Besides, {HEAD ~ transmission loss} of {TAIL ~ high frequency signals} is caused by neigther through holes or via holes, and is effectively suppressed 
Besides , { HEAD ~ transmission loss } of { TAIL ~ high frequency signals } is caused by neigther through holes or via holes , and is effectively suppressed
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH