| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 342042000 | RADAR TRANSPONDER SYSTEM | 55 |
| 20090121914 | Active Device for the Reception and the Emission of Electromagnetic Waves - An active device includes a receiving antenna ( | 05-14-2009 |
| 20090273504 | RADAR TARGET PROCESSING REDUCTION SYSTEMS AND METHODS USING COOPERATIVE SURVEILLANCE SOURCES - Systems and methods for reducing radar target processing. The systems include a processor configured to receive a first input from a cooperative surveillance source and a second input from a radar device. The first input includes cooperative target information, the second input includes cooperative and non-cooperative target information, and the processor is configured to process the first and second inputs to remove cooperative target information from the second input based on the first input to generate a modified radar output for use by an output device. The methods include receiving a first input including cooperative target information from a cooperative surveillance source, receiving a second input including cooperative and non-cooperative target information from a radar device, processing the first and second inputs to remove cooperative target information from the second input based on the first input, and generating a modified radar output based on the processed first and second inputs. | 11-05-2009 |
| 20100001896 | System and method for positioning a transponder - There is provided a method and system for positioning a transponder, the system comprising an antenna array of at least two spaced-apart antennas coupled to a common generating and switching unit. The generating and switching unit is configured for generating a periodic signal and switching the signal between said at least two antennas, constituting a positioning signal transmitted to the transponder. The system comprises a receiver for receiving a returned signal and a phase difference estimator coupled to the receiver and operable to measure phase differences between portions of the returned signal. The system further comprises a positioning utility coupled to said phase difference estimator and configured to determine the position of the transponder relative to the positioning system. | 01-07-2010 |
| 20100245153 | ACTIVE TRANSPONDER WITH VERY LOW ELECTRIC POWER CONSUMPTION IN STANDBY MODE - The active transponder includes an input amplifier ( | 09-30-2010 |
| 20100309039 | IDENTIFICATION FRIEND OR FOE (IFF) SYSTEM - A method and apparatus for reducing transponder responses to reflected signals utilizes data in an interrogator message to confirm that if two interrogations are received within a predetermined period of time and if the two interrogator signals correspond to a side lobe followed by a reflected main beam signal, the presence of multipath reflection can be correctly identified and the reply to the main beam interrogation can be suppressed. | 12-09-2010 |
| 20110234445 | ACTIVE TARGET WITH HEIGHT DIVERSITY - An active radar target comprising a plurality of receive antennas and a plurality of transmit antennas arrangeable into pairs of antennas with at least one antenna in a pair being at a different height to at least one antenna in a different pair of antennas. | 09-29-2011 |
| 20110248879 | Method for Determining the Presence of a Transmitter and a Receiver in a Vehicle and a System Designed for Carrying Out the Same - A method for determining the presence of a transmitter and a receiver in a vehicle by means of a central processing unit, wherein said transmitter and receiver are designed for transmitting electromagnetic or optical signals in a predetermined direction and for receiving said signals from substantially the same predetermined direction, respectively, for example for communicating between different vehicles, and wherein said transmitter and receiver are operatively connected to the central processing unit, comprising the steps of:
| 10-13-2011 |
| 20110273322 | TECHNIQUES FOR REPORTING ON OR TRACKING GROUND VEHICLES - Ground vehicle reporting and tracking techniques are provided to track vehicles associated with a particular area (e.g., an airport, a military base, etc.). Ground vehicles may regularly report information about the vehicle to one or more control stations via corresponding communication links. The communication links may include, for example, an Automatic Dependent Surveillance-Broadcast (ADS-B) link and a non-ADS-B link. | 11-10-2011 |
| 20110304497 | Athletic Performance Monitoring Systems and Methods in a Team Sports Environment - Systems, apparatuses, and methods estimate the distance between a player and a ball by transmitting a chirp (sweep signal) to a radio tag located on the ball. During the chirp, the frequency of the transmitted signal is changed in a predetermined fashion. The radio tag doubles the transmitted frequency and returns the processed signal to a transceiver typically located on the player. The currently transmitted frequency is then compared with the received frequency to obtain a difference frequency from which an apparatus may estimate the distance. The apparatus may simultaneously receive the processed signal from the radio tag while transmitting the sweep signal. | 12-15-2011 |
| 20120262329 | Athletic Performance Monitoring Systems and Methods in a Team Sports Environment - Systems, apparatuses, and methods estimate the distance between a player and a ball by transmitting a chirp (sweep signal) to a radio tag located on the ball. During the chirp, the frequency of the transmitted signal is changed in a predetermined fashion. The radio tag doubles the transmitted frequency and returns the processed signal to a transceiver typically located on the player. The currently transmitted frequency is then compared with the received frequency to obtain a difference frequency from which an apparatus may estimate the distance. The apparatus may simultaneously receive the processed signal from the radio tag while transmitting the sweep signal. | 10-18-2012 |
| 20120268308 | Systems and Methods to Use Radar in RFID Systems - Systems and methods to use radar systems for radio frequency identification (RFID) applications. In one embodiment, radar systems are adapted to use RFID communications protocols and methods to enhance the usefulness of radar systems beyond the determination of the presence, distance, direction and/or speed of a vehicle or object, to additionally include the transmission of data such as object identification and additional messages or data. | 10-25-2012 |
| 20130162460 | HIGH-ACCURACY DETECTION IN COLLABORATIVE TRACKING SYSTEMS - An electronic device for wirelessly tracking the position of a second electronic device is disclosed. The electronic device includes transceiver circuitry and processing circuitry. The transceiver circuitry includes a beacon generator to generate a beacon at a particular frequency and direction. An antenna array transmits the beacon, and receives at least one modulated reflected beacon from the second electronic device. The transceiver circuitry also includes a discriminator to discriminate between received modulated reflected beacons and received reflected interfering beacons. The processing circuitry couples to the transceiver circuitry and tracks the position of the second device based on the modulated reflected beacons. | 06-27-2013 |
| 20130265188 | RADAR DEVICE, RADAR POSITIONING SYSTEM, RADAR POSITIONING METHOD, AND COMPUTER READABLE MEDIA STORING RADAR POSITIONING PROGRAM - A radar device is provided. The radar device is installed in a movable body, transmits electromagnetic waves at a predetermined frequency, and receives response waves transmitted from a transponder device in response to the electromagnetic waves, respectively. The radar device includes a representative distance calculating module for calculating a representative distance from the radar device to the transponder device based on the response waves that are continuous over a predetermined azimuth angle range, a representative relative azimuth calculating module for calculating a representative relative azimuth of the transponder device from the radar device based on the continuous response waves, and a positioning module for calculating a location of the radar device based on positional information of the transponder device that is contained in each of the response waves, the calculated representative distance, and the calculated representative relative azimuth. | 10-10-2013 |
| 342043000 | Combined with primary radar system | 4 |
| 20110234446 | APPARATUS FOR MEASURING THE RELATIVE DIRECTION OF A RADIO SIGNAL - An apparatus for measuring the relative direction of an incoming radio signal, the apparatus comprising at least first and second antennas, and comparison means for comparing the incoming radio signal as received at the first antenna with the incoming radio signal as received at the second antenna, and from the result of the comparison transmitting a measurement of the relative direction. | 09-29-2011 |
| 20150054675 | METHODS AND SYSTEMS FOR DETERMINING A RANGE RATE FOR A BACKSCATTER TRANSPONDER - Methods for determining a range rate of a backscatter transponder and readers implementing the methods are described. The reader transmits a continuous wave signal and receives a modulated reflected response signal from the transponder, mixes the modulated reflected response signal with the carrier frequency to produce a downconverted signal, bandpass filters the downconverted signal to pass a bandpass filtered signal containing at least the modulation frequency, applies a non-linear amplitude transfer function to produce a modulation-suppressed signal, and measures the frequency of the modulation-suppressed signal and determines the range rate from the measured frequency. | 02-26-2015 |
| 20160033630 | SECONDARY SURVEILLANCE RADAR SIGNALS AS PRIMARY SURVEILLANCE RADAR - Systems and methods relating to the use of one type of radar technology to accomplish the function of another type of radar technology. Secondary Surveillance Radar/Identification Friend or Foe (SSR/IFF) technology can be used as if it was Primary Surveillance Radar (PSR) to gain the advantages of both systems. Radar signals useful for SSR/IFF are used as PSR signals. Reflections of the SSR/IFF signal off of both airborne and ground based aircraft, and ground based vehicles and items are used to locate and identify these aircraft, vehicles and items. For SSR/IFF transponder equipped aircraft, the reflected SSR/IFF signals provide (prove dial) dual confirmation of the aircraft's presence while for non-transponder equipped aircraft, the reflected signals provide an indication of the aircraft's presence. The use of SSR/IFF signals reflected off of ground based vehicles and items provides an indication of ground based vehicles and items present around the installation receiving the reflected SSR/IFF signals. | 02-04-2016 |
| 20160178740 | SYSTEMS, METHODS, AND APPARATUS FOR LIVING OBJECT PROTECTION HAVING EXTENDED FUNCTIONALITY IN WIRELESS POWER TRANSFER APPLICATIONS | 06-23-2016 |
| 342044000 | Unique identity | 3 |
| 20110234447 | ACTIVE TARGET - An active radar target comprising: a receive antenna for receiving a radar signal, an amplifier for amplifying the signal, and a transmit antenna for retransmitting the amplified signal, characterised in that the active radar target further includes a memory for storing an identity code or means for receiving an identity code, a modulator for receiving the identity code and modulating the radar signal with at least the identity code prior to retransmission of the amplified signal, and wherein the modulator is a single sideband modulator. | 09-29-2011 |
| 20120326916 | Location of a Transponder Center Point - In a radio location system for vehicles moving along a guideway, a transmitter for energizes a transponder beside the guideway. A first detector for detects a response signal from the energized transponder to determine the transponder identification. A second detector detects a positional signal received from the transponder that is decoupled from the first signal and contains precise positional information. In one embodiment, the second detector picks up a crossover signal from a crossover antenna. | 12-27-2012 |
| 20130314269 | SYSTEM FOR DETERMINING THE PRESENCE OF AN IDENTIFIER INSIDE A PASSENGER COMPARTMENT - A system for determining the presence of an identifier ( | 11-28-2013 |
| 342045000 | IFF or SIF | 11 |
| 20090045996 | Combined IR-RF combat identification friend-or-foe (IFF) system for the dismounted soldier - Combined IR-RF combat identification friend-or-foe (IFF) system for the dismounted soldier comprising IR-RF interrogator mounted on a small arms and IR-RF transponder mounted on a friendly target, wherein sharp-diagram K-band RF channel provides brief information about friendly targets that could be in attacked area, and if they are, develop alert signal: “Friendly soldiers are in the area”. IR channel of the system prevents friendly fire in the case of direct sighting to a friendly soldier. | 02-19-2009 |
| 20090058712 | Secure covert combat identification friend-or-foe (IFF) system for the dismounted soldier - A combat IFF system, for use in a combat exercise or on the battlefield, including a helmet-mounted passive IFF response unit and a weapon-mounted IFF interrogatory unit for each soldier. Infrared (IR) signals are employed for both challenge and response. The IR response signal is a very narrowly-targeted reflection of the relatively narrow IR transmit signal, thereby minimizing interception opportunities. The transmit and response signals are encoded in a transaction that cannot be compromised even when either or both signals are intercepted and decoded by the enemy. The combat IFF system includes biometric anti-spoofing features that prevent any use by an enemy in possession of captured units. Military radio-frequency (RF) spectrum is not required so there are no bandwidth limitations on simultaneous IFF transactions in the battlefield. A combat IFF transaction is completed in milliseconds. | 03-05-2009 |
| 20090079616 | Covert long range positive friendly identification system - The present invention pertains to a portable repeater device for use by friendly forces in a combat theater. The repeater device includes a sensor that receives an interrogator signal, coded or un-coded, from a friendly interrogator, such as an airborne attack or search and rescue vehicle, and a transmitter that transmits a coded or uncoded beacon at a covert wavelength outside the typical night-vision spectrum back to the interrogator in response. Because the transmission wavelength of the repeater signal is covert and outside typical night-vision capabilities, the system limits the ability of enemy forces to locate friendly forces employing such signaling beacons through typical night-vision equipment. | 03-26-2009 |
| 20100289691 | Simplifying and cost-effective IR-RF combat identification friend-or foe (IFF) system for ground targets - Combined IR-RF combat identification friend-or-foe (IFF) system for a ground targets, such as dismounted soldiers, vehicles or military platforms comprising IR-RF interrogator mounted on a firearm and IR-RF transponder mounted on a friendly target. RF channel operates in Ka-band providing brief information about friendly targets that could be in attacked area, and if they are, develop alert signal: “Friendly soldiers are in the area”. The interrogator additionally contains RF channel receiving reflected signal that allows recognize armed foe. IR channel of the system prevents friendly fire in the case of direct sighting to a friendly soldier. | 11-18-2010 |
| 20110102236 | APPARATUS FOR SHARING AN OMNIDIRECTIONAL ANTENNA BETWEEN AN IFF TRANSPONDER AND AN IFF INTERROGATOR - An apparatus for transmitting and receiving radio-frequency signals. including a cylindrical antenna array which has an omnidirectional channel; an IFF interrogator and an IFF transponder connected to the cylindrical antenna array; and a means for sharing the omnidirectional channel between the IFF interrogator and the IFF transponder. | 05-05-2011 |
| 20110279302 | METHOD FOR OPTIMIZING THE MANAGEMENT OF RADAR TIME FOR SECONDARY RADARS OPERATING IN MODES - A method for the real-time management and sequencing of the information interchanges between a secondary radar and a plurality of aircraft includes the interchanges between the radar and a given aircraft being performed, depending on the aircraft concerned, either in a non-selective, SSR, IFF or “All Call” interrogation mode or in a selective “Roll Call” interrogation mode. According to this method, the information interchanges according to the non-selective interrogation modes are performed during successive periods specifically allocated to these modes, whereas each transaction forming an information interchange in selective mode between the radar and a given aircraft is temporally inserted into the time slots not used in periods by the interrogation-response tasks in non-selective mode. The method applies equally to the secondary radars exclusively dedicated to civilian air traffic control and to the secondary radars dedicated to combined civilian and military aircraft control tasks. | 11-17-2011 |
| 20110309965 | Method for Transmission of a Geographic Coordinate - A method for transmission to a receiver of a geographic coordinate λ of a transmitter positioned in a spherical coordinate system λ, φ, at least a portion of one hemisphere of the Earth's sphere being divided into N sections each bounded by a minimum φ and a maximum φ, each section being subdivided into X cells each bounded by a minimum λ and a maximum λ, X varying depending on the section, includes at least the following steps: partitioning all of the latitude sections into M+1 classes, M sections being interspersed between two sections of the same class; transmitting, in one and the same message, the coordinate λ of the transmitter referenced relative to the cell in which the transmitter is located and the class of the latitude section in which the transmitter is located, the range of the receiver being at the most equal to the width of a cell along the axis of variation of the coordinate λ. | 12-22-2011 |
| 20110309966 | METHOD AND SYSTEM FOR LOCATING A TARGET IN AN INTERROGATION-RESPONSE SYSTEM (IFF) - A method and system for locating a target, of azimuth A | 12-22-2011 |
| 20130207831 | SYSTEM AND METHOD FOR MONITORING OBJECTS, PEOPLE, ANIMALS OR PLACES - An improved system and method for monitoring objects, people, animals, or places uses a passive Modulating Reflector (MR) tag where a characteristic of an antenna is modified according to a time-varying pattern by a modulating network thereby causing the reflective characteristics of the antenna to vary in accordance with the time-varying pattern. When an interrogator transmits an RF waveform that impinges on the antenna, the return signal reflecting off the antenna is modulated in accordance with the time-varying pattern allowing a remote receiver to demodulate information from the modulated return signal. The antenna is embedded in a dielectric material. The MR tag can be used with a wide variety of tag-interrogator configurations employing monostatic and/or bistatic radar techniques to allow monitoring, locating, and/or tracking of objects, people, animals, or place with which MR tags are associated. | 08-15-2013 |
| 20140085125 | Multi-transceiver RF alert system for preventing hunting accidents - The RF system for preventing hunting accidents comprising RF interrogator mounted on the firearm or hunter's hat and RF transponder attached to hunter's hat, wherein directional pattern of antennas of the hat-mounted interrogator is directed along the line of view of the hunter so matching with sightline of hunter's rifle; and RF transponder, which, to cover directional pattern of | 03-27-2014 |
| 20140240165 | MULTIMODE DEVICE FOR LOCATING AND IDENTIFYING ITEMS - An integrated identification system including a housing, an active light beacon supported by the housing, an RF beacon supported by the housing, and a controller coupled to the active light beacon and RF beacon to facilitate independent control of the active light beacon and RF beacon. | 08-28-2014 |
| 342046000 | Navigational | 15 |
| 20080231495 | MULTIPURPOSE PERIPHERAL DEVICE FOR RECEIVING SIGNALS - A multipurpose peripheral device is operated with a portable electronic device. The portable electronic device includes a bus connection port. The multipurpose peripheral device includes a circuit carrier, at least two types of wireless signal-receiving/processing modules and a bus bridge module. The wireless signal-receiving/processing modules are disposed on the circuit carrier for receiving and processing corresponding wireless signals, thereby generating first signals and second signals. The bus bridge module is disposed on the circuit carrier and electrically connected to the wireless signal-receiving/processing modules and can be coupled to the bus connection port. The first signals and the second signals are transmitted from the wireless signal-receiving/processing modules to the portable electronic device through the bus bridge module and the bus connection port. | 09-25-2008 |
| 342047000 | Distance measuring equipment (DME) | 14 |
| 20080204303 | PULSE SIGNAL TRANSMITTING APPARATUS, METHOD OF ADJUSTING WAVEFORM OF THE SAME, AND DME GROUND STATION APPARATUS - A transmitting apparatus comprises a generator for generating a pulse signal having a waveform approximated to the Gaussian error function at a prescribed timing, a transmitter for power-amplifying a pulse signal generated by the generator, and transmitting the amplified pulse signal, an evaluator for extracting a pulse waveform part from the power-amplified pulse signal, comparing the extracted pulse waveform part with an ideal waveform so as to obtain an error amount between the pulse waveform part and the ideal waveform, and evaluating whether or not the error amount is within a prescribed error range, and a controller for causing the generator to subject the waveform of the pulse signal to correction in such a manner that the error amount becomes smaller each time an evaluation result of the evaluator is that the error amount is out of the prescribed error range. | 08-28-2008 |
| 20080238759 | INTEGRATED DISTANCE MEASURING EQUIPMENT AND TRANSPONDER SYSTEM AND METHOD - A combined transponder and DME system for use in an aircraft. An L Band transmitter is shared between transponder and DME. | 10-02-2008 |
| 20080252511 | Method for Automatically Selecting Radionavigation Beacons - The field of the invention is that of navigation systems serving aboard an aircraft, to determine the position of the aircraft on the basis of measurements of distance separating the aircraft from radionavigation beacons delivered by equipment of the DME type (Distance Measuring Equipment). It relates to a method for selecting radionavigation beacons using an onboard navigation system aboard an aircraft from a list of eligible beacons at an instant t | 10-16-2008 |
| 20080297399 | DME GROUND APPARATUS - The transponder unit provided in a DME ground apparatus detects the transmission rate at which to transmit the pulse-pairs constituting a response signal. The threshold of the reception level of the pulse detection unit provided in the transponder unit is raised as the transmission rate increases. | 12-04-2008 |
| 20090033541 | DME GROUND APPARATUS - A transponder unit of a DME ground apparatus receives an interrogation signal and converts the same to an IF signal. The unit performs analog-to-digital conversion on the IF signal, generating a digital interrogation signal. The unit calculates two detected outputs whose frequencies are ±900 kHz deviated with respect to the center frequency of the digital interrogation signal. Then, the transponder unit compares the two detected outputs and the digital interrogation signal in terms of magnitude, thereby to determine whether a response signal should be transmitted. | 02-05-2009 |
| 20090309780 | METHOD FOR DISTANCE MEASUREMENT AND DATA TRANSMISSION IN A CONTINUOUS WAVE RADAR SYSTEM - A method for distance measurement and data transmission in a continuous wave radar system is described. A continuous wave radar system has a transmit and receive module and at least one transponder device, a mobile control and monitoring device and an HMI system. Transponder devices are searched for with the aid of an unmodulated continuous wave signal as an interrogation signal, such that the transponder device can send a radio response signal to the transmit and receive module in response to the interrogation signal, as a result of which a data transmission takes place from the transponder device to the transmit and receive module. Upon completion of the data transmission a frequency-modulated continuous wave signal is generated in order to measure, on the basis thereof, a distance between the transponder device and the transmit and receive module. | 12-17-2009 |
| 20100231435 | Distance Measuring System - [Object] To achieve high-precision distance measuring with a reduced error in a distance measuring system which calculates a distance from an arrival time of each pulse signal constituting a pulse sequence. | 09-16-2010 |
| 20100315283 | PULSE DETECTING EQUIPMENT - A pulse detecting equipment includes a log compression processor ( | 12-16-2010 |
| 20100328139 | DISTANCE MEASURING EQUIPMENT AND DISTANCE MEASURING EQUIPMENT MONITOR SYSTEM - A transponder ( | 12-30-2010 |
| 20120146834 | REDUCED COMPUTATION COMMUNICATION TECHNIQUES FOR LOCATION SYSTEMS - Techniques are generally disclosed for communications between a locator device and a transponder device. The locator device may be located in a space based location such as on a surface of a remote celestial body, on a space craft or space station, on a satellite, or on a low earth orbit aircraft. The locator can encode an interrogation signal for receipt by one or more distant transponders. The transponder devices can receive the communications from the distant locator device and determine frequency, phase, cadence, and Doppler for encoding a reply transmission to the locator device. The encoding process estimates Doppler shift and adapts the reply transmission for a quantized reverse Doppler shifted frequency and cadence, which effectively pre-compensates for the Doppler shift that will be apparent to the locator due to the relative velocity. The locator can use the Doppler quantization scheme to reconstruct the actual relative velocity. | 06-14-2012 |
| 20140015707 | SYSTEMS AND METHODS FOR PROVIDING DIVERSITY-DISTANCE-MEASURING EQUIPMENT - Systems and methods that allow for distance-measuring equipment (DME) to use either a lower or an upper fuselage-mounted antenna. An exemplary system located on an aircraft includes an aircraft configuration data source that generates aircraft configuration information, an aircraft orientation data source that generates aircraft orientation information, a positioning system that generates aircraft position information and a component that provides DME ground station position information. The system also includes a first antenna, a second antenna and a processing device that determines if a DME signal communication issue exists with the first antenna that is based on the generated aircraft position information, the DME ground station position information and at least one of the configuration or orientation information. The processing device switches DME signal communication to the second antenna if a DME signal communication issue has been determined to exist. | 01-16-2014 |
| 20150077283 | MEASURING JIB LENGTH OF A CRANE - Method for determining the overall length (GL) of a jib ( | 03-19-2015 |
| 20150102953 | SYSTEMS AND METHODS FOR REMOTE L-BAND SMART ANTENNA DISTANCE MEASURING EQUIPMENT DIVERSITY - Various avionics systems may benefit from the proper handling of diversity with respect to antennas. For example, systems and methods for remote L-band smart antenna distance measuring equipment may benefit from being prepared to provide diversity against interference, such as a multipath interference. A method can include determining which antenna of a plurality of antennas of an aircraft is preferred for communication with respect to distance measuring equipment. The method can also include selecting the antenna based on the determination. | 04-16-2015 |
| 20150145713 | RETRO-REFLECTIVE RADAR PATCH ANTENNA TARGET FOR ARTICULATED VEHICLE TRAILER SENSING - A vehicle detection system for determining the position of a trailing section relative to a forward section of a vehicle, such as a tractor-trailer combination. The trailing section is pivotally coupled to the forward section for driving movement therewith. The vehicle detection system includes a central controller and a detection system connectable to the forward section of the vehicle and operably coupled to the central controller. The detection system outputs a detection signal. A target device is connectable to the trailing section and configured to receive the detection signal from the detection system and output a unique return signal to the detection system. The detection system receives the return signal and transfers the return signal or other indicative signal for processing by the central controller, whereby the central controller determines position information of the trailing section, for potential use by a DSRC. | 05-28-2015 |
| 342051000 | Radar transponder only | 9 |
| 20090174592 | RFID TRANSPONDER WITH PLL - An RFID transponder comprises an antenna for receiving data in a downlink mode and transmitting data in an uplink mode, with a modulation stage for modulating uplink data and a demodulation stage for demodulating downlink data. A class C amplifier is provided, which has a resonant circuit, a plucking device coupled to the resonant circuit, and a controllable pulse width generator coupled to the plucking device. The controllable pulse width generator is adapted to periodically switch the plucking device on and off so as to maintain an oscillation of the resonant circuit. The transponder further comprises a phase locked loop configured to be locked to an oscillating signal received through the antenna and to be switched into a free running mode without being locked to the oscillating signal received through the antenna, thereby being adapted to output an independent internal clock signal for the RFID transponder. | 07-09-2009 |
| 20090174593 | METHOD OF MANUFACTURING TRANSPONDER FOR WIRELESS CARD, METHOD OF MANUFACTURING WIRELESS CARD, WIRELESS CARD TRANSPONDER, AND WIRELESS CARD - A method of manufacturing a transponder for a wireless card includes forming an antenna coil on a film sheet, short-circuiting both end portions of the antenna coil by a short-circuit portion, mounting an LSI on the film sheet, electrically connecting a terminal of the LSI to both ends of the antenna coil, and removing the short-circuit portion after the LSI is mounted. | 07-09-2009 |
| 20090237290 | RADAR TRANSPONDER - A radar transponder which does not have a receiver/transmit switch. A radio frequency coupler of the transponder switches the antenna between the transmitter and the receiver. The coupler connects the receiver, the transmitter and the antenna such that the receiver is connected to the most attenuated terminal of the coupler. The coupler may be a radio frequency coupler having an attenuation of between three and forty dB, or approximately ten dB. The antenna can be an integrated PCB surface-mounted multi-bay turnstile antenna. | 09-24-2009 |
| 20110001655 | DETERMINING PHYSICAL PROPERTIES OF STRUCTURAL MEMBERS IN DYNAMIC MULTI-PATH CLUTTER ENVIRONMENTS - A method for determining a physical property of a structural member in a dynamic multi-path clutter environment is given. The method comprises transmitting an RF interrogation signal to a wireless sensor operable to receive the RF interrogation signal, produce a reference signal and a measurement signal, and transmit the reference signal and the measurement signal in the dynamic multi-path clutter environment. The reference signal is delayed by a first time delay and the measurement signal is delayed by a second time delay that is a function of the physical property to be determined. The first and second time delays are associated by a known relationship defined by the wireless sensor. The method further comprises receiving the transmitted reference signal and the transmitted measurement signal and comparing the transmitted reference signal and the transmitted measurement signal in the time domain. Finally, the method comprises using this comparison to determine the physical property of the structural member. | 01-06-2011 |
| 20120306683 | Method and System for Object Localization - This document describes a method and system for object localization. In accordance with the method an object ( | 12-06-2012 |
| 20130021193 | Signal Transponder - A signal transponder for frequency conversion of signals from unknown signal sources is provided. The transponder includes an input for receiving a signal from an unknown signal source, an input filter for filtering the received signal, an input signal amplifier for amplifying the received signal, a mixer for converting the frequency of the amplified and filtered received signal to a predetermined frequency, a local oscillator for generating a clock signal supplied to the mixer for frequency conversion, an output filter for filtering the frequency converted signal, an output signal amplifier for amplifying the frequency converted signal, and an output for transmitting the filtered and amplified frequency converted signal. | 01-24-2013 |
| 20130181858 | RADAR SYSTEM, TRANSPONDER DEVICE, METHOD FOR RADAR PROCESSING AND COMPUTER READABLE MEDIA - A radar system is provided. The system includes a radar transceiving device equipped in a movable body and for transmitting an electromagnetic wave at a first frequency, and a transponder device arranged in a beacon and for transmitting a response wave upon receiving the electromagnetic wave. The transponder device includes a response wave transmitting module for transmitting, when a radar classification of the radar transceiving device is a solid-state radar, a response wave at a second frequency different from the first frequency in response to receiving the transmitted electromagnetic wave. The radar transceiving device includes a transmitting module for transmitting the electromagnetic wave, a receiving module for receiving a radar echo at the first frequency and the response wave at the second frequency, and a display controlling module for displaying, on a predetermined radar display unit, locations of the beacon and another movable body existing around the movable body. | 07-18-2013 |
| 20150048966 | METHOD AND SYSTEM FOR IDENTIFYING AND FINDING A RANGE OF AN OBJECT - A method for identifying and ranging a wireless device, comprising: transmitting an original radar signal from a detecting system; in response to the original radar signal, receiving a modulated radar signal at the detecting system, the modulated radar signal being backscattered from an antenna of the wireless device and containing information pertaining to the wireless device, and the modulated radar signal being a frequency offset version of the original radar signal; and, using a processor at the detecting system, determining an identity and a range of the wireless device from the modulated radar signal. | 02-19-2015 |
| 20150054676 | METHODS AND SYSTEMS FOR DETERMINING VEHICLE POSITION IN AN AUTOMATIC VEHICLE IDENTIFICATION SYSTEM - Methods of estimating vehicle location in a roadway using an automatic vehicle identification system are described. The methods involve receiving a set of response signals from a vehicle-mounted transponder at points in time and determining a range rate of the transponder relative to the antenna at each point in time; identifying a minima in the magnitude of the range rate; estimating a first position of the transponder at a first time corresponding to the occurrence of the minima; estimating a velocity of the vehicle based upon one or more of the determined range rates; and estimating a second position of the transponder based upon the first position and the velocity. | 02-26-2015 |
