This Technical Report specifies a compensation method of Cu linewidth according to impeadance reduction by using noise suppression materials (hereafter referred to as NSMs) for FPCBs. This Technical Report presents an optimum result for maintaining a designated performance of FPCBs by using NSMs. It also indicates a measuring method for an impedance variation of FPCBs using NSMs with the prevailing TDR (time domain reflectometry) method. This method is resticted to measuring only the variation of an impedance value in accordance with the variation of the Cu linewidth by using NSMs for FPCBs. This report, however, neither determines nor indicates the structure or material of FPCBs.
IEC TR 63017:2015 Referenced Document
IPC 2141A-2004 Design Guide for High-Speed Controlled Impedance Circuit Boards
IEC TR 63017:2015 history
2015IEC TR 63017:2015 Flexible printed circuit boards (FPCBs) - Method of compensation of impedance variations