Telecommunications – Transmitter – Noise or interference elimination
Reexamination Certificate
2005-09-20
2005-09-20
Vo, Nguyen T. (Department: 2685)
Telecommunications
Transmitter
Noise or interference elimination
C375S297000
Reexamination Certificate
active
06947711
ABSTRACT:
The invention relates to linearization of a radio frequency (RF) power amplifier (5) by predistortion. Digital predistortion is performed (1) on received digitized base-band input signals to compensate for amplifier distortion. The resulting signal is converted to an analog signal via two D/A converters (2), after which analog frequency conversion is performed (3) on the analog signal to achieve a radio frequency (RF) signal. This radio frequency signal is exposed to analog predistortion (4) and thereafter amplified by the power amplifier.
REFERENCES:
patent: 4291277 (1981-09-01), Davis et al.
patent: 4725901 (1988-02-01), Eiberger et al.
patent: 5049832 (1991-09-01), Cavers
patent: 5732333 (1998-03-01), Cox et al.
patent: 5745006 (1998-04-01), Budnik et al.
patent: 5898338 (1999-04-01), Proctor et al.
patent: WO 98/12800 (1998-03-01), None
patent: WO 99/45638 (1999-09-01), None
patent: WO 99/45640 (1999-09-01), None
Briffa; “Linearization of RF Power Amplifiers”; A thesis submitted for the degree of Doctor Philosophy at Victoria University of Technology; Dec. 1996; pp. 6-37.
Cripps; “RF Power Amplifiers for Wireless Communications”; 1999; pp. 225-228.
Telefonaktiebolaget L M Ericsson (publ)
Vo Nguyen T.
LandOfFree
Method and apparatus for generating a radio frequency signal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for generating a radio frequency signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for generating a radio frequency signal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3412780