Title :
Even-order distortion enveloping method to linearize saturated high power amplifiers
Author :
Horikawa, K. ; Ogawa, H.
Author_Institution :
NTT Wireless Syst. Labs., Kanagawa, Japan
Abstract :
A new linearizer concept is proposed. The proposed linearizer generates even-order distortion in a frequency band different from the transmission band. This linearizer can control the distortion independently of the incident signals and compensate an almost saturated HPA. The output backoff is improved by about 1 dB which means a power efficiency improvement of about 5%.
Keywords :
linearisation techniques; power amplifiers; satellite communication; distortion control; even-order distortion enveloping method; frequency band; incident signals; linearizer concept; onboard high power amplifiers; output backoff; power efficiency; satellite communication systems; saturated high power amplifiers; transmission band; Amplitude modulation; Communication system control; Frequency; High power amplifiers; Laboratories; Nonlinear distortion; Phase distortion; Power generation; Satellite communication; Signal generators;
Conference_Titel :
Wireless Applications Digest, 1997., IEEE MTT-S Symposium on Technologies for
Conference_Location :
Vancouver, BC, Canada
Print_ISBN :
0-7803-3318-7
DOI :
10.1109/MTTTWA.1997.595116
