Multi-band antenna with end mounted loading section

Claim 1

AN ANTENNA COMPRISING A RADIATOR HAVING AN ELECTRICAL LENGTH SUBSTANTIALLY EQUAL TO A QUARTER WAVE LENGTH OF A PREDETERMINED FREQUENCY, AN INDUCTOR CONNECTED TO SAID RADIATOR AT OR NEAR THE END OPPOSITE THE FEED POINT, A LOADING CAPACITOR CONNECTED IN SERIES WITH SAID INDUCTOR AND SAID RADIATOR, SAID INDUCTOR HAVING A HIGH IMPEDANCE AND ACTING AS A RADIO FREQUENCY CHOKE AT SAID PREDETERMINED FREQUENCY, SAID INDUCTOR AND SAID CAPACITOR ACTING AS AN ADDITIONAL ELECTRICAL LENGTH TO SAID RADIATOR AT A LOWER FREQUENCY THAN SAID PREDETERMINED FREQUENCY, THUS PROVIDING OPERATION ON TWO DIFFERENT FREQUENCIES, AND A SECOND INDUCTOR WITH A CAPACITOR IN SERIES THEREWITH CONNECTED IN SERIES WITH SAID FIRST MENTIONED INDUCTOR AND CAPACITOR, SAID SECOND INDUCTOR BEING OF A VALUE TO ACT AS A RADIO FREQUENCY CHOKE AT SAID LOWER FREQUENCY AND TO ACT AS AN ADDITIONAL ELECTRICAL LENGTH TO SAID RADIATOR AND SAID FIRST INDUCTOR AND CAPACITOR AT A STILL LOWER FREQUENCY THAN SAID LOWER FREQUENCY, THUS ALLOWING OPERATION ON THREE FREQUENCIES, SAID CAPACITORS COMPRISING SPLIT RINGS HAVING SPOKES ATTACHED THERETO AND EXTENDING RADIALLY THEREFROM, SAID RINGS BEING DISPOSED CONCENTRIC TO SAID RADIATOR.