Directional coupler having inductor crossing microstrip transmis

Details Directional coupler having inductor crossing microstrip transmis Directional coupler having inductor crossing microstrip transmis

1997-03-11

1998-10-06

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333116, H03H 748, H01P 518

Patent

active

058183078

ABSTRACT:
A directional coupler (300) is formed of a substrate (302) having a microstrip transmission line (304) and an inductor (306) seated perpendicularly across the microstrip transmission line. The windings (312) of the inductor (306) run parallel to the microstrip transmission line (304). One end (308) of the inductor (306) is terminated with a load (314) to reduce reflections while the other end (310) is coupled to a diode (316) and a capacitor (322) resonant at the frequency of interest and providing an output port for the coupler. The radio frequency (RF) signal is inductively coupled from the microstrip transmission line (304) to the windings (312) of the coil and converted through the diode (316) and the capacitor (322) to a voltage output (Vout) at the output port (324).

REFERENCES:
patent: 3440571 (1969-04-01), Simons
patent: 3716806 (1973-02-01), Zelenz
patent: 3904991 (1975-09-01), Ishii et al.
patent: 5448771 (1995-09-01), Klomsdorf et al.

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