Double up-conversion modulator
US6728527B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Jun 20, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03C3/403
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A double up-conversion modulator includes a first conversion stage (1) formed of two modulation units (101, 102), receiving at one input quadriphased baseband signals, controlled by four quadriphased carrier signals at a first intermediate frequency (IF1), and delivering at one output opposite up-converted signals (IF1C, IF1C_b) at said first intermediate frequency. The modulator further includes a second up-conversion stage (2) receiving at one input said up-converted signals at said first intermediate frequency, controlled by two other in phase opposition carrier signals at a second intermediate frequency (IF2), and delivering at one output a high frequency signal (HF_M), said high frequency (HF) corresponding to the sum of said first and second intermediate frequencies (IF1+IF2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.