Directional couplers for RF power detection
US7576626B2 · kind B2 · utility
10Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 11, 2008 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Sep 11, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/46
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Very small size true directional couplers have a coupling coefficient that is independent on load VSWR. The coupler uses coupled inductors with a compensation circuit including a resistor and a capacitor, or just a capacitor. Wideband operation is suitable for many portable applications such as power detection and control for GSM, DCS-PCS, CDMA/WCDMA, Bluetooth, and WLAN systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.