Wideband class-S modulator and method therefor
US6072361A · kind A · utility
31Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1996 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Nov 27, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03C3/38
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A class-S modulator (5) receives an input signal (10) having envelope information and pulse-width modulates the input signal (10) using a reference waveform (26) from a waveform generator (25). The envelope becomes a pulse-width modulated signal is level-shifted and amplified through a pre-driver (40). A driver (50) controls switches (60, 70) which drive an output (80) into a low-pass filter (90) wherein the envelope is restored to the amplified signal for driving a power amplifier in a wide-band transceiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.