Telecommunications – Transmitter – Amplitude modulation
Reexamination Certificate
2005-06-21
2005-06-21
Beamer, Temica M. (Department: 2681)
Telecommunications
Transmitter
Amplitude modulation
C455S091000, C455S112000, C455S114300
Reexamination Certificate
active
06909884
ABSTRACT:
A baseband signal phase-compensation technique offsets undesirable phase shifts, or changes in phase shift, introduced in a transmit signal when changing transmit amplifier operating modes. Such mode changes may, for example, entail switching amplifier stages in and out of an amplification signal path. A phase compensator selectively operates on the baseband signal or signals to subtract out an amount of phase shift equal to the amount of phase shift added by switching one or more additional amplifier stages into the amplification signal path. Compensating baseband signals is this manner may be particularly valuable for the reverse link signal of a mobile terminal operating in a wireless communication environment such as CDMA2000. In such environments, abrupt phase shift changes in the transmit signal associated with transmit signal power control are undesirable.
REFERENCES:
patent: 4701717 (1987-10-01), Radermacher et al.
patent: 5150072 (1992-09-01), Malec
patent: 5748678 (1998-05-01), Valentine et al.
patent: 5898906 (1999-04-01), Williams
patent: 5901346 (1999-05-01), Stengel et al.
patent: 6147553 (2000-11-01), Kolanek
patent: 6266517 (2001-07-01), Fitzpatrick et al.
patent: 6567653 (2003-05-01), Sanders
patent: 6614854 (2003-09-01), Chow et al.
patent: 6650875 (2003-11-01), Rozenblit et al.
patent: 0964511 (1999-12-01), None
patent: 0982849 (2000-03-01), None
patent: 1032120 (2000-08-01), None
Refai Wail
Sourour Essam
Beamer Temica M.
Coats & Bennett P.L.L.C.
Telefonaktiebolaget LM Ericsson (publ)
LandOfFree
Amplifier phase change compensation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Amplifier phase change compensation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplifier phase change compensation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3506473