Center fed vertical gain antenna

Details Center fed vertical gain antenna Center fed vertical gain antenna

H - Electricity

01

Q

351/33, 351/49

H01Q 9/16 (2006.01) H01Q 11/04 (2006.01)

Patent

CA 1053794

CENTER FED VERTICAL GAIN ANTENNA ABSTRACT An improved gain antenna which is vertically mounted to a horizontal ground plane is disclosed. The gain antenna substantially consists of a radiating conductor having first and second ends and a centrally located feed point, and phasing apparatus electrically connected to the conductor for producing a predetermined current distribution. The phasing apparatus produce shortened out of phase current sections along the length of the conductor. Centrally feeding the gain antenna results in an improvement in the bandwidth and input impedance. The conductor consists of a linear section of coaxial cable which extends vertically from the horizontal ground plane to approximately the central feed point and a solid conductor rod which extends vertically upwardly from the central feed point. Current phasing apparatus having improved bandwidth and reactance characteristics are also described. The phasing apparatus consist of pairs of metallic cylinders which are concen- trically positioned around the conductor with each cylinder having one end electrically connected to the conductor.

247025

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