Transmission Line Transformers, 4th edition (repost)

This book stands alone in its coverage of broadband transmission line transformers. Many configurations of Ruthroff and Guanella types of transformers are described in complete detail, including core selection, conductor types, winding instructions and complete measured performance. Balanced-to-unbalanced (balun) and unbalanced-to unbalanced (unun) types are included for matching low and high impedances to an operating impedance of 50-75 ohms.