Microstrip fed printed dipole with an integral balun and 180 deg

Details Microstrip fed printed dipole with an integral balun and 180 deg Microstrip fed printed dipole with an integral balun and 180 deg

1987-08-03

1989-01-24

Sikes, William L.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343822, 343859, 333 26, H01Q 138, H01Q 916

Patent

active

048003930

ABSTRACT:
An improved element for use in an electrically steered antenna array is disclosed comprising a dipole, an integral balun and a 180.degree. phase shift bit. The arrangement utilizes printed circuit techniques throughout using an unbalanced microstrip for connection to electrical circuitry, a balun for transitioning from unbalanced microstrip to a balanced dipole antenna and includes a low loss 180.degree. phase shift bit formed by the use of a branched feed network including two diodes whose conductive states determine the sense of antenna excitation, and produce the equivalent of a 180.degree. phase shift bit.

REFERENCES:
patent: 3623112 (1971-11-01), Rupp

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