Saleh's Model of AM/AM and AM/PM Conversions is not a Model without Memory : Another Proof

• Autorzy: Borys A.

Identyfikatory

DOI

10.1515/eletel-2017-0010

• Języki publikacji: EN

Abstrakty

EN

The so-called Saleh's representation for description of the AM/AM and AM/PM conversions, occurring in communication power amplifiers, consists of two expressions that describe them as functions of a real-valued baseband signal modulating the carrier amplitude. It is a common view that this description forms a model without memory. We show here that the above belief is not correct; just the opposite is true. To prove this, we take into account an equivalent description of the Saleh's model called the quadrature model of bandpass nonlinearities and express it in a form of a nonlinear operator. Afterwards, we check whether this operator possesses a zero memory. To this end, we use an appropriate theorem of the nonlinear systems theory. Finally, as a result of this investigation, we observe that the memory of the above operator is nonzero.

Słowa kluczowe

EN

Saleh's model of AM/AM; Saleh's model of AM/PM; conversions; power amplifier; memory effect; in-phase representation of nonlinear devices; quadrature representation of nonlinear devices

• Wydawca: Polish Academy of Sciences, Committee of Electronics and Telecommunication
• Czasopismo: International Journal of Electronics and Telecommunications
• Rocznik: 2017
• Tom: Vol. 63, No. 1
• Strony: 73--77
• Opis fizyczny: Bibliogr. 13 poz.

Twórcy

autor

Borys A.

• Department of Marine Telecommunications, Faculty of Electrical Engineering, Gdynia Maritime University, Gdynia, Poland

Bibliografia

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• [11] A. Borys and W. Sieńko, “On modelling AM/AM and AM/PM conversions via Volterra series,” Int. Journal of Telecommunications and Electronics (JET), vol. 62, pp. 267-272, 2016.
• [12] I. W. Sandberg, “Bounded inputs and the representation of linear system maps”, Circuits, Systems, and Signal Processing, vol. 24, pp. 103-115, 2005.
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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).