a predetermined number of {HEAD ~ microstrip lines} disposed on {TAIL ~ a first surface} of said substrate 
disposed on
a predetermined number of { HEAD ~ microstrip lines } disposed on { TAIL ~ a first surface } of said substrate
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH