Patents by Inventor Perry A. Macdonald
Perry A. Macdonald 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).
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Patent number: 8058935Abstract: An apparatus comprises a structure, an array of oscillator units, a plurality of waveguides in the structure, and a synchronizing cavity located within the structure. The array of oscillator units has a plurality of rows and a plurality of columns associated with the structure. Oscillator units in a row within the array of oscillator units are directly coupled to each other. The plurality of waveguides is configured to couple the array of oscillator units to the synchronizing cavity. The synchronizing cavity is configured to cause the array of oscillator units to operate at substantially a common frequency.Type: GrantFiled: February 5, 2010Date of Patent: November 15, 2011Assignee: The Boeing CompanyInventors: Jonathan James Lynch, Perry A. Macdonald
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Publication number: 20110193659Abstract: An apparatus comprises a structure, an array of oscillator units, a plurality of waveguides in the structure, and a synchronizing cavity located within the structure. The array of oscillator units has a plurality of rows and a plurality of columns associated with the structure. Oscillator units in a row within the array of oscillator units are directly coupled to each other. The plurality of waveguides is configured to couple the array of oscillator units to the synchronizing cavity. The synchronizing cavity is configured to cause the array of oscillator units to operate at substantially a common frequency.Type: ApplicationFiled: February 5, 2010Publication date: August 11, 2011Applicant: The Boeing CompanyInventors: Jonathan James Lynch, Perry A. MacDonald
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Patent number: 7908309Abstract: A method of transforming an analog electrical signal into a wavelet transform. The analog electrical signal is input into a transmission line system as a transmission line input signal. A wavelet transform lifting is performed on the transmission line input signal to provide at least a first sum signal and a first difference signal of the transmission line input signal. The sum signal is designated as a first wavelet transform approximation signal and the difference signal is designated as a first wavelet transform detail signal.Type: GrantFiled: March 14, 2005Date of Patent: March 15, 2011Assignee: HRL Laboratories, LLCInventor: Perry Macdonald
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Patent number: 7138937Abstract: A circulator comprises first and second couplers. The first and second couplers are coupled by first and second transmission lines. First and second magnetic fields are provided crossing the first and second transmission lines, respectively. In an exemplary embodiment, the magnetic fields are substantially parallel with and within a plane defined by the first and second transmission lines.Type: GrantFiled: June 6, 2006Date of Patent: November 21, 2006Assignee: Raytheon CompanyInventor: Perry Macdonald
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Publication number: 20060256002Abstract: A circulator comprises first and second couplers. The first and second couplers are coupled by first and second transmission lines. First and second magnetic fields are provided crossing the first and second transmission lines, respectively. In an exemplary embodiment, the magnetic fields are substantially parallel with and within a plane defined by the first and second transmission lines.Type: ApplicationFiled: June 6, 2006Publication date: November 16, 2006Inventor: Perry Macdonald
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Patent number: 7078983Abstract: A circulator comprises first and second couplers. The first and second couplers are coupled by first and second transmission lines. First and second magnetic fields are provided crossing the first and second transmission lines, respectively. In an exemplary embodiment, the magnetic fields are substantially parallel with and within a plane defined by the first and second transmission lines.Type: GrantFiled: June 9, 2004Date of Patent: July 18, 2006Assignee: Raytheon CompanyInventor: Perry Macdonald
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Patent number: 7068128Abstract: A compact combline resonator and filter. The annular radius of inductive posts are modulated along the length of the inductive post to establish a desired inductive value for a series inductive capacitive resonator. The filter has a waveguide channel with an input port and an output port. One or more of the inductive posts are located in the waveguide channel, the one or more inductive posts providing filter poles and coupling the input port to the output port, each inductive post being electrically connected at one post end to a wall of the waveguide channel and providing a capacitance gap between an other post end and an opposing wall of the waveguide channel to provide a series inductive capacitive resonator.Type: GrantFiled: July 21, 2004Date of Patent: June 27, 2006Assignee: HRL Laboratories, LLCInventors: Perry Macdonald, Peter Petre
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Publication number: 20050275586Abstract: A circulator comprises first and second couplers. The first and second couplers are coupled by first and second transmission lines. First and second magnetic fields are provided crossing the first and second transmission lines, respectively. In an exemplary embodiment, the magnetic fields are substantially parallel with and within a plane defined by the first and second transmission lines.Type: ApplicationFiled: June 9, 2004Publication date: December 15, 2005Inventor: Perry Macdonald
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Patent number: 5835128Abstract: A system for redistributing a television signal to a multiplicity of receiver units within a multiple dwelling unit (MDU) includes a main receiving antenna which receives a broadband television signal and a translation device that translates the broadband television signal into a different carrier frequency band. One or more broadcasting antennas, located at advantageous sites within the MDU, transmit the translated television signal along one or more walls of the MDU to be received by antennas associated with one or more individual receiver units. Each receiver unit demodulates the received television signal and provides a user-specified channel to a television set for display.Type: GrantFiled: November 27, 1996Date of Patent: November 10, 1998Assignee: Hughes Electronics CorporationInventors: Perry A. Macdonald, Lawrence Larson, Jeffrey B. Shealy, Michael Case, Mehran Matloubian
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Patent number: 5757074Abstract: A microwave/millimeter wave circuit structure supports discrete circuit elements by flip-chip mounting to an interconnection network on a low cost non-ceramic and non-semiconductor dielectric substrate, preferably Duroid. The necessary precise alignment of the circuit elements with contact pads on the substrate network required for the high operating frequencies is facilitated by oxidizing the interconnection network, but providing the contact pads from a non-oxidizable material to establish a preferential solder bump wetting for the pads. Alternately, the contact bumps on the flip-chips can be precisely positioned through corresponding openings in a passivation layer over the interconnection network. For thin circuit substrates that are too soft for successful flip-chip mounting, stiffening substrates are laminated to the circuit substrates.Type: GrantFiled: July 29, 1996Date of Patent: May 26, 1998Assignee: Hughes Electronics CorporationInventors: Mehran Matloubian, Perry A. Macdonald, David B. Rensch, Lawrence E. Larson
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Patent number: 5695155Abstract: A sensor is provided for detecting the presence of dielectric media, e.g., ice. The sensor includes a plurality of microstrip resonators which are positioned for electromagnetic coupling with a microstrip transmission line. The resonators produce amplitude minima in a radio-frequency signal that is carried over the transmission line. The resonance of the resonators changes in response to the addition of a dielectric coating. Each resonator can be configured with a different resonant frequency which serves as a signature that identifies the respective resonator's position. The sensor has a thin aerodynamic profile, can conform to nonplanar surfaces and its installation requires no intrusion into an aircraft skin.Type: GrantFiled: September 21, 1995Date of Patent: December 9, 1997Assignee: Hughes Aircraft CompanyInventors: Perry A. Macdonald, Jennifer M. Butler
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Patent number: 5633613Abstract: The microwave impedance across an aperture in a conductive shield member of a transmission structure is varied as a microwave signal transits the aperture. The impedance is changed by positioning a variable impedance device across the aperture. A slit divides the shield member into two portions to facilitate the application of a modulating signal (56) across the device.Type: GrantFiled: February 22, 1995Date of Patent: May 27, 1997Assignee: Hughes ElectronicsInventor: Perry A. MacDonald
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Patent number: 5629241Abstract: A microwave/millimeter wave circuit structure supports discrete circuit elements by flip-chip mounting to an interconnection network on a low cost non-ceramic and non-semiconductor dielectric substrate, preferably Duroid. The necessary precise alignment of the circuit elements with contact pads on the substrate network required for the high operating frequencies is facilitated by oxidizing the interconnection network, but providing the contact pads from a non-oxidizable material to establish a preferential solder bump wetting for the pads. Alternately, the contact bumps on the flip-chips can be precisely positioned through corresponding openings in a passivation layer over the interconnection network. For thin circuit substrates that are too soft for successful flip-chip mounting, stiffening substrates are laminated to the circuit substrates.Type: GrantFiled: July 7, 1995Date of Patent: May 13, 1997Assignee: Hughes Aircraft CompanyInventors: Mehran Matloubian, Perry A. Macdonald, David B. Rensch, Lawrence E. Larson
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Patent number: 5608413Abstract: A slot radiator and a patch radiator are formed in a single antenna which is connected to a handheld, wireless telephone. The antenna can be pivoted to operational positions and excited to radiate linearly-polarized signals or circularly-polarized signals whose radiation patterns are respectively directed azimuthally and elevationally.Type: GrantFiled: June 7, 1995Date of Patent: March 4, 1997Assignee: Hughes Aircraft CompanyInventor: Perry A. Macdonald
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Patent number: 5581217Abstract: Shielding structures are provided for microwave circuits with substrate members and shield members which are formed from conventional substrates. The shield members are shaped and joined to the substrate members to form conductive compartments that substantially surround the microwave circuits and the compartments are closed with a conductive cover. The substrate members and shield members form parallel-plate waveguides which communicate between the compartments. The loss of these waveguides is increased with air-dielectric posts to obtain greater isolation between compartments.Type: GrantFiled: September 21, 1995Date of Patent: December 3, 1996Assignee: Hughes Aircraft CompanyInventor: Perry A. Macdonald
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Patent number: 5528209Abstract: A monolithic microwave integrated circuit is formed by positioning a distributed, transmission-line network over a microwave-device structure. The ground plane of the transmission-line network adjoins an interconnect system of the microwave-device structure and signal lines of the transmission-line network are adapted to communicate with the microwave-device structure through orifices of the ground plane. The invention facilitates the use of low-cost silicon-based transistors in monolithic microwave integrated circuits.Type: GrantFiled: April 27, 1995Date of Patent: June 18, 1996Assignee: Hughes Aircraft CompanyInventors: Perry A. Macdonald, Lawrence E. Larson, Michael G. Case, Mehran Matloubian, Mary Y. Chen, David B. Rensch