High isolation cross-over for canceling mutually coupled signals

Details High isolation cross-over for canceling mutually coupled signals High isolation cross-over for canceling mutually coupled signals

1998-01-22

2000-02-22

Lee, Benny

Wave transmission lines and networks

Plural channel systems

333128, 333136, 333246, H01P 308, H01P 512

Patent

active

060284943

ABSTRACT:
A stripline isolation cross-over is configured to cancel signals that may be mutually coupled at cross-over points between adjacent stripline networks within a compact multilayer signal distribution architecture, such as one feeding elements of phased array antennas, without a shielding layer between adjacent signal distribution networks. The signal distribution networks includes layers of stripline, patterned on opposite sides of a dielectric layer. Wherever the stripline layers mutually overlap, they are oriented at right angles to one another, and one of the striplines is configured as a pair of power dividers, connected back-to-back via stripline interconnect passing the other stripline layer, to form a signal splitting-recombining stripline pair. The locations where the sections of interconnect cross the second stripline are spaced apart by a half-wavelength of transported signals, so that any signal mutually coupled between the two striplines at each cross-over point will combine antiphase with itself, thereby effectively preventing mutual interference between the two networks.

REFERENCES:
patent: 3104363 (1963-09-01), Butler
patent: 5003273 (1991-03-01), Oppenberg
patent: 5021755 (1991-06-01), Gustafson
patent: 5153602 (1992-10-01), DuBois et al.
patent: 5296651 (1994-03-01), Gurrie et al.
patent: 5600285 (1997-02-01), Sachs et al.

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