Patents by Inventor Klaus G. Schroeder

Klaus G. Schroeder 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).

  • Ultra-broadband impedance matched electrically small complementary signal radiating structures using thin wire elements and an impedance optimizing feed circuit
    Patent number: 4958167
    Abstract: Ultra-broadband impedance matched electrically small complementary-pair antennas using thin wire elements with impedance optimizing feed are presented. Efficiencies are determined by achieveable loss resistances in the radiating structure itself, rather than the (limited) quality of an external loading coil; and by energy channeled into the difference port of the feed hybrid, that is used to match two complementary impedances. Broad and impedance loci are achieved for the thin radiators by horizontal feed bars placed prior to the complementarizing circuit. Impedance matching is then accomplished in a standard broadband hybrid or "Magic Tee" feed circuit, which combines either two identical elements, where one has been "complementarized", or there are twoself-complementary elements, such as a monopole and a half-loop.
    Type: Grant
    Filed: June 7, 1988
    Date of Patent: September 18, 1990
    Inventor: Klaus G. Schroeder
  • Ultra-broadband impedance matched electrically small self-complementary signal radiating structures with impedance-inverting feed for complementary pairs using thin wire elements
    Patent number: 4750000
    Abstract: Ultra-broadband impedance matched electrically small self-complementary pair antennas using thin wire elements with impedance inverting feed are presented. Efficiencies are determined by achieveable loss resistances in the radiating structure itself, rather than the (limited) quality of an external loading coil, and by energy channeled into the difference port of the feed hybrid, that is used to match two complementary impedances. Broadband impedance loci are achieved for thin radiators by impedance inverters placed prior to the complementarizing circuit. Impedance matching is then accomplished in a standard broadband hybrid or "Magic Tee" feed circuit.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: June 7, 1988
    Inventor: Klaus G. Schroeder