Development of a 1,000-MC Intermediate-Frequency Amplifier
Abstract
A major problem in the design of microwave superheterodyne receivers is that of obtaining good image rejection, a condition which may be accomplished by an increase either in the i-f or in the selectivity of the preselector. Since the latter is limited by mechanical difficulties and by the video bandwidth requirements of the receiver--a serious limitation in a receiver designed for the interception of extremely narrow pulses--the only alternative is to increase the i-f. In fact, in cases where the video bandwidth must be extremely wide, an unusually high i-f is imperative in order to prevent modulation pulse components from feeding directly through the high-gain i-f amplifier.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 19, 1949
- Accession Number
- AD1211340
Entities
People
- Walter F. Weedman
Organizations
- United States Naval Research Laboratory