A survey of the very wide band and frequency independent antennas-1945 to the present

Abstract

Thc last few years havc \\'itnessed major developm ents in t he fi eld of a ntenn as whi ch are s uitab le for use over a ran ge of frequ en cies. Operatin g bandwidths t hat \\'ere co nsid ered an impossibility as little a s seven y ears ago are now readi ly ava ilable. T o trace t hese developments, a brie f historical s urvey of t h e li terature in t h is fi eld since the Second World War, is presented .