Testing device and debugging method for coupling sensitivity of mobile terminal

Abstract

The invention provides a coupling sensitivity testing device and a method for testing the coupling sensitivity by using the device, wherein, the device comprises a signal detector, a blocking circuit module and a combiner, wherein, the signal detector is used for contacting each circuit operating point of a mobile terminal to be tested in the testing process; a first terminal of the blocking circuit module is connected with the signal detector by a cable, the blocking circuit module is used for removing a DC component of an operating point signal from the signal detector; the combiner is provided with a first distribution port, a second distribution port and a combination port, the first distribution port is connected with a signal generator by the cable, the second distribution port is connected with a second terminal of the blocking circuit module by the cable, and the combiner is used for combining a testing signal from the signal generator and the operating point signal without the DC component and for sending the combined signal to an error-rate testing unit. Therefore, the coupling sensitivity testing device and the method for testing the coupling sensitivity by using the device can adjust the coupling sensitivity simply and easily, thereby finding out a source of the disturbance thoroughly and effectively.

Description

technical field [0001] The present invention relates to the field of mobile communication, more specifically, to a testing device and a debugging method for debugging the coupling sensitivity of a mobile terminal. Background technique [0002] Some useless signals of the mobile phone itself will cause interference to the TV unit and reduce the receiving performance of the mobile phone TV. In particular, some standards of mobile TV such as DVB-H in Europe (frequency from 470MHz to 858MHz, bandwidth 8MHz), low-band frequency is low, bandwidth is very wide, and the baseband processor of the mobile phone itself works at a high speed, and some have exceeded 200M , so the DVB-H low frequency band is more susceptible to interference. [0003] The specific manifestations that DVB-H low-frequency bands are more susceptible to interference are as follows. Usually, the mobile TV cable test (that is, the signal output of the mobile TV generator to the mobile phone receiving port is a c...

AI Technical Summary

Problems solved by technology

[0006] However, when there are many sources of interference, it is more troublesome to use this method

This is because, if there are strong interference sources a, b, and c at the same time, during the test, because of the existence of interference sources b and c, even if the interference source a is processed, when testing the coupling sensitivity of mobile TV, due to b, There is interference in c, so it is very likely that the sensitivity of mobile phone TV coupling has not improved, so the engineer judges that a is not the source of interference, and this judgment is incorrect

In addition, some circuits such as data connectors have many pins, and the pins are relatively dense, so it is inconvenient to use the elimination method to find the source of interference.

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