End launched microstrip or stripline to waveguide transition with cavity backed slot fed by offset microstrip line usable in a missile
US5724049A · kind A · utility
13Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1994 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | May 23, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q13/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A low profile, compact microstrip-to-waveguide transition which utilizes electromagnetic coupling instead of direct coupling. The end of the waveguide is terminated in a cavity backed slot defined in a groundplane formed on a dielectric substrate. The slot is excited by a microstrip line defined on the opposite side of the substrate, offset from the slot centerline. A cavity covers the substrate on the microstrip side, and is sized so that no cavity modes resonate in the frequency band of operation. The transition is matched by appropriate selection of the length of the slot and the length and position of the microstrip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.