Accession Number : ADD000462
Title : On-Line Receiver Noise Figure Measuring System.
Descriptive Note : Patent Application
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Campbell,Kenneth J
Report Date : 01 Apr 1974
Pagination or Media Count : 5
Abstract : The patent application relates to an antenna selectively connected directly, and through an attenuator to a receiver whose noise figure is to be determined. A noise source is also injected into the receiver by means of a directional coupler. The switch and noise source are controlled by a sequence controller to provide attenuated signals, non-attenuated signals, and non-attenuated signals with injected noise signals to the reciever. A meter is provided to measure the output level of the receiver in response to the various signal inputs.
Descriptors : *Noise(Radio), Patents, Radio receivers, Test methods, Measurement, On line systems
Subject Categories : Radio Communications
Distribution Statement : APPROVED FOR PUBLIC RELEASE