Title :
On power distribution in additive amplifiers
Author :
Niclas, Karl B. ; Pereira, Ramon R. ; Chang, Augustin P.
Author_Institution :
Watkins-Johnson Co., Palo Alto, CA, USA
fDate :
11/1/1990 12:00:00 AM
Abstract :
An analysis of the linear power distribution in amplifiers employing the additive amplification principle has been made. It reveals the wide spread of the active devices´ contributions to the output power at any one frequency and exposes the band-sharing nature of the additive amplification process in multioctave amplifiers. Reversals in the direction of the energy flow over parts of the frequency band converting active into passive devices were observed. The flat gain response of these amplifiers is found to be the result of a sophisticated process in balancing the active devices´ output powers. The computed and measured performance parameters of a 6-18-GHz 2×2 matrix amplifier with emphasis on its experimental multilinear behavior are briefly discussed
Keywords :
equivalent circuits; microwave amplifiers; wideband amplifiers; 2 to 18 GHz; SHF; active devices; additive amplifiers; band-sharing nature; flat gain response; linear power distribution; matrix amplifier; multilinear behavior; multioctave amplifiers; passive devices; Distributed amplifiers; Frequency conversion; Matrix converters; Microwave amplifiers; Microwave devices; Power amplifiers; Power distribution; Power generation; Transmission line matrix methods; Voltage;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
