Novel automobile electronic part radio frequency electromagnetic field radiation immunity testing system

Abstract

The invention relates to a novel automobile electronic part radio frequency electromagnetic field radiation immunity testing system. The system comprises a signal modulation device used for generatinga modulation signal, a radio frequency switch box, at least two power amplifiers, at least two directional couplers and an antenna, wherein the radio frequency switch box is provided with an input end and at least two output ends; the input end of the radio frequency switch box is connected with the modulation device; frequency ranges corresponding to the output ends one to one are set in the radio frequency switch box; when the frequency of a modulation signal input by the input end is in the frequency ranges, the radio frequency switch box selects the corresponding output end to output themodulation signal; the power amplifiers are connected with the output ends of the radio frequency switch boxes in a one-to-one correspondence mode and used for amplifying the modulation signal and outputting the amplified signal; the directional couplers are correspondingly connected to the output ends of the power amplifiers one to one and used for attenuating the amplified signal and outputtingthe attenuated signal; the antenna is provided with at least two input ends which are connected with the output ends of the directional couplers in a one-to-one correspondence mode, and is used for converting the attenuated signal into electromagnetic waves.

Description

technical field [0001] The invention relates to the technical field of electromagnetic field radiation testing, in particular to a novel radio frequency electromagnetic field radiation immunity testing system for automotive electronic components. Background technique [0002] The radio frequency electromagnetic field radiation immunity test system of automotive electronic components needs to be composed of multiple sets of power amplifiers and antennas. The existing test system consists of a power amplifier and a set of antennas. When the test frequency reaches the limit frequency range of the power amplifier, It is necessary to manually replace the power amplifier and re-wire, the operation is quite troublesome and the efficiency is extremely low. The existing test system has many connections, and the connection port of the cable is easy to be poorly connected, resulting in impedance mismatch. The reflected energy will cause damage to the equipment in the system over time, ...

AI Technical Summary

Problems solved by technology

[0002] The radio frequency electromagnetic field radiation immunity test system of automotive electronic components needs to be composed of multiple sets of power amplifiers and antennas. The existing test system consists of a power amplifier and a set of antennas. When the test frequency reaches the limit frequency range of the power amplifier, Need to manually replace the power amplifier, re-wiring, the operation is quite troublesome, and the efficiency is extremely low

The existing test system has many connections, and the connection port of the cable is easy to be poorly connected, resulting in an impedance mismatch. The reflected energy will cause damage to the equipment in the system over time, and there is a greater safety risk.

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