Apparatus for performing Raman analysis may include a laser source module, a beam delivery and signal collection module, a spectrum analysis module, and a digital signal processing module. A protection protocol is provided that utilizes a destination-to-source communication channel to establish a source-to-destination protection route. At least one of these ingredients is a sterically hindered polyamine, preferably formed from an active hydrogen functional compound and an amineacid ortho- or meta-substituted cyclic compound. The first feed conductor is disposed on the first surface corresponding to the annular groove, wherein the first feed conductor couples the ground element to feed a current signal. A tip 13 of one of the two plate members 12 is folded to overlap a tip 14 of the other plate member 11.