Patents Assigned to United Technologies Incorporated
  • Patent number: 4893093
    Abstract: An improved, switched, power splitter is described in which a high frequency input signal is applied via an input to a plurality of amplifiers. First transmission lines are connected between the input and each of the amplifiers, the impedance of each of the first transmission lines being alterable to either a high or low level. A balanced resistance network is preferably coupled between the first transmission lines. Second transmission lines are connected in shunt across the first transmission lines, the impedance of each second transmission line being alterable to an impedance which is a predetermined percentage of the circuits input impedance. A control circuit switches the various transmission lines so that the impedance at the input remains balanced, no matter how many of the first transmission lines are in the high impedance state.
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: January 9, 1990
    Assignee: United Technologies Incorporated
    Inventors: Edward A. Cronauer, Eileen T. Sarc