Patents by Inventor John T. Apostolos

John T. Apostolos 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).

  • MONOLITHIC BROADBAND ENERGY COLLECTOR WITH DICHROIC FILTERS AND MIRRORS EMBEDDED IN WAVEGUIDE
    Publication number: 20150107671
    Abstract: A solar energy collector includes a planar waveguide formed of multiple material layers having at least two different dielectric constants. Two or more dichroic filters disposed within the waveguide core, and two or more minors are also disposed within the waveguide core. At least one optical to electrical detector positioned in alignment with each of the dichroic filters, and at least one optical to electrical detector is aligned with each of the mirrors. The dichroic filter may be formed from a plurality of material layers.
    Type: Application
    Filed: November 5, 2014
    Publication date: April 23, 2015
    Inventors: Patricia Bodan, John T. Apostolos, Benjamin McMahon, William Mouyos
  • Continuous band antenna (CBA) with switchable quadrant beams and selectable polarization
    Patent number: 9013360
    Abstract: An antenna formed from one or more structures with sets of radiating elements oriented in four different, preferably orthogonal, directions. The radiating elements are further provided as multiple horizontal and vertical radiating section. The structure may be a six sided cube-like structure or a cylinder. A combining circuit provides omnidirectional, directional, and scanning/direction finding modes across a broad operating frequency range with multiple polarizations. The arrangement lends itself to implementation as a whip form factor well suited for vehicular applications.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: April 21, 2015
    Assignee: AMI Research & Development, LLC
    Inventors: John T. Apostolos, Judy Feng, William Mouyos
  • Extended performance SATCOM-ORIAN antenna
    Patent number: 8988303
    Abstract: An orientation independent antenna apparatus using a six sided conductive structure and triangular elements on a selected surface thereof, to provide both horizontal and vertical polarization mode feeds. In one implementation, a vertical coupling element is disposed within the structure so that four perpendicular surfaces are parasitically coupled to provide the vertical polarization mode. In other implementations, coaxial cable(s) may be used with a ferrite core and/or combiner circuits to provide the horizontal mode feed.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: March 24, 2015
    Assignee: AMI Research & Development, LLC
    Inventors: John T. Apostolos, Judy Feng, William Mouyos
  • NUCLEAR QUADRUPOLE RESONANCE SYSTEM
    Publication number: 20150054511
    Abstract: A Nuclear Quadrupole Resonance detection system with features that include: a) slab radiating structure for the transmit path; b) reduced impedance transmit radiator; c) portal-embedded stripline couplers for receive path; d) wideband chirps each encompassing multiple simultaneous resonances; e) chirp sequencing enabling three channel architecture; f) magnetic amplification effect of ferrite-based directional couplers; g) determining position of substance within portal.
    Type: Application
    Filed: August 22, 2014
    Publication date: February 26, 2015
    Inventors: John T. Apostolos, William Mouyos, Brian Molen, Kurt Colon, Judy Feng
  • Method and apparatus for sensing the presence of explosives, contraband and other molecules using nuclear quadrupole resonance and a swept frequency continuous wave source
    Patent number: 8922211
    Abstract: Stimulated emissions due to nuclear quadropole resonance are detected utilizing a terminated balanced transmission line and a directional coupler for the detection of explosives, contraband, narcotics and the like that exist between the transmission lines, in which a swept frequency continuous wave generator is utilized to scan between 100 KHz and 10 MHz.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: December 30, 2014
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: John T. Apostolos, Paul A. Zank, Judy Feng
  • Low power stimulated emission nuclear quadrupole resonance detection at multiple reference power levels
    Patent number: 8912788
    Abstract: System and methods for detecting substances such as explosives via the nuclear quadrupole resonance effect. We observe that the nuclear quadrupole resonances of explosives located within a cavity portal involve continuous Rabi transitions which are nonlinear processes since stimulated emission occurs. In other words, where there are no resonances caused by the presence of an explosive, high average power and low average power measurements should be identical. However, when resonances are stimulated by the system, the difference between these two conditions can be compared to determine a correction to measurements made when a person located in the cavity has explosive material on their person, without the need for separate empty portal or elaborate calibration procedures.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: December 16, 2014
    Assignee: AMI Research & Development, LLC
    Inventors: John T. Apostolos, Judy Feng, William Mouyos, Benjamin McMahon
  • Near field subwavelength focusing synthetic aperture radar with chemical detection mode
    Patent number: 8912943
    Abstract: Detection of objects such as a buried explosive device while operating from a moving platform using a radio frequency emission system having two modes. An electromagnetic wave emission and detection system operates in a first mode to locate objects of interest and in a second mode to determine if an object contains explosive materials. In the first mode, the emission and detection system preferably operates as a subwavelength focusing, wideband, superlens using a near field super gain synthetic aperture continuous wave (CW) swept radar. In the second mode the system preferably enabled after detection of an object in the first mode, uses chemical detection methods such as Nuclear Quadrupole Resonance (NQR).
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: December 16, 2014
    Assignee: AMI Research & Development, LLC
    Inventors: John T. Apostolos, Judy Feng, William Mouyos
  • Arrangement for multiple frequency, multiple portal NQR detection
    Patent number: 8901926
    Abstract: Nuclear quadrupole resonance measurement using two or more wire loop(s) within a space to define a portal, and driving the wire loop(s) with a baseband digital transmitter generating a chirped or stepped signal, to create a corresponding varying electromagnetic field within the portal. Coherent emissions reflected thereby are detected through a directional coupler feeding the transceiver. The detected coherent emissions are processed with a matched filter to determine presence of a target object within the portal.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: December 2, 2014
    Assignee: AMI Research & Development, LLC
    Inventors: John T. Apostolos, Judy Feng, William Mouyos, Benjamin McMahon
  • LOW POWER STIMULATED EMISSION NUCLEAR QUADRUPOLE RESONANCE DETECTION AT MULTIPLE REFERENCE POWER LEVELS
    Publication number: 20140333302
    Abstract: System and methods for detecting substances such as explosives via the nuclear quadrapole resonance effect. We observe that the nuclear quadrupole resonances of explosives located within a cavity portal involve continuous Rabi transitions which are nonlinear processes since stimulated emission occurs. In other words, where there are no resonances caused by the presence of an explosive, high average power and low average power measurements should be identical. However, when resonances are stimulated by the system, the difference between these two conditions can be compared to determine a correction to measurements made when a person located in the cavity has explosive material on their person, without the need for separate empty portal or elaborate calibration procedures.
    Type: Application
    Filed: May 24, 2013
    Publication date: November 13, 2014
    Applicant: AMI Research & Development, LLC
    Inventors: John T. Apostolos, Judy Feng, William Mouyos, Benjamin McMahon
  • MULTIBAND WHIP ANTENNA
    Publication number: 20140327488
    Abstract: A multi-band whip antenna having a 30 MHz to 2 GHz bandwidth and an L-band dipole has its coverage extended up to 6 GHz by eliminating nulls and reducing VSWR problems that are cured through the utilization of a sleeve over the feedpoint of the L-band antenna. Chokes in the form of sleeves are provided at either end of the L-band dipole to shorten the L-band antenna for preventing reverse polarity currents at the L-band antenna feedpoint, with the antenna further including the use of double shielded meanderlines to provide improved performance between 410-512 MHz and in which a capacitance sleeve is added at the bottom of the L-band antenna to effectively elongate the antenna below the L-band to permit operation below 700 MHz.
    Type: Application
    Filed: July 16, 2014
    Publication date: November 6, 2014
    Inventors: John T. Apostolos, William Mouyos, Judy Feng
  • FINGERPRINT BASED SMARTPHONE USER VERIFICATION
    Publication number: 20140310804
    Abstract: A touch screen, now incorporated in most smart phones, presents an effective and transparent method to incorporate continuous active user verification schemes. The projected capacitive grid structure can be used to capture enough information to verify that a valid user currently has possession of the mobile device, even while the user is not consciously engaged in an active verification interface. Further processing, such as habitual gesture recognition, can augment the process.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 16, 2014
    Applicant: AMI Research & Development, LLC
    Inventors: John T. Apostolos, William Mouyos, Judy Feng, Dwayne T. Jeffrey
  • Quadratic phase weighed solar receiver
    Patent number: 8855453
    Abstract: A leaky travelling wave array of optical elements provide a solar wavelength rectenna.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: October 7, 2014
    Assignee: AMI Research & Development, LLC
    Inventors: John T. Apostolos, Judy Feng, William Mouyos
  • DETECTION PROCESSING FOR NQR SYSTEM
    Publication number: 20140266209
    Abstract: A system that uses the nuclear quadrupole resonant effect to detect the presence of materials of interest, such as may be excited by radio frequency fields generated within a portal. Transmitted chirp signals may be processed using matching filtering and other signal processing to accurately detect the presence of such materials.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: AMI Research & Development, LLC
    Inventors: John T. Apostolos, Judy Feng, William Mouyos
  • SPIRAL SURFACE ELECTROMAGNETIC WAVE DISPERSIVE DELAY LINE
    Publication number: 20140266503
    Abstract: Dispersive properties of a linear dispersive delay line are retained in a spiral configuration by constraining the radius of curvature depending on a desired propagation mode. The compact form factor spiral can be either a continuous spiral or a piecewise linear approximation. The spiral comprises a highly dielectric waveguide such as titanium dioxide or barium tetratitanate. Preferably, a spacer with a low dielectric constant and a microstrip are disposed on the top surface. The microstrip prevents attenuation of low frequencies, thereby increasing the operating frequency range. A second dielectric spacer and a second microstrip can be deposited on the bottom surface of the waveguide. Alternatively, the bottom surface of the waveguide can face a ground plane. The waveguide can be fed by horns or half-horns.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: AMI Research & Development, LLC
    Inventors: John T. Apostolos, William Mouyos, Benjamin McMahon
  • Leaky mode solar receiver using continuous wedge lens
    Patent number: 8824843
    Abstract: A leaky travelling wave array of optical elements provide a solar wavelength rectenna.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: September 2, 2014
    Assignee: AMI Research & Development, LLC
    Inventors: John T. Apostolös, Judy Feng, William Mouyos
  • NQR DETECTION FROM CONTINUOUS RABI TRANSITIONS
    Publication number: 20140210464
    Abstract: Nuclear quadrupole resonance measurement using two or more wire loop(s) within a space to define a portal, and driving the wire loop(s) with a baseband digital transmitter generating a chirped or stepped signal, to create a corresponding varying electromagnetic field within the portal. Coherent emissions reflected thereby are detected through a directional coupler feeding the transceiver. The detected coherent emissions are processed with a matched filter to determine presence of a target object within the portal.
    Type: Application
    Filed: September 27, 2012
    Publication date: July 31, 2014
    Inventors: John T. Apostolos, Judy Feng, William Mouyos, Benjamin McMahon
  • Method and apparatus for avoiding pattern blockage due to scatter
    Patent number: 8791875
    Abstract: A method and apparatus is provided for avoiding pattern blockage due to scatter from an object in which an artificial surface directs the energy from the antenna prior to arriving at a blocking structure such that either the wave fronts of the energy are linear when they arrive at the blocking structure or the phase of the energy incident on the object is adjusted such that the energy reflected from the object is in phase with energy directly from the antenna radiating elsewhere in the far field pattern, or both.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: July 29, 2014
    Assignee: BAE Systems Information and Electronics Systems Integration Inc.
    Inventors: John T. Apostolos, David P. Charette, Roland A. Gilbert
  • Dual UHF dipole quadrafiler helix antenna
    Patent number: 8786503
    Abstract: A dual purpose antenna is provided with the UHF antenna in the form of a pair of copper tubes to provide an off center fed dipole, with a pair of quadrafiler helix L1 and L2 GPS antennas stacked on top of the UHF antenna, and with the top section of the UHF dipole providing a ground plain for the GPS antenna. The antennas are fed internally by two coaxial feeds, one feeding the UHF antenna, the other passing through the UHF antenna to feed the GPS antennas. In one embodiment, a tuning coil is provided at the base of the UHF antenna by the coiling of the two coaxial feeds around a non-conductive mandrel, with copper taping placed on top of the coiled coaxial sections to provide an LC circuit to lower the resonant frequency of the UHF antenna to 225 MHz.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: July 22, 2014
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: John T. Apostolos, Benjamin G. McMahon
  • Transmission line array for explosive detection using nuclear quadrupole resonance
    Patent number: 8773127
    Abstract: A transmission line array is used for explosive/contraband detection using nuclear quadrupole resonance in which the array is driven in-phase with synchrony frequency-swept signals. Each of the balanced transmission lines is fed with a low power swept frequency source and stimulated emissions are picked out with a directional coupler. Location is provided using a cross grid array or a phase detector is used for each balanced line, with phase determining the distance to the sensed substance.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: July 8, 2014
    Assignee: R.A. Miller Industries, Inc.
    Inventors: John T. Apostolos, Paul A. Zank
  • WIDEBAND LIGHT ENERGY WAVEGUIDE AND DETECTOR
    Publication number: 20140182656
    Abstract: An electromagnetic energy concentrator uses a prism and waveguide with a gap layer of uniform thickness disposed between the prism and a first surface of waveguide. Energy detectors, which may be photovoltaics or miniaturized antenna elements are disposed adjacent to and co-extensive with a second surface of the waveguide. The detectors operate in each of at least two bands; a distance between detectors operating in a given band depends on a wavelength in the given band.
    Type: Application
    Filed: November 13, 2013
    Publication date: July 3, 2014
    Applicant: AMI Research & Development, LLC
    Inventors: Patricia Bodan, John T. Apostolos, Benjamin McMahon, William Mouyos