Patents by Inventor Martin F. Jue

Martin F. Jue 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).

  • Publication number: 20180205141
    Abstract: An automatically tunable mobile antenna is provided with toroidal inductors connected in series between the antenna feed point and a whip and a shunt inductor to ground at the RF input, with the inductors forming an L network impedance matching circuit having values which are in a binary sequence and which are selectively added to impedance match the whip to the output impedance of a transmitter.
    Type: Application
    Filed: January 17, 2017
    Publication date: July 19, 2018
    Inventor: Martin F. Jue
  • Publication number: 20180031621
    Abstract: A system for remotely measuring antenna input impedance utilizing an automatic antenna tuner in which for any tuner, the tuner input impedance may be established by the values of the components in the circuit at the time that the SWR is at a minimum, with these values being automatically available in terms of the components that are switched in to achieve low SWR. Once having established the input impedance to the tuner, the complex conjugate of the tuner input impedance yields the antenna input impedance, with antenna input impedance sensed at full power at a position remote from the antenna input.
    Type: Application
    Filed: July 26, 2016
    Publication date: February 1, 2018
    Inventor: Martin F. Jue
  • Patent number: 7453328
    Abstract: A wide bandwidth high-power T network tuner obtains its wide bandwidth operation by connecting a fixed capacitor between the input and ground, with the tuner using large, series connected variable capacitors for high power so as to solve the minimum capacitance problem on the higher frequencies, with the input and output matching capacitors being independent one from the other.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: November 18, 2008
    Inventor: Martin F. Jue
  • Patent number: 7224241
    Abstract: In a T network tuner, a variable shunt capacitor is provided between the signal input and ground that is ganged to the variable input matching capacitor. The operation is mechanically arranged such that, as one decreases the capacitance of the variable input matching capacitor, one increases the capacitance of the shunt capacitor to assist in high frequency matching, both to increase the maximum matchable load resistance and to decrease the minimum matchable load resistance. The variable shunt capacitor therefore assists at the high frequency ranges to bring the antenna impedances down to the transmitter output impedance, thus to establish an extended matching range tuner capable working between 160 and 10 meters.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: May 29, 2007
    Inventor: Martin F. Jue
  • Patent number: D342690
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: December 28, 1993
    Assignee: MFJ Enterprises, Inc.
    Inventors: Martin F. Jue, Steven S. Pan, Charles T. Rauch
  • Patent number: D363443
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: October 24, 1995
    Assignee: MFJ Enterprises, Inc.
    Inventors: Martin F. Jue, Steven S. Pan, Charles T. Rauch
  • Patent number: D363724
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: October 31, 1995
    Assignee: MFJ Enterprises, Inc.
    Inventors: Martin F. Jue, Stephen D. Jue
  • Patent number: D368270
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: March 26, 1996
    Assignee: MFJ Enterprises, Inc.
    Inventor: Martin F. Jue
  • Patent number: D374010
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: September 24, 1996
    Assignee: MFJ Enterprises, Inc.
    Inventors: Martin F. Jue, Steven S. Pan