Patents by Inventor Erik Langer

Erik Langer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4918401
    Abstract: The requirements of extreme miniaturization, remote operation, wide bandwidth, good reproducibility in high quantities, low cost and low insertion loss are met with an incrementally adjustable distributed network arrangement in the general configuration of a distributed amplifier. The arrangement comprises delay elements (Z.sub.Dm, Z.sub.Gm) and a plurality of controlled sources (T.sub.n-2, T.sub.n-1, T.sub.ni VCCS), a signal input (E) and a signal output (A). The controlled sources (T.sub.n-2, T.sub.n-1, T.sub.ni VCCS) may be selectively turned on and off. Dual gate FETs (T.sub.1, . . . T.sub.n) are employed as controlled sources, whose first gate (G.sub.1) is connected to the input signal voltage through delay elements (Z.sub.Gm) and whose second gate (G.sub.2) is maintained at suitable dc voltages for turning the respective FETs on and off.
    Type: Grant
    Filed: July 24, 1986
    Date of Patent: April 17, 1990
    Assignee: Siemens Aktiengesellschaft
    Inventor: Erik Langer