Modeling and system development for the FLAG L-band phased array feed for large-dish astronomical observations

Wide-field phased array feeds (PAFs) are part of the next generation of receivers for astronomical observatories. Groups around the world are developing array feeds for medium to large size dish antennas. The Brigham Young University (BYU) radio astronomy group is focusing its efforts on modeling and developing new high performance PAF systems for the Green Bank Telescope (GBT) with 100-meter reflector, which is the largest fully steerable radio telescope in the world.