Four-post quadrature coupler suitable for monolithic implementation
US5128638A · kind A · utility
5Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1990 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Dec 3, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/20
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for creating a four-port quadrature coupler suitable for monolithic implementation which involves connecting two ports of a balun, suitable itself for implementation in monolithic microwave integrated circuits, to two separate phasing networks. A device exhibiting the proper four-port quadrature coupler characteristics within a MMIC structure results, with wide bandwidth exceeding one octave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.