Pulse or digital communications – Transmitters – Antinoise or distortion
Reexamination Certificate
2006-07-07
2010-11-30
Corrielus, Jean B (Department: 2611)
Pulse or digital communications
Transmitters
Antinoise or distortion
C375S285000
Reexamination Certificate
active
07844014
ABSTRACT:
Pre-distortion apparatuses and methods for a non-linear component are provided. The apparatus comprises an adaptive block for generating a plurality of correlation coefficients, which are used to weight a plurality of synthesis work functions to pre-distort a given signal. The adaptive block can be driven by an error signal generated from a feedback signal from the non-linear component output signal and a delayed version of the input signal. The apparatus is capable of being operated directly at radio frequency. Also provided are apparatuses and methods for generation of quadrature signals, transconductance amplification employing negative resistance, variable-gain amplification, and envelope detection.
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Choma John
Govindarajan Madabusi
Keerthi Arvind
Kumar P. Vijay
Shanbhag Abhijit
Corrielus Jean B
Haynes and Boone LLP
Scintera Networks Inc.
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