Title :
A New Method for Designing Wide-Band Parametric Amplifiers
fDate :
1/1/1963 12:00:00 AM
Abstract :
A practical method of designing wide-band parametric amplifiers operated with a circulator is described. For amplifiers with an initially series-tuned varactor, it is possible to find simple relations between Butterworth and Chebyshev responses of lowpass filters and desired gain responses of maximally flat or equalripple type. These relations are shown to hold for most practical varactors. For amplifiers with an initially series-tuned varactor, simple expressions for the limiting gain bandwidth product are given. It is also shown how filters should be chosen to give stable amplifiers.
Keywords :
Band pass filters; Bandwidth; Broadband amplifiers; Chebyshev approximation; Circuits; Design methodology; Matched filters; Reflection; Varactors; Wideband;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1963.1125592