research and development equipment requires accurate research and development and strict guarantees to ensure the normal operation of the equipment, which puts forward new requirements for filter testing; due to the different environments in which filters are used, the requirements for filters are also different. Similarly, the harsher the application environment of the filter, the more stringent the parameter index requirements of the filter, and the more difficult and complicated the filter test before application

Tests at simulated low temperature (-55°C) and high temperature (125°C) are required, making the Fba filter test more complicated and cumbersome

[0004] 2) Due to the need for high and low temperature screening, and the need to test the Fba filter parameters at various temperature points, in the case of a large number of Fba filters, on the one hand, the efficiency of manual testing is too low, and a large number of testing and recording personnel are required , and it is very inconvenient to perform manual operation at various temperature points; on the other hand, manual testing inevitably brings errors caused by various human factors, which is not conducive to the guarantee of device performance parameters

In the production process, due to the large number of filter specifications, testing is required, and the workload of testing is very heavy.

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