Comb wave generation system for electromagnetic compatibility radiation disturbance

Abstract

The invention provides a comb wave generation system for electromagnetic compatibility radiation disturbance. The comb wave generation system comprises a GS-mode multi-quantum well distributed feedback laser module and an odd harmonic suppression module which are electrically connected with a main control module, and a DFB laser transmitter electrically connected with the main control module. The GS mode multi-quantum well distributed feedback laser module comprises a first laser driving current transmitting module with 9.5 GHz coherent light frequency, a first radio frequency amplification module and a direct current bias module; the odd harmonic suppression module comprises a second laser drive current emission module with 19GHz coherent light frequency, a second radio frequency amplification module, a 0-180-degree phase shift circuit module, a dual-drive Mach-Zehnder modulator module and a polarization controller module. The system provided by the invention can generate 10MHz fundamental wave and harmonic wave signals, and stable comb-shaped signals are formed in space after the signals are amplified and shaped.

Description

technical field [0001] The invention belongs to the technical field of laser wave emission systems, and in particular relates to a comb wave generation system for electromagnetic compatibility radiation disturbance. Background technique [0002] The intelligence, miniaturization, and integration of home appliances, automobiles, consumer electronics and other products are inevitable developments. The development of this trend has increasingly strict requirements on the electromagnetic interference of products. At present, no matter in the government procurement plan or the products of private enterprises For research and development, it is clearly required to issue a third-party qualification report above the provincial level, in which electromagnetic interference is an important indicator and included as a mandatory inspection item. [0003] In the system used in the electromagnetic interference detection project, important equipment includes anechoic chambers, test antennas...

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Problems solved by technology

[0003] In the system used in the electromagnetic interference detection project, important equipment includes anechoic chambers, test antennas, cables and receivers, etc., and in all laboratories with qualifications above the provincial level, the radiation test points, instruments and accessories are calibrated at least once a year , due to the complex and time-consuming calibration, but this calibration does not prevent equipment failures during calibration, such as damaged receivers, broken cables, bad connections, bad antennas, etc.

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