RF MEMS switch loop 180° phase bit radiator circuit
US6674340B2 · kind B2 · utility
15Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Apr 11, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/38
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A switched loop RF radiator circuit, comprising a radiator element, a RF input/output (I/O) port, and a balun coupled between the radiator element and the (I/O) port. The balun includes a 180° switched loop circuit having transmission line legs coupled to a balun transition to provide a selectable phase shift, and a microelectromechanically machined (MEM) switch Many radiator circuits can be deployed in an electronically scanned antenna array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.