Title :
Higher-order predistortion linearisation using cascaded lower-order nonlinearities
Author :
Qiu, J.X. ; Abe, D.K. ; Antonsen, T.M. ; Danly, B.G. ; Levush, B. ; Myers, R.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
A technique for realising nonlinear functions of order ≥5 using cascaded third-order nonlinear functions is described. The technique can be used to efficiently generate higher-order nonlinearities for predistortion linearisation applications. The use of two cascaded third-order functions is experimentally demonstrated to be comparable to a fifth-order implementation in performance.
Keywords :
linearisation techniques; nonlinear distortion; nonlinear functions; power amplifiers; travelling wave amplifiers; TWTA; cascaded lower-order nonlinearity; cascaded third-order nonlinear function; fifth-order implementation; higher-order nonlinearity; higher-order predistortion linearisation; nonlinear function realisation; power amplifiers; travelling wave amplifiers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20045583
