Voltage-controlled phase shifter
US5939917A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Nov 26, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/20
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a voltage-controlled phase shifter including two differential stages, each including a biasing branch and output branches coupled with the output branches of the other stage; two first resistors coupling the output branches to a first supply potential; a first capacitor connected between the output branches; two second resistors connected in series between the biasing branches; a second capacitor connected in series between the two second resistors; means for applying an input signal in the form of a differential current across the second capacitor; and means for supplying, as an output signal, the sum of the current in one of the first resistors and of a predetermined fraction of a corresponding component of the differential current constituting the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.