Highly decoupled cosited antennas

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed

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343808, 343820, H01Q 2126

Patent

active

047001968

ABSTRACT:
Two cosited omnidirectional biconical antennas are respectively tilted plus nd minus 45 degrees (.+-.45.degree.) with respect to the vertical and, therefore, are perpendicular (90.degree.) with respect to each other to effect polarization mismatch and near field decoupling. In combination with the described antennae orientation, high impedance cable chokes are added in series with the coaxial cable antennae feed lines to suppress induced parasitic rf currents.

REFERENCES:
patent: 2229733 (1941-01-01), Goldmann
patent: 2625655 (1953-01-01), Middlemark
patent: 2709219 (1955-05-01), Schmidt
patent: 3879735 (1975-04-01), Campbell et al.
patent: 4149170 (1979-04-01), Campbell et al.
Arnold; Communications; vol. AP-18, No. 5; Sep. 1970; pp. 697, 698.

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