Tacan Patents (Class 342/399)
  • Patent number: 10411357
    Abstract: The ultra-wideband unipole antenna is a variant on a monocone antenna, including a plurality of electrically conductive rods that act as a parallel inductive-capacitive (L-C) network for improving the impedance match between the radiating element of the antenna and the antenna's feed. An electrically conductive conical surface having a vertex end and a base end acts as the radiating element. The vertex end is positioned adjacent to, and spaced apart from, a ground plane plate. Each electrically conductive rod has opposed first and second ends, the first end being secured to the electrically conductive conical surface, and the second end being secured to the ground plane plate. A coaxial cable feed line has a center conductor and an outer conductor. The center conductor is in electrical communication with the vertex end of the electrically conductive conical surface, and the outer conductor is in electrical communication with the ground plane plate.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: September 10, 2019
    Assignee: Kind Saud University
    Inventors: Muhammad Ahmad Ashraf, Waleed Tariq Sethi, Khaled Issa, Habib Fathallah, Saleh Alshebeili
  • Patent number: 10074909
    Abstract: Disclosed are exemplary embodiments of omnidirectional single-input single-output (SISO) multiband/broadband antennas. In an exemplary embodiment, an omnidirectional SISO multiband/broadband antenna generally includes a radiator element having a single piece construction with a stamped cone shape defined by multiple stamped portions.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: September 11, 2018
    Assignee: Laird Technologies, Inc.
    Inventors: Choon Chung Su, Athanasios Petropoulos, Kok Jiunn Ng
  • Patent number: 9934703
    Abstract: The self-adhesive label (10) produced in relief in order visually and/or in a tactile manner to simulate decorative etching of the material of a container or a decorative seal or stamp applied to the container, includes: a layer of adhesive (105); a sheet of flexible plastic (110), one face of which is entirely covered by the layer of adhesive; and an extra thickness (120) formed on the opposite face of the sheet of flexible plastic to the layer of adhesive. The extra thickness includes a flexible plastic and covers the edge (115) of the sheet to form a decorative design simulating an engraved relief. The peripheries of the extra thickness and of the sheet of plastic are cut jointly, the cut edge of the extra thickness thus coming as a continuation of the cut edge of the sheet up to the lower surface of the sheet of flexible plastic.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: April 3, 2018
    Assignee: CEVENPACK
    Inventor: Jean-David Quintin
  • Patent number: 9935371
    Abstract: An example method of designing a multi-band antenna includes specifying a first portion of the multi-band antenna in a tangible medium, where the first portion corresponds to an existing design of a single-band monopole antenna for operating in a first frequency band, and specifying in the tangible medium a second portion of the multi-band antenna that is added to the first portion, where the second portion includes a dipole parasitic resonator that is resonant in a second frequency band.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: April 3, 2018
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: James W. Jervis, Fanfan He
  • Patent number: 9859948
    Abstract: A microprocessor includes a memory, an input/output port and a switch controller. Transmission data, a spread code and an inverted code are stored in the memory. The switch controller generates a spread spectrum signal by calling up either of the spread code or the inverted code in accordance with a bit of the transmission data. A switch connected to the input/output port is switched on and off based on the spread spectrum signal. In addition, an antenna is connected to the input/output port via a coupler. An oscillation circuit includes a reference oscillator and a BPF and inputs a harmonic of a reference signal to the coupler as a carrier wave.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: January 2, 2018
    Inventors: Makoto Yasutake, Atsuyuki Yuasa
  • Patent number: 9847572
    Abstract: A high-frequency reflector antenna (1) is provided that includes at least one main reflector (2), at least one sub-reflector (3) and at least one horn (4). The stationary elements (5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8) for influencing the direction-dependent reception characteristic are present in the beam path between the main reflector (2) and the horn (4). The stationary elements (5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8) may protrude into the free aperture area (6) of the horn (4). The stationary elements (5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8) are switchable dipole elements (5.1.1, 5.2.1, 5.3.1, 5.4.1, 5.5.1, 5.6.1, 5.7.1, 5.8.1) that are arranged with their dipole axis (15) in a manner to influence the reception characteristics of elliptically to circularly or linearly polarised high-frequency radiation.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: December 19, 2017
    Assignee: EPAK GMBH
    Inventor: Mario Nowack
  • Patent number: 9712199
    Abstract: A receiver for signals. The receiver comprises, an amplifier arranged to receive and amplify the signals received by the receiver. The receiver also comprises a linearizer arranged to linearize the amplitude value of the output signals from the amplifier. In the receiver, the linearizer is arranged to perform the linearizing by means of determining actual and desired values of a statistical function for the amplitude values of the output signals from the amplifier and to replace the amplitude values of the output signals from the amplifier with amplitude values which have the same desired values of the statistical function. In embodiments of the receiver, the statistical function is the cumulative distribution function.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: July 18, 2017
    Inventor: Sima Shahsavari
  • Patent number: 9293815
    Abstract: An ultra-wideband antenna is provided. The antenna includes a cone shaped ground element and a radiating element. The cone shaped ground element has a first vertex region and an aperture formed through the first vertex region. The cone shaped ground element is configured to form an electrical ground. The radiating element includes a cone shaped radiator and a spherical shaped radiator. The cone shaped radiator has a second vertex region that is electrically connectable to a feed element mounted through the aperture of the cone shaped ground element. The spherical shaped radiator is mounted to the cone shaped radiator opposite the second vertex region.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: March 22, 2016
    Inventors: Robert Sylvester Horner, Lawrence Todd Short Bull, Robert Joseph Motyl
  • Patent number: 9153873
    Abstract: Exemplary embodiments are provided of multiple-antenna systems with enhanced and/or good isolation and directivity. In one exemplary embodiment, a system generally includes a ground plane and two or more antenna elements coupled to the ground plane. The system also includes two or more low frequency isolators/reflectors and two or more high frequency isolators/reflectors coupled to the ground plane.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: October 6, 2015
    Assignee: Laird Technologies, Inc.
    Inventors: Kok Jiunn Ng, Tze Yuen Ng
  • Patent number: 8279110
    Abstract: Method making it possible to reconstruct a first signal taking the form of a series of pulses of width T, characterized in that it comprises a step in which a delay ? fixed with respect to the first signal to be reconstructed is introduced into a second signal having a sinusoidal shape and in that the porches of width T of the first signal at an instant t are substituted with portions of sinusoid of the second delayed sinusoidal signal corresponding to an instant t?1 so as to reconstruct a signal having a sinusoidal shape.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: October 2, 2012
    Assignee: Thales
    Inventor: Julien Colle
  • Patent number: 5157408
    Abstract: A radio system for determining the range and bearing of mobile equipment, such as an aircraft, relative to reference equipment such as an aircraft carrier, with low probability of interception (LPI). The aircraft remains equipped with high power range and bearing determination equipment, such as TACAN equipment. Reference equipment transmits a LPI beacon, such as a pseudo noise code spread spectrum signal through a rotating beam antenna to amplitude modulate the beacon as a function of antenna orientation. The PN code is inverted as the antenna passes through a reference bearing. Mobile LPI equipment determines bearing and generates a high power signal, such as an emulated TACAN beacon signal. High power range and bearing equipment extracts bearing information from the emulated signal and display it. Range can be determined in a cooperative mode. Mobile LPI equipment transmits a LPI interrogation signal. Reference LPI equipment returns a LPI reply signal.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: October 20, 1992
    Assignee: NavCom Defence Electronics, Inc.
    Inventors: Kenneth M. Wagner, William Stahley, James R. Van Cleave
  • Patent number: 5128873
    Abstract: Aircraft rendezvous is facilitated by operating airborne remote aircraft TACAN stations in the inverse bearing mode and using low data rate range interrogation and range reply signals for determining bearing. An aircraft determines its bearing to another similarly equipped aircraft by switching its antenna to an omnidirectional pattern and transmitting range interrogation pulses and then switching its antenna to a rotating directional pattern and receiving range interrogation and range reply signals from the other aircraft. The TACAN station calculates the bearing to the other aircraft using the low data rate signals, thereby obviating the necessity of using a high power base TACAN station.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: July 7, 1992
    Assignee: Rockwell International Corporation
    Inventors: John H. Gilmour, John S. Godleski, Randolph L. Carter, Patrick F. Didier
  • Patent number: 4905012
    Abstract: An antenna feed for a TACAN circular array. A power divider divides a source of radio frequency signals into zero, first and ninth order mode signals. A second power divider divides the zero mode input signal into a plurality of output signals each driving a pair of elements of the TACAN array. A second conventional matrix of radio frequency components receives the first and ninth mode excitation signals. A phase combining network combines the first and ninth mode signals so as to produce a plurality of signals each driving a pair of antenna elements. An output hybrid coupler combines the zero phase mode with the phase combined signals to produce the required TACAN azimuth antenna pattern.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: February 27, 1990
    Assignee: ISC Cardion Electronics, Inc.
    Inventor: Stephen J. Foti
  • Patent number: 4730192
    Abstract: A monitor for an electronic TACAN (ELTA) includes a 16-way switch whereby samples of the r.f. signal fed to each TACAN antenna element are fed via a common lead 30 to (a) means for r.f. phase correlating the samples with the transmitter generated signals, and (b) means for determining the relative phse and amplitude of the low frequency modulations in the sampled signals.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: March 8, 1988
    Assignee: International Standard Electric
    Inventor: Francis G. Overbury
  • Patent number: 4698637
    Abstract: A device for pulse modulation automatic control, where the modulation is a combined plurality of pulse components. Each pulse component is singly controlled by a respective control voltage or current, the control voltages and/or currents being fully independent from the output demodulated pulse level and from the number, per time unit, of pulses.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: October 6, 1987
    Assignee: International Standard Electric Corporation
    Inventor: Giuseppe Bertocchi
  • Patent number: 4682181
    Abstract: A flush-mounted radiating antenna is disclosed which can be electronically switched to produce a rotating directional field with no moving parts in the antenna element itself or with the appropriate electronics in the entire mechanism. This is accomplished by utilizing pie-shaped sections on the flush surface which are capacitively coupled to a central feed element and shorting some of the pie-shaped capacitively coupled elements to a ground plane whereby the normally omnidirectional pattern is perturbed to a directional pattern.
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: July 21, 1987
    Assignee: Rockwell International Corporation
    Inventors: Theodore A. Dumas, Leslie V. Griffee
  • Patent number: 4646097
    Abstract: A precision distance measuring equipment (DME/P) receiver for detecting an RF signal including at least one interrogation pulse is described. The DME/P receiver includes first and second signal processing channels. The first processing channel includes a wideband filter, of bandwidth BW1, for receiving the processed RF signal and in response thereto generating a wideband (FA) mode signal proportional to the logarithm thereof. The second signal processing channel includes a narrowband filter, of bandwidth BW2, for receiving the processed RF signal and in response thereto generating a narrowband (IA) mode signal proportional to the logarithm thereof, the bandwidth BW2 of the narrowband filter being within the bandwidth BW1 of the wideband filter.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: February 24, 1987
    Assignee: E-Systems, Inc.
    Inventor: Dennis D. King
  • Patent number: 4641142
    Abstract: A TACAN beacon is disclosed in which the pulse-modulated carrier signal generated in a transmitter is applied to the elements of a circular antenna array through controllable phase shifters that generate 15-Hz and 135-Hz sidebands through, switches, and through a Butler matrix. A switching facility generates two states. In the first state, the phase shifters are controlled to generate the upper and lower 15-Hz sidebands and the upper 135-Hz sideband, respectively. In the second state, they are controlled to form the respective opposite sidebands.The Butler matrix generates, radio-frequency phase-rotation fields at the antenna. In the two states, the ordinal numbers of the radio-frequency phase-rotation fields differ in their signs. The absolute value of the largest ordinal number is smaller than or equal to six, and the sum of the absolute values of the ordinal numbers for the carrier signal and the upper or lower 135-Hz sideband is equal to 9.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: February 3, 1987
    Assignee: International Standard Electric Corporation
    Inventors: Gerhard Greving, Gunther Hofgen, Rudiger Zeitz
  • Patent number: 4636958
    Abstract: A receiver for pulse amplitude modulated TACAN signals having 15 Hz and 135 Hz modulating components and which determines the TACAN bearing angle by calculating the phase shift angles .phi.15 and .phi.135 of those components of the received signals. The amplitudes of the received pulses and their times of arrival over a given time interval are stored in a memory. From such stored values a microprocessor determines the elements of a column vector Z defined by the pulse amplitudes and arrival times, and the elements of a matrix M defined by the arrival times. A column vector X corresponding to M.sup.-1.Z is calculated, the elements of which are trignometric functions of .phi.15 and .phi.135, from which those phase shift angles are determined. The TACAN bearing angle is then evaluated from the phase shift angles without requiring circuits to phase lock them with respect to each other.
    Type: Grant
    Filed: October 6, 1983
    Date of Patent: January 13, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Serge Hethuin, Guy F. M. Marin
  • Patent number: 4631546
    Abstract: An antenna of the type having a central driven element and a plurality of surrounding parasitic elements is shown. Further, there is circuitry for modifying the basic omnidirectional pattern of said antenna to a directional pattern by normally capacitively coupling the parasitic elements to ground but on a selective basis changing some of the parasitic elements to be inductively coupled to ground whereby they act as reflectors and provide an eccentric signal radiation pattern. By cyclically altering the connection of various parasitic elements in their coupling to ground, a rotating directional signal is produced.
    Type: Grant
    Filed: January 14, 1985
    Date of Patent: December 23, 1986
    Assignee: Rockwell International Corporation
    Inventors: Ted A. Dumas, Les V. Griffee