MMW microstrip coupler having movable test probe

Details MMW microstrip coupler having movable test probe MMW microstrip coupler having movable test probe

1988-02-11

1989-01-03

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

324 58R, 333 33, H01P 519, G01R 2704

Patent

active

047959894

ABSTRACT:
A microwave and millimeter wave hybrid or monolithic microstrip test probe assembly provides a noninvasive radio frequency test point in a microstrip circuit. The probe assembly comprises a microstrip coupler. (12) adjacent a microstrip line (10) in the circuit for sampling a small amount of microwave energy propagating along said microstrip line. A stripline circuit (20, 22 and 24) is connected to the microstrip coupler. The stripline circuit includes a pad area (24) and a probe (26) moveable to overlay the pad area. The probe forms a ground plane with respect to the pad area, and a coaxial line (34) has an outer conductor connected to the probe and an inner conductor projecting through a hole in the probe. The probe assembly provides an RF test point within a microstrip circuit which allows an accurate, calibrated and repeatable means of sampling a microstrip signal while not affecting the normal performance of the hybrid or monolithic circuit. The probe (26) is removable and is introduced into the circuit for testing purposes.

REFERENCES:
patent: 3012210 (1961-12-01), Nigg
patent: 3245013 (1966-04-01), Forge

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