What is PD IEC/TR 63018 — Signal loss variations in FPCBs using NSMs?  
PD IEC/TR 63018 is an international standard that discusses flexible printed circuit boards (FPCBs).
PD IEC/TR 63018 is a technical report that specifies a guideline for the improvement of signal loss by using noise suppression materials (hereafter referred to as NSMs) for FPCBs.
PD IEC/TR 63018 also indicates a measuring method of signal loss variations of FPCBs using NSMs using network analyzer equipment. In addition, this method only measures the value of the signal loss variation by using NSMs for FPCBs.
Note: PD IEC/TR 63018 however, neither determines nor indicates the structure or material of FPCBs.
Who is PD IEC/TR 63018 — Signal loss variations in FPCBs using NSMs for? 
PD IEC/TR 63018 on Signal loss variations in FPCBs using NSMs is useful for: 
- Manufacturers and designers of FPCB’s
- Industrial electronics, aerospace industry
- IT and telecom
- Automotive industry
Why should you use PD IEC/TR 63018 — Signal loss variations in FPCBs using NSMs?  
In recent years, since the use of smartphones, and other mobile and display devices has increased significantly, the supply of FPCBs has also been largely extended. Specifically, since the FPCB devices seek high-speed performance, the requirements with respect to electromagnetic interference (EMI) suppression in the devices have also grown in importance. Therefore, FPCBs used inside smartphones employ noise suppression materials (NSMs) to solve EMI problems.
PD IEC/TR 63018 describes the test method in order to measure the proper signal loss value using noise suppression materials, in order to obtain the correct data, direct hand contact to the specimen.
PD IEC/TR 63018 presents you with informative guidance about flexible printed circuit boards, as FPCBs used with high frequency, result in creating the more significant problem of signal loss.
It makes sure that the demand of users of FPCBs, who have the requirement for the lowest value of signal loss by using NSMs, gets fulfilled by the suppliers of FPCBs by anticipating an appropriate design in order to achieve an adequate signal loss value.
