Linearization of traveling-wave tube amplifiers using digitally supported signal injection technique

Girish Chandra Tripathi, Meenakshi Rawat, Sudhir Kamath and M. V. Kartikeyan

Journal of Electromagnetic Waves and Applications, 2017, vol. 31, issue 17, 1802-1815

Abstract: This paper presents a digitally supported signal injection technique for the intermodulation distortion terms (IMDs) resulting from the non-linearity of Traveling-wave tube amplifiers. It is shown that the state-of-the art analog techniques have inherent limitation due to the inaccuracy of analog components. The proposed technique provides more accurate cancellation of third-order IMD as compared to its analog counterpart. Moreover, it is shown that the presented technique can be easily extended to compensate for higher order IMDs simultaneously.

Date: 2017
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DOI: 10.1080/09205071.2017.1374884

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