Arrangements and methods for generating a radio frequency signal
US6094458A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 1997 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Sep 5, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/331
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to arrangements and methods for radio frequency modulation and power amplification of an information signal (X.sub.IF). Modulation and amplification of the information signal (X.sub.IF) is carried out with very high linearity and efficiency over a wide frequency band by sigma-delta modulating (410) said information signal (X.sub.IF), whereby a digital signal (Y) is generated. The digital signal (Y) is up-mixed and voltage switched (420) by voltage-fed switches (423) controlled by the up-mixed digital signal (RF). Said switches are preferably conductive elements whose electric conductivity depend on the amount of ionising radiation that falls on the elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.