Patents by Inventor Ernest P. Ekelman

Ernest P. Ekelman 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: 6864843
    Abstract: A tunable patch antenna is described herein that includes a ground plane on which there is located a substrate and on which there is located a patch. The patch is split into two parts (e.g., rectangular parts) which are connected to one another by one or more voltage-tunable series capacitors. Each part has a radiating edge which is connected to one or more voltage-tunable edge capacitors. Also described herein, is a method for electronically tuning the tunable patch antenna to any frequency within a band of operation which is in a range of about 30% of the center frequency of operation.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: March 8, 2005
    Assignee: Paratek Microwave, Inc.
    Inventors: Cornelis Frederik du Toit, Ernest P. Ekelman
  • Patent number: 6759980
    Abstract: This invention provides a phased array antenna comprising an input, a feed network electronically coupled to the input, a plurality of radiating elements, a plurality of continuously voltage tunable phase shifters for receiving signals from the feed network and providing phase shifts for the signals prior to transmitting the signals to the radiating elements, and a controller for controlling the phase shift provided by the phase shifters. The phased array antennas can be configured to produce beams that can be scanned in one dimension (one-dimensional) or two dimensions (two-dimensional) by using continuously adjustable phase shifters that are based on low cost, low loss voltage-tunable dielectric materials.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: July 6, 2004
    Assignee: Paratek Microwave, Inc.
    Inventors: Shuguang Chen, Daniel F. DiFonzo, Ernest P. Ekelman
  • Patent number: 6756939
    Abstract: This invention provides a phased array antenna comprising an input, a feed network electronically coupled to the input, a plurality of radiating elements, a plurality of continuously voltage tunable phase shifters for receiving signals from the feed network and providing phase shifts for the signals prior to transmitting the signals to the radiating elements, and a controller for controlling the phase shift provided by the phase shifters. The phased array antennas can be configured to produce beams that can be scanned in one dimension (one-dimensional) or two dimensions (two-dimensional) by using continuously adjustable phase shifters that are based on low cost, low loss voltage-tunable dielectric materials.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: June 29, 2004
    Assignee: Paratek Microwave, Inc.
    Inventors: Shuguang Chen, Daniel F. DiFonzo, Ernest P. Ekelman
  • Publication number: 20040113842
    Abstract: A tunable patch antenna is described herein that includes a ground plane on which there is located a substrate and on which there is located a patch. The patch is split into two parts (e.g., rectangular parts) which are connected to one another by one or more voltage-tunable series capacitors. Each part has a radiating edge which is connected to one or more voltage-tunable edge capacitors. Also described herein, is a method for electronically tuning the tunable patch antenna to any frequency within a band of operation which is in a range of about 30% of the center frequency of operation.
    Type: Application
    Filed: August 14, 2003
    Publication date: June 17, 2004
    Inventors: Cornelis Frederik du Toit, Ernest P. Ekelman
  • Publication number: 20030151550
    Abstract: This invention provides a phased array antenna comprising an input, a feed network electronically coupled to the input, a plurality of radiating elements, a plurality of continuously voltage tunable phase shifters for receiving signals from the feed network and providing phase shifts for the signals prior to transmitting the signals to the radiating elements, and a controller for controlling the phase shift provided by the phase shifters. The phased array antennas can be configured to produce beams that can be scanned in one dimension (one-dimensional) or two dimensions (two-dimensional) by using continuously adjustable phase shifters that are based on low cost, low loss voltage-tunable dielectric materials.
    Type: Application
    Filed: February 10, 2003
    Publication date: August 14, 2003
    Inventors: Shuguang Chen, Daniel F. DiFonzo, Ernest P. Ekelman
  • Publication number: 20030151551
    Abstract: This invention provides a phased array antenna comprising an input, a feed network electronically coupled to the input, a plurality of radiating elements, a plurality of continuously voltage tunable phase shifters for receiving signals from the feed network and providing phase shifts for the signals prior to transmitting the signals to the radiating elements, and a controller for controlling the phase shift provided by the phase shifters. The phased array antennas can be configured to produce beams that can be scanned in one dimension (one-dimensional) or two dimensions (two-dimensional) by using continuously adjustable phase shifters that are based on low cost, low loss voltage-tunable dielectric materials.
    Type: Application
    Filed: February 10, 2003
    Publication date: August 14, 2003
    Inventors: Shuguang Chen, Daniel F. DiFonzo, Ernest P. Ekelman
  • Patent number: 6538603
    Abstract: This invention provides a phased array antenna comprising an input, a feed network electronically coupled to the input, a plurality of radiating elements, a plurality of continuously voltage tunable phase shifters for receiving signals from the feed network and providing phase shifts for the signals prior to transmitting the signals to the radiating elements, and a controller for controlling the phase shift provided by the phase shifters. The phased array antennas can be configured to produce beams that can be scanned in one dimension (one-dimensional) or two dimensions (two-dimensional) by using continuously adjustable phase shifters that are based on low cost, low loss voltage-tunable dielectric materials.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: March 25, 2003
    Assignee: Paratek Microwave, Inc.
    Inventors: Shuguang Chen, Daniel F. DiFonzo, Ernest P. Ekelman
  • Patent number: 4504805
    Abstract: A combiner for transmitting and receiving co-polarized microwave signals in a selected propagation mode in at least two different frequency bands, the combiner comprising a main waveguide dimensioned to simultaneously propagate signals in the different frequency bands, at least a portion of the main waveguide being overmoded; at first and second junctions spaced along the length of the main waveguide for coupling signals in the different frequency bands in and out of the main waveguide, at least the first junction being located in an overmoded portion of the main waveguide and having side-arm waveguide means associated therewith for propagating signals in one of the different frequency bands; filtering means disposed within the main waveguide and operatively associated with the first and second junctions, the filtering means having (1) a stopband characteristic for coupling signals in a first one of the frequency bands between the main waveguide and the first junction and the side-arm waveguide means associat
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: March 12, 1985
    Assignee: Andrew Corporation
    Inventors: Ernest P. Ekelman, Jr., Edward L. Ostertag