Millimeter-wave Network Analyzer-Based Scatterometer

摘要

The Millimeter Polarimeter (MMP) is a network analyzer based scatterometer and reflectometer system that has been developed in support of a program to characterize radar clutter at 35, 94 and 140 GHz. An HP 8510A network analyzer is employed in the MMP system as a signal conditoner and processor to facilitate real time data reduction, to reduce the short time delay leakage noise inherent in tradional FM/CW radar, and to further enhance the signal to noise ratio of the system through signal processing techniques. Operation of the syshtem at millimeter weavelength is achieved with upconversion and harmonic downcoversion. The use of harmonic downconverters permits low frequency signal connection between components of the system and allow easy reconfiguration in either scatterometer, bistatic or reflection/transmission modes.