Waveguide-to-microstrip line coupling arrangement and a frequency converter having the coupling arrangement
US4679249A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1985 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Feb 14, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D9/0633
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a waveguide-to-microstrip line coupling arrangement, a microstrip line is placed on an outer surface of a wall of a waveguide which is coupled with the microstrip line via a metallic post connected at its one end to a center strip conductor of the microstrip line and is inserted inside the waveguide via through-holes made in a ground plane of the microstrip line and in the wall of the waveguide where the diameter of the through-hole made in the ground plane is made smaller than that of the through-hole made in the wall of the waveguide. The waveguide has a short-circuited end and the metallic post is placed close to the short-circuited end. The coupling arrangement may be used in a microwave frequency converter having an microwave integrated circuit including a local oscillator and a mixer, where the MIC is located on an outer surface of a longitudinal wall extending from a short-circuited end to an open end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.