The pairs of stubs impart changes in {HEAD ~ the impedance} of {TAIL ~ the resulting antenna} 22 
The pairs of stubs impart changes in { HEAD ~ the impedance } of { TAIL ~ the resulting antenna } 22
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH