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