the electrode is located close to a portion where {HEAD ~ the electric field intensity} generated by {TAIL ~ the electromagnetic waves} becomes strong in the antenna when the electromagnetic waves are fed to the antenna 
generated by
the electrode is located close to a portion where { HEAD ~ the electric field intensity } generated by { TAIL ~ the electromagnetic waves } becomes strong in the antenna when the electromagnetic waves are fed to the antenna
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH