Title:
SYSTEM AND METHOD FOR CURRENT-MODE AMPLITUDE MODULATION
Document Type and Number:
WIPO Patent Application WO2002082633
Kind Code:
A3
Abstract:
An amplifier circuit includes a power amplifier biased for saturated mode operation, and a contrallable current source to provide current to the power amplifer. The controllable current source effects desired amplitude modulation of the output signal from the power amplifier by modulating the supply current it provides responsive to an amplitude information signal.
Inventors:
HADJICHRISTOS ARISTOTELE (US)
PEHLKE DAVID (US)
PEHLKE DAVID (US)
Application Number:
PCT/US2002/007788
Publication Date:
February 12, 2004
Filing Date:
March 11, 2002
Export Citation:
Assignee:
ERICSSON INC (US)
HADJICHRISTOS ARISTOTELE (US)
PEHLKE DAVID (US)
HADJICHRISTOS ARISTOTELE (US)
PEHLKE DAVID (US)
International Classes:
H03F3/24; H04B1/04; (IPC1-7): H03C1/36
Foreign References:
| US3895316A | 1975-07-15 | |||
| US4510460A | 1985-04-09 | |||
| EP0558793A1 | 1993-09-08 | |||
| FR2766637A1 | 1999-01-29 |
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