AM-PM conversion introduced by weakly nonlinear circuits

H. Jardon-Aguilar UAM-AZC, Department of Electrical Engineering, Research and Advanced Studies Centre of IPN, Ave. IPN, No. 2508, sq. Ave. Ticoman, Col. Zacatenco, C.P. 07000, Mexico City, Mexico

J. Aguilar-Torrentera UAM-AZC, Department of Electrical Engineering, Research and Advanced Studies Centre of IPN, Ave. IPN, No. 2508, sq. Ave. Ticoman, Col. Zacatenco, C.P. 07000, Mexico City, Mexico

F. Iturbide-Sanchez UAM-AZC, Department of Electrical Engineering, Research and Advanced Studies Centre of IPN, Ave. IPN, No. 2508, sq. Ave. Ticoman, Col. Zacatenco, C.P. 07000, Mexico City, Mexico

Abstract

This paper is related to a novel model for the AM–PM conversion characterization of systems. By means of nonlinear transfer function analysis, AM–PM conversion is obtained as a phase statement of compression and desensitization, thus immunity against electromagnetic interference of radio systems can be evaluated when the signal undergoes fading or when it is received with interfering oscillations. The model is used to obtain the AM–PM conversion introduced by a feedforward amplifier. The results show that the maximum compensation of third-order intermodulation does not necessary coincide with the minimum AM–PM conversion condition.

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AM-PM conversion introduced by weakly nonlinear circuits

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AM-PM conversion introduced by weakly nonlinear circuits

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