MMIC frequency converters and an active filter for integrated RF spectrum analyzer front ends

This paper describes and demonstrates novel monolithic microwave ICs (MMICs) that are suitable for an integrated spectrum analyzer (SA) front end. The proposed MMICs; an up-converter, a down-converter and an active LC filter provide an ultra-wideband performance of 1-32 GHz to the front end as well as remarkable size reduction. These are the results of effective utilization of active signal combination, port isolation, impedance matching and impedance translation.<>