Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1976-09-20
1978-02-14
Gensler, Paul L.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
333 11, G01S 738, H01P 512
Patent
active
040742652
ABSTRACT:
An electronic countermeasures system for use at an operating frequency, f, includes a receiving antenna, a transmitting antenna, and first and second turnstile junctions, in which each of the junctions comprises the geometry of four rectangular ridged waveguides arranged as arms in the shape of a cross, and a fifth cylindrical quadridge waveguide opening into the common intersection of said arms and extending orthogonal to such formed cross and with each of two opposed ones of the waveguide arms including a short circuit termination, the effective distance between such short circuit terminations being equal to one-half wavelength at the operating frequency. Included in this combination are means for coupling the output of the receiving antenna to the fifth waveguide means of the first junction serving as an input; means for coupling the transmitting antenna input to the fifth waveguide means of the second junction serving as an output; first signal processing means coupled between one arm of said first junction and the corresponding input arm of said second junction; and second signal processing means coupled between the remaining arm of said first junction and the remaining corresponding arm of said second junction.
REFERENCES:
patent: 2686901 (1954-08-01), Dicke
patent: 3315183 (1967-04-01), Bunn et al.
patent: 3383630 (1968-05-01), Kuroda
Allen, The Turnstile Circulator,IRE Trans. on MTT, 10/56 p. 223 cited.
Gensler Paul L.
Goldman Ronald M.
Litton Systems Inc.
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