Bi-directional vector modulator/active phase shifter
US11063355B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2020 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | Mar 4, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A novel bi-directional vector modulator to be used as an active phase shifter is proposed. The advantages of the active phase shifter include: 1) Compact size—By active current combining technique, short transmission lines are used to perform signal combining rather than using area-consuming Wilkinson combiner or splitter; 2) High phase resolution and flexibility—phase interpolation can be performed by vector addition through m-path vector modulators; 3) High efficiency—no signal switch loss, only switched matching capacitor; 4) Simplified signal interconnection; 5) No passive combiner needed—eliminate large size and losses in the passive combiner); 6) Can have unequal combining and/or splitting by changing the gain of vector modulator, which is difficult to realize with passive combining and/or splitting network; and 7) Can combine different signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.