Title :
The efficiency of a feedforward amplifier with delay loss
Author :
Parsons, K.J. ; Kenington, P.B.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
fDate :
5/1/1994 12:00:00 AM
Abstract :
In most applications using the feedforward linearization technique, the overall amplifier efficiency is of significant concern. This paper theoretically analyzes the effect that the insertion loss of the time delay elements has on the overall efficiency of a feedforward amplifier. Practical linearity and efficiency results are given for a feedforward system, using VMOS transistor class C main and error amplifiers, to illustrate the effectiveness of the analysis
Keywords :
delays; linearisation techniques; losses; power amplifiers; radiofrequency amplifiers; VMOS transistor; amplifier efficiency; class C amplifiers; delay loss; feedforward amplifier; feedforward linearization technique; feedforward system; insertion loss; time delay elements; Broadband amplifiers; Delay effects; Feedforward systems; Insertion loss; Linearity; Power amplifiers; Predistortion; Radio frequency; Radiofrequency amplifiers; Satellites;
Journal_Title :
Vehicular Technology, IEEE Transactions on
