Beamforming: Balancing with CMOS and III-V from Microwave to mm-Wave Frequencies

Beamforming and MIMO architectures add an extra dimension to transceivers for wireless communication and radar: phase shifting, as a narrowband substitute for true time delays and signal combination or splitting need to be added. With the number of antenna paths as an extra degree of freedom, the energy consumption can be optimized, with the transmit power ranging from levels beyond or in reach of silicon technologies. This talk will balance on this trade-off, showing, both for microwave and mm-wave frequencies, architecture and circuit realizations using CMOS and compound semiconductors as well as packaging approaches.