Doppler Patents (Class 342/405)
  • Patent number: 10367262
    Abstract: An antenna system comprises: multiple antenna elements; and multiple beam forming networks configured to produce radiation patterns for both receiving and transmission functions configured to be optimized by re-positioning said antenna elements, wherein said beam forming networks comprise a receiving beam forming network configured to combine multiple first inputs from said antenna elements into at least a first output, and a transmission beam forming network configured to divide a second input into multiple second outputs to said antenna elements.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: July 30, 2019
    Assignee: SPATIAL DIGITAL SYSTEMS, INC.
    Inventors: Donald C. D. Chang, Tzer-Hso Lin, Eric Hu
  • Patent number: 9100096
    Abstract: A method is provided for reducing near-field radiation and specific absorption rate (SAR) values in a communications device. The communications device includes a multimode antenna structure transmitting and receiving electromagnetic signals and circuitry for processing signals communicated to and from the antenna structure.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: August 4, 2015
    Assignee: SKYCROSS, INC.
    Inventors: Mark T Montgomery, Frank M Caimi, Paul A Tornatta, Jr., Mark W Kishler, Li Chen
  • Patent number: 8050719
    Abstract: Disclosed are a mobile station unit which can obtain azimuth information with a simple construction and a radio communication system including the mobile terminal unit. According to the present invention, in a terminal station, an arrival direction obtaining section 203 obtains an arrival direction of a received azimuth designation signal from a reference station or another terminal station using an arithmetic operation or the like. A transmitting direction forming section 204 determines the direction opposite to the arrival direction obtained by the arrival direction obtaining section 203 as a transmitting direction. A reference azimuth detecting section 207 detects the transmitting direction determined by the transmitting direction forming section 204 as a reference azimuth. An azimuth designation signal generating section 205 generates an azimuth designation signal so as to radiate radio waves having directivity in the transmitting direction determined by the transmitting direction forming section 204.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: November 1, 2011
    Assignee: Panasonic Corporation
    Inventors: Jun Hirano, Takashi Aramaki, Gen-Ichirou Ohta
  • Patent number: 8050691
    Abstract: The present invention relates to a method and an arrangement in a mobile telecommunication network for detection of a UE transmitted signal. The arrangement comprises means for detecting the signal during the time ttot, wherein said means comprises a correlator adapted for combined coherent and non-coherent correlation, wherein the length of the coherent correlation interval is L signal samples, the number of coherent correlation intervals is M and the coherent correlation results in a coherent correlation result for each of the coherent detection intervals M, and means for adding the coherent correlation results non-coherently. Further, the arrangement comprises means for selecting one of the length L of coherent detection interval and the total detection interval ttot based on at least one of the parameters cell size, UE speed and acceleration, number of participating Location Measurements Units and a desired total false alarm rate.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: November 1, 2011
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Ari Kangas
  • Patent number: 8031118
    Abstract: A phase correction apparatus comprising a storing means configured to store a phase correction value associated with each of a plurality of transmission antennas in which the phase correction value is calculated according to an electrical length of a signal path extending from a signal generator generating a transmission signal to the transmission antenna, and correction means configured to correct a phase of the transmission signal to be supplied from the signal generator to each transmission antenna according to the phase correction value for the transmission antenna stored in the storing means.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: October 4, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yasushi Tominaga
  • Patent number: 7952520
    Abstract: A monitor antenna receives radio waves transmitted from a Doppler very high frequency omnidirectional radio range (DVOR) device and includes a carrier signal and a subcarrier signal, orthogonal detectors shift a phase of a signal of each subcarrier component by a phase difference equivalent to a prescribed distance away from the DVOR apparatus relative to a signal of a carrier component, and a combiner combines signals of the carrier component and the subcarrier component to output the combined signal to a DVOR demodulator.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: May 31, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hiroki Kihara
  • Patent number: 7786924
    Abstract: According to one embodiment, a DVOR apparatus includes a main device outputting a radio frequency (RF) signal, a distributor distributing the RF signal output from a main device into a plurality of systems, and sideband antennas radiating the RF signal, wherein, the main device includes a RF signal output unit outputting the RF signal, a measuring unit measuring power levels of reflected waves, a determining unit determining presence or absence of faulty power levels from the measurement results, a generating unit generating selection signals to control selections of outputs of the RF signal for the distributor, a comparison unit comparing the selection signals with the determining results, and a specifying unit specifying faulty sideband antennas and a faulty transmission path of the RF signal among the main device and the distributor from the comparison results.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: August 31, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yasushi Tominaga
  • Patent number: 7768963
    Abstract: Systems and methods of improving sampling of WLAN packet information to improve estimates of Doppler frequency of a WLAN positioning device. A device estimates the position of itself. The device includes a WLAN radio module for receiving WLAN signals transmitted by WLAN APs in range of said device, extraction logic for extracting information from said received WLAN signals to identify the WLAN APs, and logic to cooperate with a WLAN-based positioning system to estimate the position of the device based at least in part on the extracted information identifying the WLAN APs in the range of said device. The WLAN radio module includes logic for measuring multiple received signal strength indicator (RSSI) values for sufficiently long WLAN packets to increase the sampled rate of RSSI of WLAN packets from WLAN APs and to thereby improve an estimate of the Doppler frequency of said device.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: August 3, 2010
    Assignee: Skyhook Wireless, Inc.
    Inventor: Farshid Alizadeh-Shabdiz
  • Patent number: 7630738
    Abstract: Disclosed are a mobile station unit which can obtain azimuth information with a simple construction and a radio communication system including the mobile terminal unit. According to the present invention, in a terminal station, an arrival direction obtaining section 203 obtains an arrival direction of a received azimuth designation signal from a reference station or another terminal station using an arithmetic operation or the like. A transmitting direction forming section 204 determines the direction opposite to the arrival direction obtained by the arrival direction obtaining section 203 as a transmitting direction. A reference azimuth detecting section 207 detects the transmitting direction determined by the transmitting direction forming section 204 as a reference azimuth. An azimuth designation signal generating section 205 generates an azimuth designation signal so as to radiate radio waves having directivity in the transmitting direction determined by the transmitting direction forming section 204.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: December 8, 2009
    Assignee: Panasonic Corporation
    Inventors: Jun Hirano, Takashi Aramaki, Gen-Ichirou Ohta
  • Patent number: 7489274
    Abstract: A system and method for generating signals for testing a Very High Frequency Omnidirectional Range (VOR) receiver is described. The system includes a waveform generator and a signal generator. The waveform generator generates a waveform representing a waveform generated by a VOR ground station during operation of a VOR system. The signal generator receives the waveform from the waveform generator and generates a signal for testing the VOR receiver.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: February 10, 2009
    Assignee: Honeywell International Inc.
    Inventor: Robert S. Doyle
  • Patent number: 7302267
    Abstract: A Base Station (BS) apparatus for estimating a velocity of a Mobile Station (MS) in a mobile communication system includes a channel estimator for performing channel estimation according to a velocity band, receiving a wireless channel signal from the MS, and performing channel estimation using channel estimation coefficients optimized for individual velocity bands; and a velocity estimator for dividing the velocity band into a plurality of sub-Doppler bands, detecting a sub-Doppler band including a frequency index having a maximum frequency response from among the divided sub-Doppler bands, and transmitting information of the detected sub-Doppler band to the channel estimator such that a channel estimation coefficient corresponding to the information is transmitted.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: November 27, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-Ha Lee, Sung-Kwon Jo
  • Patent number: 6996420
    Abstract: Disclosed are a mobile station unit which can obtain azimuth information with a simple construction and a radio communication system including the mobile terminal unit. According to the present invention, in a terminal station, an arrival direction obtaining section 203 obtains an arrival direction of a received azimuth designation signal from a reference station or another terminal station using an arithmetic operation or the like. A transmitting direction forming section 204 determines the direction opposite to the arrival direction obtained by the arrival direction obtaining section 203 as a transmitting direction. A reference azimuth detecting section 207 detects the transmitting direction determined by the transmitting direction forming section 204 as a reference azimuth. An azimuth designation signal generating section 205 generates an azimuth designation signal so as to radiate radio waves having directivity in the transmitting direction determined by the transmitting direction forming section 204.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: February 7, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Jun Hirano, Takashi Aramaki, Gen-Ichirou Ohta
  • Patent number: 5878330
    Abstract: An automatic frequency control system for use in satellite communications is provided that is pre-programmed with an initial acquisition Doppler offset frequency. The system includes a search mode for accurately determining the satellite's initial frequency translation error before the initiation of data transmission and also for determining the Doppler rate of change. The system further includes a tracking mode, in which the frequency variation is continuously monitored. Depending on the frequency characteristics of the transmission, the system is capable of re-entering the search mode to determine a new frequency translation error, if necessary.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: March 2, 1999
    Assignee: WorldComm Systems, Inc.
    Inventor: Gerhard Naumann
  • Patent number: 5684534
    Abstract: A video processor system has separate and independent video processors for performing a variety of video processor functions required for encoding and decoding video signals. Each of the separate video processors performs its own individual set of video processor functions. During the encode process the first video processor performs motion estimation to provide motion estimation information which it applies to the second video processor. The second video processor receives the motion estimation information and performs forward and inverse discrete cosine transforms, quantization and dequantization, frame addition and frame differencing, as well as run length encoding. The run length encoding operation produces run/value pairs which are then applied to the first video processor. The first video processor performs variable length encoding upon the run/value pairs.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: November 4, 1997
    Assignee: Intel Corporation
    Inventors: Kevin Harney, Mike S. Kelly, Gary Loeser
  • Patent number: 5635941
    Abstract: A feeding method and device, particularly for a Doppler VOR system, and to a Doppler VOR system using such a feeding device. The feeding method performs a blending function, which is an approximation of the sinX/X function limitedly to the three central lobes, and is obtained by amplitude overmodulation of a single signal according to a periodic function. The blending function can be controlled through the control of the periodic function.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: June 3, 1997
    Assignee: Alcatel N.V.
    Inventor: Giuseppe Bertocchi
  • Patent number: 4920348
    Abstract: The disclosure relates to methods and apparatus for separating radio signals arriving from different directions and for multiplexing signals intended for receivers dispersed in different directions. The methods and apparatus employ a plurality of antennas with spacing and individual feedline characteristics designed so that a modulation is imparted to each of a plurality of incident signals, for receiving antennas, and radiated signals for transmitting antennas, the modulation level of each signal being determined by the direction of propagation of the signal and by the spacing between antenna pairs. Accordingly, the orientation of lines connecting pairs of antennas as well as the spacing between antennas are set to inhibit the modulation in a particular direction, or to strip a particular modulation off a signal incident from a selected direction.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: April 24, 1990
    Inventor: Elie J. Baghdady
  • Patent number: 4644358
    Abstract: An apparatus to confirm an orientation of the stem of ship by making use of a satellite included in the Global Positioning System. Radio wave signals from the satellite are received by a directional or omnidirectional antenna and the phase difference between a rotating period of said antenna and either the period of distance fluctuation, Doppler fluctuation, phase fluctuation or amplitude fluctuation is detected to obtain an orientation of the satellite which is used to obtain an accurate orientation of the stem relative to a reference direction such as due North.
    Type: Grant
    Filed: June 23, 1983
    Date of Patent: February 17, 1987
    Assignee: Nihon Musen Kabushiki Kaisha
    Inventor: Chogo Sekine