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Ronald D McCallister, Eric M Brombaugh: Method and apparatus for adaptively controlling signals. Locke Lord Bissell & Liddell, July 30, 2009: US20090191907-A1

A signal processing system according to various aspects of the present invention includes an excursion signal generator, a scaling system and a filter system. The excursion signal generator identifies a peak portion of a signal that exceeds a threshold and generates a corresponding excursion signal. ...


32
Ronald Duane McCallister, Eric M Brombaugh: RF Transmitter with Heat Compensation and Method Therefor. Crestcom, Meschkow & Gresham, May 14, 2009: US20090124218-A1

An RF transmitter (10) includes an RF amplifier (22) that experiences gain-droop distortion as a result of self-heating. A heat compensator (20) is included to insert a gain boost of an amount which is the inverse of the gain droop experienced by the RF amplifier (22). The amount of gain boost is de ...


33
Ronald Duane McCallister, Eric M Brombaugh: Transmitter Linearized Using Inversing and Non-Inversing Transform Processing Sections and Method Therefor. Crestcom, February 9, 2012: US20120034886-A1

A transmitter (50) includes a nonlinear predistorter (58) having two instances of an inverting transform (106, 106′) that may be implemented in a look-up table (122) and that implements a transform which is the inverse of an average terms component (96) of a nonlinear transform model (94) for an amp ...


34
Ronald Duane McCallister, Eric M Brombaugh: Transmitter Linearized Using Cartesian-Processed Look-Up Table and Method Therefor. Crestcom, February 9, 2012: US20120034887-A1

A transmitter (50) includes a nonlinear predistorter (58) having two instances of an inverting transform (106, 106′) that may be implemented in a look-up table (122) and that implements a transform which is the inverse of an average terms component (96) of a nonlinear transform model (94) for an amp ...


35
Ronald Duane McCallister, Eric M Brombaugh: Transmitter Linearized Using Bias Deviation Gain Adjustment And Method Therefor. CrestCom, May 3, 2012: US20120108189-A1

A transmitter (50) includes a low power memoryless nonlinear predistorter (58) that inserts predistortion configured to address a nonlinearity (146) corresponding to gain droop and another nonlinearity (148) corresponding to deviations from an average bias condition. When efforts are taken to reduce ...


36
Ronald Duane McCallister, Eric M Brombaugh: Transmitter Linearized In Response To Signal Magnitude Derivative Parameter and Method Therefor. CrestCom, May 3, 2012: US20120106676-A1

A transmitter (50) includes a low power nonlinear predistorter (58) that inserts predistortion configured to compensate for a memoryless nonlinearity (146) corresponding to gain droop and another memoryless nonlinearity (148) corresponding to a video signal. When efforts are taken to reduce memory e ...