Beamforming networks for antennas have evolved since the 1960’s. Early designs were typically fixed-beam architectures, although newer configurations include complex adaptive beamforming networks. This brief presentation reviews the origins of the technology, and offers several example circuit topologies of passive microwave beamformers.
Passive RF and Microwave Beamformer Networks
![Passive RF and Microwave Beamformer Networks](http://www.microwavejournal.com/ext/resources/whitepapers/2018/Jun-18/thumb/TRM150.jpg?1612492898)