US Patent 11011818 Transformer having series and parallel connected transmission lines

First ends of a plurality of sub-networks of an exemplary transmission-line network are connected together electrically in series. First ends of a plurality of transmission lines of one subnetwork are connected together in parallel and second ends are connected together in series. The one sub-network has a first-end impedance value that is different than a second-end impedance value. The second-end impedance value of the one sub-network is different than a second-end impedance value of another sub-network. A respective transmission line connects each sub-network to a common circuit node and a respective resistor interconnects each adjacent pair of the second ends of the sub-networks.