Six-port reflectometer

Details Six-port reflectometer Six-port reflectometer

1984-04-18

1986-02-18

Gensler, Paul

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

333109, 333113, G01R 2706

Patent

active

045715459

ABSTRACT:
A six-port reflectometer includes first, second and third forward directional couplers to transmit power from a source for reflection at a measurement port. The couplers also divert incident and reflected wave samples for subsequent measurements. A fourth forward directional coupler receives samples of incident and reflected waves from the second coupler, the reflected waves being received directly and the incident waves via a waveguide appropriate to equalize wave path lengths. The first coupler is connected to a matched load and the third coupler to a short circuit. The first coupler may be a 6 dB device and the second, third and fourth couplers 3 dB devices. Power detectors are connected to the first, third and fourth couplers. The reflectometer has the band-width of its components.

REFERENCES:
patent: 4489271 (1984-12-01), Riblet
Weidman, A Semiautomated Six-Port for Measuring Millimeter-Wave Power and Complex Reflection Coefficient, IEEE Trans. on MTT, Dec. 1977, pp. 1083-1085.

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