Illustration of the tightly coupled dipole array (TCDA) integrated with a balun to create the TCDA-IB array. Enhanced coupling between dipole is achieved using overlapping dipoles at the array’s surface. The Marchand-type balun is depicted to the left and a single feed is used to feed a pair of dipoles (creating the unit cell) to double the impedance from the Wilkinson divider for improved matching at the dipole terminals.
