Abstract
This paper presents a dual-nonlinear branch linearizer for reducing the corrected amplitude overshoot of conventional single nonlinear branch linearizer. Theoretical analysis is carried out, the analysis is verified by simulation, and a prototype of Ka band 25.28∼26.08 GHz dual nonlinear branch linearizer is achieved. It indicates that the corrected amplitude overshoot is less than 0.5 dB, the C/I3 improvement is more than 10 dB related to a single carrier IBO 9 dB, when it is linked and tested for 50 W spacebrone Travelling Wave Tube Amplifier (TWTA).
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Hu, B., Wang, G., Hao, B. et al. Analog predistortion linearizer on reducing corrected amplitude overshoot. J. Electron.(China) 31, 597–602 (2014). https://doi.org/10.1007/s11767-014-4139-x
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DOI: https://doi.org/10.1007/s11767-014-4139-x