Micro electro-mechanical system (MEMS) phase shifter
US6958665B2 · kind B2 · utility
7Cited by
15References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2003 |
| Grant date | Oct 25, 2005 |
| Priority date | — |
| Expiry date | Aug 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/127
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A micro electro-mechanical system (MEMS) phase shifter for shifting the phase of a radio frequency (RF) signal. The phase shifter includes a quadrature coupler having an input port, an output port, a first load port and a second load port. A first variable reactance is coupled to the first load port and a second variable reactance is coupled the second load port. Each variable reactance has a plurality of reflecting phase shifting elements each having an associated micro electro-mechanical system (MEMS) switching element to individually and selectively couple the reflecting phase shifting element to the appropriate load port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.