Title :
New approach on the design of travelling wave amplifier
Author :
Paoloni, Claudio ; Kosslowski, S.
Author_Institution :
Dept. Electr. Eng., Roma Univ., Italy
Abstract :
The approach to the design of traveling wave amplifiers (TWAs) presented makes use of specially selected FETs. This is due to the introduction of Chebyshev or Butterworth filter theory that requires different capacitances for the individual stages. The main advantage of this method is the reduction of the ripple in the gain and especially an improvement of the reflection coefficient of the amplifiers compared to conventional designs. The application of the filter approach has been demonstrated successfully for the assumption of a unilateral FET description as well as for a more accurate transistor model. For the examples presented, the Chebyshev approach has proved to be superior to the conventional TWA design
Keywords :
MMIC; field effect integrated circuits; field effect transistor circuits; filtering and prediction theory; microwave amplifiers; semiconductor device models; wideband amplifiers; Butterworth filter theory; Chebyshev approach; Chebyshev filter theory; MMIC; TWA; capacitances; design approach; distributed amplifiers; gain ripple; reflection coefficient; selected FETs; transistor model; travelling wave amplifier; Capacitance; Chebyshev approximation; Distributed parameter circuits; FETs; Filtering theory; Frequency; Guidelines; Low pass filters; Reflection; Transmission line theory;
Conference_Titel :
Circuits and Systems, 1991., Proceedings of the 34th Midwest Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-0620-1
DOI :
10.1109/MWSCAS.1991.252185
