LOW-NOISE SMALL-SIGNAL AMPLIFIER
Abstract
Research was continued on the development of a low noise, small signal, varactor diode parametric amplifier operating over a range of 2 to 4 gc. Two single-diode varactor mounts, each having a 40-percent instantaneous bandwidth, were cascaded to yield an overall gain of 10 db from 2 to 3 gc (3-db points). The noise factor of these combined amplifiers varied linearly from 1.8 db at 2 gc, to 3 db at 2.8 gc. The noise factor above 2.9 gc peaked very sharply to about 5.5 db. The reason for this peak is not yet apparent. The configuration of the final engineering model was fixed-four stages will be used and the package will accommodate either the balanced or unbalanced varactor mount.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1963
- Accession Number
- AD0403781
Entities
People
- D. Neuf
- P. Lombardo