Wide band directional coupler for microstrip lines

Details Wide band directional coupler for microstrip lines Wide band directional coupler for microstrip lines

1986-04-25

1987-06-30

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333246, H01P 518

Patent

active

046773991

ABSTRACT:
A wide band directional coupler for microstrip lines has a microstrip line ection whose conductive core is coupled to the core of the main line over a length .lambda./4 (.lambda. being the wave length in a mid portion of the desired pass band). The section has a first fraction parallel to the main line and at a small distance therefrom so as to provide tight coupling and a second fraction diverging from the main line and closed on a matching impedance. The free end of the first fraction is connected to the load and has an extension projecting over a length less than .lambda./16 for forming a microcapacitor tapping energy from the main line.

REFERENCES:
patent: 3315182 (1967-04-01), Woolley, Jr.
patent: 4139827 (1979-02-01), Russell
patent: 4178568 (1979-12-01), Gunton
patent: 4185258 (1980-01-01), Cote et al.
patent: 4216446 (1980-08-01), Iwer

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