Six-port reflectometer
US4571545A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1984 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Apr 18, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.