Patents by Inventor Eswarappa Channabasappa

Eswarappa Channabasappa 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: 20040090368
    Abstract: An antenna unit formed in the shape of a hollow box comprising (a) a substrate forming the front side of the antenna unit, (b) a first microstrip antenna array formed on the substrate, (c) a second microstrip antenna array formed on the substrate, (d) a ground plane forming the rear side of the antenna unit, and (e) a plurality of periodic filters formed on the ground plane. The periodic filters are formed by etching a series of circular patterns, or holes, through the ground plane. The periodic stop band filters provide for improved isolation between the microstrip antenna arrays, without the need for adding additional costly or space consuming components.
    Type: Application
    Filed: November 7, 2002
    Publication date: May 13, 2004
    Inventors: Eswarappa Channabasappa, Frank Kolak, Richard Alan Anderson
  • Publication number: 20040051603
    Abstract: A cross-coupled dielectric resonator circuit. Resonator circuits in accordance with the invention may be used to build low-loss compact filters, oscillators, and other circuits, particularly microwave circuits. The resonators are arranged relatively to each other within an enclosure in a very efficient and compact design that enhances adjustability and coupling between adjacent resonators and the cross-coupling of alternate resonators.
    Type: Application
    Filed: October 10, 2002
    Publication date: March 18, 2004
    Inventors: Kristi Dhimiter Pance, Eswarappa Channabasappa
  • Publication number: 20040051602
    Abstract: The invention is a dielectric resonator in the shape of a truncated cone and variations with a longitudinal through hole. The truncated cone shape physically displaces the H11l mode from the TE mode in the longitudinal direction of the cone. Particularly, the TE mode tends to concentrate in the base of the cone while the H11 mode tends to concentrate at the top of the cone. By truncating the cone so as to eliminate the portion of the cone where the H11 mode field exists, yet keep the portion of the cone where the TE mode exists, the H11 mode can be virtually eliminated while having no effect on the magnitude of the TE mode.
    Type: Application
    Filed: October 10, 2002
    Publication date: March 18, 2004
    Inventors: Kristi Dhimiter Pance, Eswarappa Channabasappa
  • Patent number: 6664872
    Abstract: An iris-less combline filter and a method of providing the iris-less combline filter are disclosed. The filter includes a conductive housing, first and second resonators disposed in the housing, and at least one capacitive coupling element disposed between the first and second resonators, wherein there is no decoupling iris between the first and second resonators.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: December 16, 2003
    Assignee: Tyco Electronics Corporation
    Inventors: Eswarappa Channabasappa, Chris McNamara
  • Patent number: 6646526
    Abstract: A surface-mountable millimeter-wave waveguide filter is constructed using irises in a rectangular waveguide formed in a dielectric material such as glass. The filter structure is surface-mountable, has a single dielectric layer, and can be manufactured using a suitable monolithic microwave integrated circuit (MMIC) process. The filter has potential applications in millimeter-wave systems such as Local Multipoint Distribution System (LMDS) and Autonomous Cruise Control (ACC) radar for automobiles.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: November 11, 2003
    Assignee: M/A-Com, Inc.
    Inventors: Noyan Kinayman, Eswarappa Channabasappa, Allan Buckle, Nitin Jain
  • Publication number: 20030174032
    Abstract: A surface-mountable millimeter-wave waveguide filter is constructed using irises in a rectangular waveguide formed in a dielectric material such as glass. The filter structure is surface-mountable, has a single dielectric layer, and can be manufactured using a suitable monolithic microwave integrated circuit (MMIC) process. The filter has potential applications in millimeter-wave systems such as Local Multipoint Distribution System (LMDS) and Autonomous Cruise Control (ACC) radar for automobiles.
    Type: Application
    Filed: March 14, 2002
    Publication date: September 18, 2003
    Inventors: Noyan Kinayman, Eswarappa Channabasappa, Allan Buckle, Nitin Jain
  • Patent number: 6509874
    Abstract: A millimeter wave radar system including a microstrip antenna array that provides reduced return loss at microstrip antenna ports. The millimeter wave radar system includes at least one channel formed in a surface of a metal backing plate and a microstrip antenna array assembly. The assembly includes a plurality of conductive microstrips, a ground plane, and a dielectric substrate disposed between the conductive microstrips and the ground plane to form a plurality of microstrip transmission lines. The metal plate surface is mounted to the ground plate to form at least one waveguide. The ground plane has a plurality of slots formed therethrough to form a plurality of waveguide-to-microstrip transmission line transitions. The conductive microstrips have a plurality of tuning stubs coupled thereto and configured to provide reactive matching for the plurality of waveguide-to-microstrip transmission line transitions.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: January 21, 2003
    Assignee: Tyco Electronics Corporation
    Inventors: Frank Kolak, Eswarappa Channabasappa
  • Publication number: 20030011517
    Abstract: A millimeter wave radar system including a microstrip antenna array that provides reduced return loss at microstrip antenna ports. The millimeter wave radar system includes at least one channel formed in a surface of a metal backing plate and a microstrip antenna array assembly. The assembly includes a plurality of conductive microstrips, a ground plane, and a dielectric substrate disposed between the conductive microstrips and the ground plane to form a plurality of microstrip transmission lines. The metal plate surface is mounted to the ground plate to form at least one waveguide. The ground plane has a plurality of slots formed therethrough to form a plurality of waveguide-to-microstrip transmission line transitions. The conductive microstrips have a plurality of tuning stubs coupled thereto and configured to provide reactive matching for the plurality of waveguide-to-microstrip transmission line transitions.
    Type: Application
    Filed: July 13, 2001
    Publication date: January 16, 2003
    Inventors: Frank Kolak, Eswarappa Channabasappa
  • Publication number: 20030011447
    Abstract: An iris-less combline filter and a method of providing the iris-less combline filter are disclosed. The filter includes a conductive housing, first and second resonators disposed in the housing, and at least one capacitive coupling element disposed between the first and second resonators, wherein there is no decoupling iris between the first and second resonators.
    Type: Application
    Filed: November 9, 2001
    Publication date: January 16, 2003
    Inventors: Eswarappa Channabasappa, Chris McNamara
  • Patent number: 6452550
    Abstract: A millimeter wave radar system that is less sensitive to process misalignment. The millimeter wave radar system includes at least one channel formed in a surface of a backing plate; and, a microstrip antenna array assembly including a plurality of conductive microstrips, a ground plane, and a dielectric substrate disposed between the conductive microstrips and the ground plane to form a plurality of microstrip transmission lines. The plate surface is mounted to the ground plate to form at least one waveguide. The ground plane has a plurality of slots formed therethrough to form a plurality of waveguide-to-microstrip transmission line transitions. A portion of the ground plane comprising a wall of the waveguide has a plurality of slots formed therethrough for transferring electromagnetic wave energy between the microstrip transmission lines and the waveguide. The slots are placed on the same side of the longitudinal centerline of the waveguide wall.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: September 17, 2002
    Assignee: Tyco Electronics Corp.
    Inventors: Eswarappa Channabasappa, Frank Kolak