DEVELOPMENT OF KU-BAND DUAL-CHANNEL PARAMETRIC AMPLIFIER.
Abstract
The modification is described of an existing Ksub uband nondegenerate parametric amplifier and construction of a dual-channel system, complete with power supply. The final product displayed 40-mc bandwidth and 20-db gain at 16.5 Gc =50 mc. The two channels had noise figures less than 2.7 db and 3.2 db respectively. An evaluation of several types of varactors led to the selection of a Schottky barrier varactor as the active element. Extending the Schottky barrier technique to parametric amplifier varactors has yielded a new means of obtaining very low noise microwave amplification and high pump efficiency. A breadboard amplifier was operated with a noise figure of 2.2 db (less circulator) and required 10 nw of pump power at 40 Gc. It had a bandwidth of 65 mc at 20-db gain and was electronically tunable over 900 mc. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 15, 1965
- Accession Number
- AD0623417
Entities
People
- J. C. Sadler
- W. E. Wells Jr.
Organizations
- Texas Instruments