Title :
Efficiency of feedforward amplifiers
Author_Institution :
Dept. of Electr. & Electron. Eng., Bristol Univ., UK
fDate :
10/1/1992 12:00:00 AM
Abstract :
Feedforward amplifiers have found wide application in satellite and, more recently, mobile radiocommunications. In both of these fields it is important to be able to optimise the efficiency of the overall amplifier system and, in particular, select the optimum coupling factor for the output coupler in order to achieve this. The coupling-factor problem is examined mathematically and some results are presented demonstrating the efficiencies which can be achieved for various system configurations
Keywords :
microwave amplifiers; radiofrequency amplifiers; ultra-high-frequency amplifiers; RF type; SHF; UHF; efficiency; feedforward amplifiers; mobile radiocommunications; optimum coupling factor; output coupler; satellite communications;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings G
