Patent ID: 8928546
Filing Date: 2015-01-06
Classification: H01Q

Abstract:
1. An antenna for producing an omni-directional pattern and using all frequencies of a frequency range simultaneously, comprising: first and second electrically conductive elements disposed coaxially relative to a central axis; said first element having a first surface of revolution about said axis, said first surface of revolution tapering radially outwardly while extending axially away from said second element to terminate at a first axial end of said first element; said second element having a second surface of revolution about said axis, said second surface of revolution tapering radially outwardly while extending axially toward said first element to terminate at a first axial end of said second element, and said second surface of revolution overlapping said first surface of revolution radially and axially; and said second element having a third surface of revolution about said axis that extends radially outwardly as far as said second surface of revolution; wherein said second and third surfaces of revolution have respectively different shapes.