Method of optimizing the design of an electronic device with respect to electromagnetic emissions based on frequency spreading introduced by hardware, computer program product for carrying out the method and associated article of manufacture

摘要

There is described a method of optimizing the design of an electronic device with respect to electromagnetic emissions based on frequency spreading. With the method, a designer can add frequency spreading with specific parameters by hardware. The resulting frequency spread signal can be observed. The designer can thus evaluate the reduction in electromagnetic emission level, and repeat this process by iteratively applying frequency spreading each time with specific parameters but without having to modify the design of the device and to generate another prototype of the device.

主权项

1. A method of optimizing a design of an electronic device with respect to electromagnetic emissions based on frequency spreading, the method comprising:
defining an initial design of the device; generating a prototype of the device according to the initial design; operating the device to cause emission of an electrical signal at by the device; applying frequency spreading to the electrical signal according to an initial set of frequency spreading parameters, suitable to reduce electromagnetic emissions of the device, by mixing said electrical signal with a frequency spread signal at hardware level; checking whether the frequency spread electrical signal passes a given electromagnetic compatibility, EMC test; if the EMC test is passed, then modifying the design to introduce a frequency spreading feature with respect to the set of frequency spreading parameters; else, repeating applying frequency spreading to the electrical signal and checking whether the frequency spread signal passes the EMC test with respect to another set of frequency spreading parameters, different from the initial set of frequency spreading parameters, and modifying the design to introduce a frequency spreading feature with respect to said other set of frequency spreading parameters if the EMC test is passed, wherein the optimizing the design of the electronic device is used to manufacture the electronic device.