Creating Phase-Coherent Signals with Multi-Channel AWGs
应用文章
Coherent multi-channel systems have unique properties that enable beam forming, direction finding and improved reception in a dispersive channel. As enabling technologies mature and demands for these capabilities increase, the ability to efficiently test and exercise these systems is of growing importance.
This is relevant for multi-channel applications such as:
– MIMO systems
– Beam forming
– Phased-array radar
– Carrier aggregation and 5G research
This application note focuses on a solution for generating multi-channel wideband phase-coherent signals using the M8190A wideband arbitrary waveform generator (AWG). General and specific measurement challenges which engineers have been facing are illustrated. The solution shown in this paper is based on an actual setup designed for a MIMO system. The results of this system provide excellent benefits, not only from a technical but also from an operational perspective.