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Test method for immunity of vehicles to narrow-band radiated electromagnetic energy - External radiation source method

1. Introduction to the test

After the transformation of the automobile industry, the additional functions of automobile electronics have become one of the main axes of automobile development, but at the same time, many EMC problems have also arisen. The radio, communication system, motor, audio, high-speed switching device, and microprocessor on the motherboard in the vehicle may all generate electromagnetic interference (EMI). In addition, many important control system functions such as braking, transmission, steering, and monitoring have been electronically controlled. The performance of safe driving of vehicles is also closely related to the electromagnetic environment in which they work. That is to say, if the electromagnetic compatibility of the whole vehicle is too poor, once it is subjected to external electromagnetic interference, the light one may affect the product performance, and the severe one may directly affect the driving safety and cause personal injury. Due to the very high specificity of the vehicle's safety performance requirements, the severity of the EMC standard of the vehicle is often several times higher than that of general electronic products.

ISO 11451-2, outside the vehicle radiation source method, 100KHz~18GHz;

2. System connection diagram

3. Typical configuration

Vehicle radio frequency immunity - external radiation source method [according to GBT 33012.2/ISO 11451-2]
serial number	product	illustrate	brand
1	SMB100B	Signal source, 8KHz~6GHz	Rohde&Schwarz/Germany
2	OSP220	Automatic RF switch control unit, with 3 control card slots on the back of the basic version and 2 upgradeable card slots	Rohde&Schwarz/Germany
3	10000A225A-A	LF power amplifier, 10 kHz~225 MHz, 10000 W, air-cooled	AR/ United States
4	BBA150-BC3000	Single-band power amplifier, 80 MHz~1 GHz, 3000 W, air-cooled	Rohde&Schwarz/Germany
5	BBA150-D800E400	Dual-band power amplifier, 0.69 GHz~3.2 GHz, 800 W; 2.5GHz~6GHz, 400W air-cooled	Rohde&Schwarz/Germany
6	NRP6AN	Average power sensor, 8kHz~6GHz, 100pw~200mW, N(m)	Rohde&Schwarz/Germany
7	S35012/41	Stripline, frequency range: 10kHz~30MHz	FSA/ Germany
8	S12014/5	Log periodic directional antenna, 20 MHz~220 MHz	FSA/ Germany
9	S23011/4	Log periodic antenna, 220 MHz~2000 MHz	FSA/ Germany
10	BBHA 9120 J	Broadband Double Ridge Horn Antenna (with Bracket), 800MHz~6.2GHz	Schwarzbeck/Germany
11	EFS-10	Field strength probe set, 10kHz~9.25GHz, 0.5~500V/m	Frankonia/Germany
12	EMC32-S	EMS test software, including license	Rohde&Schwarz/Germany
13	SAC10	10-meter semi-anechoic chamber	Frankonia/Germany

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