Before revision: Bartlett's theorem is then used to transform the design to an intermediate stage as a step towards the final implementation (using a transformer to produce an unbalanced version of the lattice topology).Vizmuller, P, RF Design Guide: Systems, Circuits, and Equations, pp 82-84 , Artech House, 1995 ISBN 0890067546.
After revision: Bartlett's theorem is then used to transform the design to an intermediate stage as a step towards the final implementation (using a transformer to produce an unbalanced version of the lattice topology).Vizmuller, P, RF Design Guide: Systems, Circuits, and Equations, pp 82–84 , Artech House, 1995 ISBN 0890067546.