Surface mounted directional coupler

Details Surface mounted directional coupler Surface mounted directional coupler

1995-06-30

1996-07-23

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333238, H01P 518

Patent

active

055393624

ABSTRACT:
A microwave directional coupler comprises a coupler dielectric board which is mounted substantially perpendicular to the surface of a parent circuit board. Upper interdigital elements are disposed on opposing surfaces of the coupler dielectric board. The coupling between the upper interdigital elements determines the odd mode impedance Z.sub.oo of the microwave directional coupler. Lower interdigital elements are also disposed on opposing surfaces of the coupler dielectric board. The lower interdigital elements are connected to ground and are arranged so that coupling between the lower interdigital elements and the upper interdigital elements determines the even mode impedance Z.sub.oe of the microwave directional coupler.

REFERENCES:
patent: 4027254 (1977-05-01), Gunton et al.
patent: 4394630 (1983-07-01), Kenyon et al.
patent: 4823097 (1989-04-01), Konishi et al.
patent: 5373266 (1994-12-01), Lenzing et al.
patent: 5486798 (1996-01-01), Veitschegger

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