A Study of Predistorter using schottkey diode for Power Amplifier 


Vol. 27,  No. 10, pp. 993-998, Oct.  2002


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  Abstract

At Power amplifier, distortion of output is appeared because of non-linearlity, so we must study method of
compensation for non-linearity.
In this paper, it was studied about the characteristic of predistorter using serial schottky diode for an amplifier. As a result, we confirmed that power amplifier was able to linearize when we put predistorter using non-linearity of schotty diode before power amplifier.
When input carrier level was low, input carrier was delivered directly into power amplifer but input carrier level was high, input carrier was delivered into power amplifer through predistorter with suppressed level. As a result power amplifier always was at saturation region. Through simulation using serenade 8.0, we have concluded that efficiency was improved about 3%, and predistorter got best linearity at 1.8GHz between 800MHz -2.2GHz.

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  Cite this article

[IEEE Style]

K. Oh, "A Study of Predistorter using schottkey diode for Power Amplifier," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 10, pp. 993-998, 2002. DOI: .

[ACM Style]

Kyu-Tae Oh. 2002. A Study of Predistorter using schottkey diode for Power Amplifier. The Journal of Korean Institute of Communications and Information Sciences, 27, 10, (2002), 993-998. DOI: .

[KICS Style]

Kyu-Tae Oh, "A Study of Predistorter using schottkey diode for Power Amplifier," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 10, pp. 993-998, 10. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880