H - Electricity – 03 – F
Patent
H - Electricity
03
F
H03F 1/32 (2006.01)
Patent
CA 2378011
Apparatus and method are provided for linearizing a first amplifier having a non-linear signal response characteristic to an applied input signal. The amplifier is located between a signal source and a load. This is accomplished by selecting a second amplifier that exhibits a non-linear signal response characteristic to an applied input signal similar to that of the first amplifier. A portion of the input signal obtained from the signal source is then applied to the second amplifier to generate an output signal. A determination is made as to whether there is any difference between the input signal and the output signal and a difference signal is provided. The difference signal is phase inverted to obtain an inverted difference signal. This inverted difference signal is combined with the input signal to provide a corrected input signal. The corrected input signal is applied to the first amplifier to obtain a corrected output signal therefrom.
L'invention concerne un dispositif et un procédé de linéarisation d'un premier amplificateur possédant des caractéristiques non linéaires de réponse signal à un signal d'entrée. L'amplificateur est placé entre une source de signaux et une charge. A cet effet, on sélectionne un second amplificateur présentant des caractéristiques non linéaires de réponse signal à un signal d'entrée, similaires à celles du premier amplificateur. On envoie ensuite une partie du signal d'entrée en provenance de la source de signaux au second amplificateur en vue de générer un signal de sortie. On détermine la présence de différences entre le signal d'entrée et le signal de sortie, ce qui permet de fournir un signal de différence. Ce signal de différence subit une inversion de phase, puis le signal de différence à phase inversée est combiné au signal d'entrée, ce qui fournit un signal d'entrée corrigé. Ce signal corrigé est envoyé au premier amplificateur qui délivre alors un signal de sortie corrigé.
Harris Corporation
Oldham Edward H.
LandOfFree
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