Inductor And Capacitor Both Variable Patents (Class 334/65)
  • Patent number: 8715839
    Abstract: An electrical component provides a ceramic element located on or in a dielectric substrate between and in contact with a pair of electrical conductors, wherein the ceramic element includes one or more metal oxides having fluctuations in metal-oxide compositional uniformity less than or equal to 1.5 mol % throughout the ceramic element. A method of fabricating an electrical component, provides or forming a ceramic element between and in contact with a pair of electrical conductors on a substrate including depositing a mixture of metalorganic precursors and causing simultaneous decomposition of the metal oxide precursors to form the ceramic element including one or more metal oxides.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: May 6, 2014
    Inventor: L. Pierre de Rochemont
  • Patent number: 7782160
    Abstract: The present invention provides a central frequency adjustment device and adjustable inductor layout; wherein, the central frequency adjustment device is applied in an inductor/capacitor tank (LC tank) for adjusting the central frequency of the LC tank. The device comprises a first inductor with a first end and a second end; a second inductor with one end coupled with the second end of the first inductor; and, a first trimmable wire connected to the first inductor in parallel and to the second inductor in series, which adjusts the central frequency by cutting off the first trimmable wire.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: August 24, 2010
    Assignee: Realtek Semiconductor Corp.
    Inventor: Ren Chieh Liu
  • Patent number: 5952896
    Abstract: A high efficiency radio frequency (RF) impedance matching network containing an "L-type" inductor-capacitor (LC) circuit where the capacitor is a variable capacitor coupled from an input port to ground and the inductor is a variable inductance inductor coupled from the input port to an output port. A blocking capacitor is provided between the inductor and the output port and a ceramic capacitor is coupled in parallel across the variable capacitor. The impedance match is tuned by physically adjusting tuning elements of both the inductor and capacitor. The variable inductor contains an improved inductor tuning element that optimizes current flow in the tuning elements and inductor. To further improve the efficiency of the matching network, the assembly uses an improved enclosure interior finish and various circuit optimization techniques that reduce contributions to match loop resistance.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: September 14, 1999
    Assignee: Applied Materials, Inc.
    Inventors: Richard R. Mett, Robert D. Greenway, Gabriel Bilek, Ajey Joshi
  • Patent number: 4056796
    Abstract: A UHF television tuner utilizes a mechanical fine tuning mechanism that alters the operation frequency of the oscillator of the tuner independently of the position of the main tuning shaft. The mechanical fine tuning mechanism utilizes a tuning slug disposed inside a tunable coil of the oscillator, and a rotary to linear motion translating mechanism is disposed within the fine tuning shaft for converting a rotational motion of the fine tuning shaft to a linear motion of the slug inside the coil.
    Type: Grant
    Filed: October 20, 1976
    Date of Patent: November 1, 1977
    Assignee: Sarkes Tarzian, Inc.
    Inventor: Alarico A. Valdettaro
  • Patent number: 4039982
    Abstract: A tuning circuit having a coaxial cavity with a movable toroidal section to effect inductive tuning. The outer conductor is tapered to effect capacitive tuning by movement of the toroidal section axially within the cavity due to varying of the width of the annular space between the outer conductor and the toroidal section.
    Type: Grant
    Filed: February 25, 1976
    Date of Patent: August 2, 1977
    Assignee: Continental Electronics Manufacturing Company
    Inventor: James O. Weldon