Circuit for converting a differential signal into a non-differential signal, and RF transmitter comprising such a circuit
US7525390B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2005 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Dec 13, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/06
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for converting a differential signal into a nondifferential signal comprising first and second inputs respectively receiving first and second components of a differential signal. The circuit comprises a single bipolar transistor having an emitter, a base and a collector. The transistor is biased so as to allow flowing of an emitter d.-c. bias current sufficient to allow a linear conversion of a differential RF signal, for example. Both components of the differential RF signal are respectively injected into the emitter and the base of the bipolar transistor so that a remarkably linear conversion is carried out by means of a very simple circuit. The circuit is particularly adapted to the realization of an integrated RF transmission chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.