said source of {TAIL ~ microwave energy} and {HEAD ~ said directional, directable microwave antenna} physically forming a unitary assembly 
said source of { TAIL ~ microwave energy } and { HEAD ~ said directional , directable microwave antenna } physically forming a unitary assembly
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH