{HEAD ~ A superconductive array antenna system} provides {TAIL ~ a substantial improvement} of gain, in the range of from about 5 db to over 20 db, at frequencies in excess of 20 gigahertz, and preferably in the range from 40 to 100 gigahertz and beyond 
provides
{ HEAD ~ A superconductive array antenna system } provides { TAIL ~ a substantial improvement } of gain , in the range of from about 5 db to over 20 db , at frequencies in excess of 20 gigahertz , and preferably in the range from 40 to 100 gigahertz and beyond
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