Abstract: A method and multiple carrier linear amplifier circuit reduces intermodulation distortion by sampling the multiple carrier linear amplifier radio frequency signal and detecting the sampled signal at frequency increments and quantizing and nulling the intermodulation distortion. The signal can have predetermined frequency increments fo . . . fi situated in at least one of predetermined sub-bands. The sampled radio frequency signal can be mixed with the local oscillator signal to target the centers of the multiple carriers and generate an intermediate frequency signal.

Abstract: Outputs of a linear RF detector and a logarithmic RF detector are multiplexed individually to a single digitizer or simultaneously to a respective digitizers. A process generates a composite waveform from the resulting digitized data, either at a later time in the former case or in real-time in the latter case. To achieve simultaneous routing, several routing relays are arranged in a specialized configuration between the outputs of the RF detectors and the inputs of the digitizers.

Abstract: Outputs of a linear RF detector and a logarithmic RF detector are multiplexed individually to a single digitizer or simultaneously to a respective digitizers. A process generates a composite waveform from the resulting digitized data, either at a later time in the former case or in real-time in the latter case. To achieve simultaneous routing, several routing relays are arranged in a specialized configuration between the outputs of the RF detectors and the inputs of the digitizers.

Abstract: A signal amplification system independently adjusts the relative phase and/or amplitude between the signal components and/or the relative phase and/or amplitude between the distortion components to improve the combination of corresponding components. For example, a signal amplification system has first and second amplifier paths carrying replicas of signal components. On the first amplifier path, a first amplifier amplifies signal components and generates distortion components. A replica of the amplified signal components and distortion is provided to a coupling path. On the coupling path, the distortion components are isolated by canceling the signal components, and the distortion components are then amplitude and/or phase adjusted without a corresponding adjustment to the phase and/or amplitude of the signal components. The adjusted distortion components are coupled onto the second path where the signal components and the adjusted distortion components are amplified by a second amplifier.

Abstract: A method and multiple carrier linear amplifier circuit reduces intermodulation distortion by sampling the multiple carrier linear amplifier radio frequency signal and detecting the sampled signal at frequency increments and quantizing and nulling the intermodulation distortion. The signal can have predetermined frequency increments fo . . . fi situated in at least one of predetermined sub-bands. The sampled radio frequency signal can be mixed with the local oscillator signal to target the centers of the multiple carriers and generate an intermediate frequency signal.

Abstract: A low distortion amplifier with an optimization circuit that performs an automated alignment of the amplifier is provided. The optimization circuit includes an extraction circuit designed to extract various signals indicative of the operation of the amplifier under the current operating conditions. A control circuit using information received from the extraction circuit determines the appropriate control settings for key components of the amplifier for the current operating conditions. The optimization circuit ensures that the amplifier output has a desired signal level while also ensuring that the output has minimum or no intermodulation distortion under all operating conditions.