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| Number | Title | Issue Date |
| 8174443 | True time delay systems with array antenna for the spatially changeable radiation pattern for maximum power ultra-wideband pulses An HPEM module (1,10) is provided, wherein the output pulse or the trigger pulse is transmitted on a single input trigger pulse (Trigger 2, 11) with an intermediate TTD network (5, 14) in a phase-defined and time-defined manner independent of fr... | 05/08/2012 |
| 8013792 | Method and apparatus to minimize antenna backside signal response and ambiguity Method and apparatus for minimizing antenna backside signal response and ambiguity in low frequency applications, particularly low frequency synthetic aperture radar (SAR). Various time delay elements are selectably switched into the signal path so as to cause a nul... | 09/06/2011 |
| 7999737 | Beam adjusting device The present invention relates to a device for adjusting the beam direction of an antenna. The device has a source connection terminal to be connected to a signal source and at least two feed connection terminals to be connected to antenna element feed points. A feed... | 08/16/2011 |
| 7898477 | Volumetric direction-finding using a Maxwell Fish-Eye lens Disclosed is an Radio Frequency (RF) volumetric direction finding (DF) methodology, utilizing an Half Maxwell Fish-eye (HMFE) Lens having a semi-spherical shape, a focal plane with a feed structure composed of near-equally spaced frequency-independent antenna elemen... | 03/01/2011 |
| 7889128 | Array antenna apparatus and signal processing method An array antenna apparatus which has an away antenna formed by a plurality of antenna elements, and subjects received signals, which are received by the antenna elements, to weighting using array weights of complex numbers. The array antenna apparatus includes a del... | 02/15/2011 |
| 7868824 | Beamforming apparatus and method A beamforming apparatus obtains the beamforming parameters that realize arbitrary desirable PSF by using optimization theories. The apparatus uses at least one of the beamforming parameters such as the intensities, frequencies, bandwidths and shapes of the signals t... | 01/11/2011 |
| 7864112 | Beam-forming antenna with amplitude-controlled antenna elements A beam-forming antenna for transmission and/or reception of an electromagnetic signal having a given wavelength in a surrounding medium includes a transmission line electromagnetically coupled to an array of individually controllable antenna elements, each of which ... | 01/04/2011 |
| 7864111 | Arrangement for steering radiation lobe of antenna An arrangement for electronically steering a radiation lobe of an antenna. Radiators of the antenna are located in a row and two radiators, which are equidistant from a midpoint of the row, form a radiator pair. To steer the radiation lobe, each pair is associated w... | 01/04/2011 |
| 7737892 | Time delay beamformer and method of time delay beamforming A time delay beamformer comprises input channels, which have associated samplers arranged to sample inputs signal carried upon the input channels. The samplers sample the input channels at a number of points in time to produce a number of sampled signals. An adaptiv... | 06/15/2010 |
| 7728772 | Phased array systems and phased array front-end devices Disclosed herein is a front-end device for a phased array system. The front-end device includes an array of horn antennas, a first set of transmission lines coupled to the horn antenna array for a first polarization, a second set of transmission lines coupled to the... | 06/01/2010 |
| 7659849 | Frequency scanning antenna Embodiments of the invention are concerned with frequency scanning antennas for transceiving radio frequency energy for use in detecting and monitoring ground-based targets. In one arrangement the frequency scanning antenna is embodied as a structure that is ... | 02/09/2010 |
| 7649495 | Wavelength division multiplexing methods and apparatus for constructing photonic beamforming networks Methods and apparatus for constructing phased array antenna beamforming networks are provided, that allow to scan multiple beams and select appropriate sets of delay lines simultaneously. The beamforming networks disclosed herein generate less losses than convention... | 01/19/2010 |
| 7642963 | Soldier/ground vehicle passive ranging system utilizing compact spatiotemporal processor A method of two-source passive ranging comprising the steps of determining the coordinates of a first position and a second position wherein a first soldier or ground vehicle is located at the first position and a second soldier or ground vehicle is located at the s... | 01/05/2010 |
| 7602337 | Antenna array including a phase shifter array controller and algorithm for steering the array An antenna system may include an antenna array which includes a plurality of radiating elements. The system may also include a phase shifter controller and algorithm to apply a non-periodic modulation to an excitation of each radiating element. ... | 10/13/2009 |
| 7595753 | Broadband beam steering antenna An antenna apparatus attachable to the front-end of a transceiver circuitry, includes at least two balanced radiation elements forming a planar structure for transmitting and/or receiving a corresponding number of partial signals. The antenna apparatus also includes... | 09/29/2009 |
| 7456787 | Beam-forming antenna with amplitude-controlled antenna elements A beam-forming antenna for transmission and/or reception of an electromagnetic signal having a given wavelength in a surrounding medium includes a transmission line electromagnetically coupled to an array of individually controllable antenna elements, each of which ... | 11/25/2008 |
| 7423588 | Phased array antenna system The present antenna system includes a phased array antenna system comprising a limiting circuit, an isolation circuit, and a phasing circuit. The limiting circuit includes a system of fast signal diodes coupled with a zener diode, which provides sharp limiting and i... | 09/09/2008 |
| 7420509 | Methods and apparatus for adaptively performing algebraic interference cancellation An adaptive algebraic interference cancellation technique for canceling interference from a signal of interest received by an array of antenna elements involves: generating a set of antenna element signals that reflect reception of the signal of interest and interfe... | 09/02/2008 |
| 7417598 | Compact, low profile electronically scanned antenna A compact, low profile electronically scanned antenna module is provided. The antenna module includes a multi-layer antenna integrated printed wiring board (AiPWB) that includes a radiator layer on a front surface. The radiator layer includes a plurality of RF radia... | 08/26/2008 |
| 7417587 | Ferrite phase shifter and phase array radar system A phase shifter comprises a substrate, a ground plane formed on a first surface of the substrate, a support structure positioned on a second surface of the substrate opposite the first surface, three parallel, non-co-planar microstrip lines supported by the support ... | 08/26/2008 |
| 7415295 | Wireless telephone antenna diversity system and method A system and method are provided for diversifying radiated electromagnetic communications in a wireless communication device having a plurality of embedded antennas. The method comprises sensing conducted electromagnetic transmission line signals communicated by the... | 08/19/2008 |
| 7408507 | Antenna calibration method and system A phased array antenna system includes an RF front end, a radome, and an optical calibrator embedded in the radome for enabling in-situ calibration of the RF front end. The optical calibrator employs an optical timing signal generator (OTSG), a Variable Optical Ampl... | 08/05/2008 |
| 7397425 | Electronically steerable sector antenna An electronically steerable antenna system includes a plurality of panels that are coupled together to form an N-sided polygon. Each panel includes a plurality of microstrip conductor patches forming a phased array antenna. In a first embodiment that includes beam s... | 07/08/2008 |
| 7394424 | Methods and apparatus for implementing a wideband digital beamforming network The present invention concerns methods and apparatus for implementing a true-time-delay wideband digital beamformer. In true-time-delay wideband digital beamformers of the present invention, improved control over beam properties formed by the combination of the beam... | 07/01/2008 |
| 7391381 | Vehicle mounted satellite antenna system with in-motion tracking using beam forming The present invention relates to a vehicle mountable satellite antenna as defined in the claims which is operable while the vehicle is in motion. The satellite antenna of the present invention can be installed on top of (or embedded into) the roof of a vehicle. The ... | 06/24/2008 |
| 7391367 | Optically frequency generated scanned active array A system for scanning an antenna array of the present invention. The system includes a first mechanism for modulating a desired signal on an optical carrier signal. The first mechanism includes a frequency-tunable optical oscillator with a phase shifter for changing... | 06/24/2008 |
| 7382311 | Method, computer program product and system for differentiating physical sources from second order nonlinear signal effects A system for differentiating between a signal from a physical source and a nonlinear signal effect includes an array, a delay control element and a signal processing element. The array is configured to detect a signal at a particular location using an initial time d... | 06/03/2008 |
| 7372893 | Device and method for compensating for phase distortion in base station of OFDMA-based cellular system Disclosed is a device and method for compensating for phase distortions in a base station of an OFDMA-based cellular system. The method comprises receiving OFDM symbols from a plurality of mobile stations, canceling a symbol guard interval using a reference timing s... | 05/13/2008 |
| 7373177 | Data transmission method and arrangement A method for determining weight factors of antenna beams, the method comprising using at least one directional antenna beam implemented with an antenna array to establish a radio link, forming a radio cell with the antenna beam, dividing the radio cell into at least... | 05/13/2008 |
| 7369810 | Satellite transponder architecture with integral redundancy and beam selection capabilities A transponder system that integrates redundancy and beam selection capabilities is disclosed. The transponder system comprises an amplifier network having a plurality of amplifiers; an antenna network, comprising a plurality of antennae; an output switching network,... | 05/06/2008 |
| 7352305 | Method and circuit for interpolating encoder output Two-phase sinusoidal signals QA, QB output from an encoder are interpolated by sample-and-hold (S/H) circuits and A/D conversion (ADC) circuits, and data D is output in accordance with a data request signal RQ from exterior. For this interpolation of encoder output,... | 04/01/2008 |
| 7349439 | Ultra-wideband communication systems and methods Systems and methods of ultra-wideband communication are provided. In one ultra-wideband communication method, a communication channel is divided into a plurality of non-overlapping sub-channels by dividing a single serial message intended for an ultra-wideband commu... | 03/25/2008 |
| 7348932 | Tile sub-array and related circuits and techniques A radiator includes a waveguide having an aperture and a patch antenna disposed in the aperture. In one embodiment, an antenna includes an array of waveguide antenna elements, each element having a cavity, and an array of patch antenna elements including an upper pa... | 03/25/2008 |
| 7342534 | Phased array radio frequency pulse generator A phased array radio frequency pulse generator includes a plurality of radio frequency pulse generator units (4, 4a, 4b, 4c) each having a non-linear dispersive electrical circuit (1) incorporating at least one non-li... | 03/11/2008 |
| 7339955 | TDMA communication method and apparatus using cyclic spreading codes Systems and methods of ultra-wideband communication are provided. In one embodiment, an ultra-wideband communication system divides a stream of data conveying symbols into a plurality of unspread substreams. A common spreading code is generated at the ultra-wideband... | 03/04/2008 |
| 7339714 | Variable blazed grating based signal processing A light processing system includes an array of optical signal processing devices. The array of processing devices are operable to receive at least some of a first signal part and to modulate the first signal part based at least in part on a control signal received f... | 03/04/2008 |
| 7340259 | Robust, efficient, localization system Replica correlation processing, and associated representative signal-data reduction and reconstruction techniques, are used to detect signals of interest and obtain robust measures of received-signal parameters, such as time differences of signal arrival and directi... | 03/04/2008 |
| 7333049 | Waveform ambiguity optimization for bistatic radar operation A radar transmitter is at a first location on a moving platform and illuminates a target with a sequence of frequency modulated radar pulses. The frequency modulated pulses are linear frequency modulated, i.e. chirped. The target reflects the frequency modulated rad... | 02/19/2008 |
| 7324048 | Wavelength division multiplexing methods and apparatus for constructing photonic beamforming networks Methods and apparatus for constructing phased array antenna beamforming networks are provided, that allow to scan multiple beams and select appropriate sets of delay lines simultaneously. The beamforming networks disclosed herein generate less losses than convention... | 01/29/2008 |
| 7317427 | Adaptive array An adaptive antenna array has array elements arranged in element rows and element columns and subarrays arranged in subarray rows and subarray columns, for which the subarray phase centers have non-uniform spacing. The adaptive antenna array provides good detection ... | 01/08/2008 |
