Coupler with waveguide transition for an antenna in a radar-based level measurement system
US7453393B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2005 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Aug 28, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/88
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A mechanism for coupling a coaxial waveguide to another waveguide. The mechanism includes a lower or matching waveguide and an impedance transformer. A coaxial port couples the coaxial waveguide to the matching waveguide. The matching waveguide has a waveguide impedance which is close to the impedance of the coaxial waveguide. This arrangement allows matching between the coaxial waveguide and the matching waveguide over a wider frequency band. The impedance transformer couples the matching waveguide to the other waveguide. The impedance transformer comprises a single-stage, double-stage, or multi-stage transformer. The mechanism is suitable for coupling an antenna to a coaxial cable interface in a radar or microwave based level measurement or time of flight ranging systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.