Title :
An Automatic Precision IF-Substitution Vector Ratio Meter for the Microwave Frequency Range
Author :
Weinert, Fritz K.
Abstract :
A new automatic parallel intermediate frequency (IF) vector substitution principle is implemented in a dual-channel microwave vector ratio meter. A greater than 120-dB dynamic range and 0.001-dB and 0.1° resolutions are provided. A combination of analog adaptive filtering and digital data processing provides short measurement times. Theoretical performance limitations are analyzed.
Keywords :
Attenuation measurement; Attenuators; Bandwidth; Circuit noise; Dynamic range; Envelope detectors; Microwave frequencies; Noise level; Noise measurement; Signal to noise ratio;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.1980.4314982
