Published in IEEE spectrum

Published in IEEE spectrum

Published in IEEE Transactions on antennas and propagation

Published in IEEE spectrum

Published in IEEE Transactions on antennas and propagation

Published in IEEE Transactions on antennas and propagation

Published in IEEE Transactions on antennas and propagation

Published in IEEE Transactions on antennas and propagation

Published in IEEE Transactions on antennas and propagation

Published in IEEE Transactions on antennas and propagation