INVESTIGATION OF THE STABILIZATION OF PARAMETRIC AMPLIFIERS.
Abstract
An investigation is described of new techniques for the stabilization of the gain of parametric amplifiers used in the front end of radiometer receivers. A summary of the basic theory of parametric amplifiers is given with emphasis on the degenerate mode of operation as applied to receiver front ends for microwave radiometry. The development of a 15.5 gc amplifier is described. This amplifier utilizes gain stability by feedback of a reference noise level to control the pump power. The amplifier has 17 db gain, 70 Mc bandwidth, and 3.0 db noise figure. The utilization of feedback results in a 15 to 1 improvement of gain stability for pump power changes. A 1.0 gc degenerate mode amplifier for use as the first stage of a radiometer i-f amplifier is developed. A feasibility study of a degenerate mode Ka-band parametric amplifier is described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 05, 1963
- Accession Number
- AD0429159
Entities
People
- D. E. Allen
- R. B. Butterton
Organizations
- Motorola Mobility