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| Number | Title | Issue Date |
| 8228232 | Active phased array architecture In an exemplary embodiment, a phased array solid-state architecture has dual-polarized feeds and is manufactured, for example, on highly flexible silicon germanium (SiGe). The implementation of dual-polarized feeds facilitates the operation of phased arrays where th... | 07/24/2012 |
| 7551134 | Methods and systems for tracking signals with diverse polarization properties Methods and systems for tracking signals with diverse polarization properties address both sensitivity and antenna tracking performance issues. In one embodiment, complex weightings for matching a polarization of an incident signal on a data channel are determined, ... | 06/23/2009 |
| 7518551 | Methods and systems for tracking signals with diverse polarization properties Methods and systems for tracking signals with diverse polarization properties address both sensitivity and antenna tracking performance issues. In one embodiment, complex weightings for matching a polarization of an incident signal on a data channel are determined, ... | 04/14/2009 |
| 7414582 | Method and apparatus for all-polarization direction finding Embodiments of the present invention provide a method and apparatus for all-polarization direction finding. The method and apparatus generally include acquiring measurements at least partially corresponding to an emitted signal and generated utilizing a blind signal... | 08/19/2008 |
| 7412175 | Interferometric polarization control A signal conditioning module provides a polarimeter capability in a photometric system. The module may include multiple variable delay polarization modulators. Each modulator may include an input port, and a first arm formed to include a first reflector and first ro... | 08/12/2008 |
| 7402794 | Radiometer imaging system and method thereof A radiometer imaging system includes an antenna array having a plurality of sub-arrays, each being formed of a plurality of antenna elements arranged in a sub-Y-type, a receiver array having the same number of receivers as the antenna elements, each receiver being a... | 07/22/2008 |
| 7380455 | System and method for resolving phase ambiguity of a transducer array to determine direction of arrival of received signals System and method for resolving phase ambiguities of various transducer arrays, including non-coplanar interferometer antennas on an aircraft skin, in order to determine the direction of arrival of a signal received by the array and emitted by a source remote from t... | 06/03/2008 |
| 7369082 | Method and apparatus implementing a scan strategy for automatic high power tube recovery A method of reducing power to an electron emitting cathode comprises the steps of sensing a weather condition; calculating a condition number based upon the weather condition; comparing the condition number to a threshold; and reducing the power to the electron emit... | 05/06/2008 |
| 7352833 | Method and system for temporal autocorrelation filtering An autocorrelation filter for use with a spread spectrum receiver. The autocorrelation filter can be used as a prefilter stage to reduce phase distortion present in a spread spectrum signal. The autocorrelation filter can be used to process the output from a lattice... | 04/01/2008 |
| 7340218 | Pulsed signal device characterization employing adaptive nulling and IF gating A receiver channel, test system and method employ adaptive nulling to filter a targeted frequency component from a pulsed signal to produce a filtered pulsed signal. The filtered pulsed signal facilitates measuring pulsed performance parameters of a device under tes... | 03/04/2008 |
| 7330151 | Alignment of an elliptical beam of an antenna A system and methods for aligning an elliptical beam of an antenna to a line-of-sight from the antenna to a remote receiver are disclosed. The methods offset the antenna from an initial pointing direction in an antenna pointing coordinate system. Coordinates of the ... | 02/12/2008 |
| 7315728 | Polarized wave measuring apparatus, and antenna characteristic measuring apparatus and radio wave measuring apparatus using the same A phase shift section phase-shifts the second band-restricted signal to a first phase-shifted signal and a second phase-shifted signal having a phase that is different from the phase of the first phase-shifted signal by 90 degrees. A first signal mixing section mixe... | 01/01/2008 |
| 7295150 | Methods and systems for identifying high-quality phase angle measurements in an interferometric radar system A method for determining a mechanical angle to a radar target utilizing a multiple antenna radar altimeter is described. The method comprises receiving radar return signals at the multiple antennas, populating an ambiguity resolution matrix with the electrical phase... | 11/13/2007 |
| 7280848 | Active array antenna and system for beamforming An active antenna array for use in a beamforming antenna system. The antenna array includes multicarrier power amplifiers coupled to each antenna element wherein the outputs of the multicarrier power amplifiers are linearized. The antenna array communicates with a b... | 10/09/2007 |
| 7272364 | Method and system for minimizing overlap nulling in switched beams A wireless system, which minimizes nulls within the wireless system, while simultaneously providing diversity. A wireless system will now have increased capacity and coverage due to an enhanced signal to interference ratio in the areas of beam overlap. The system us... | 09/18/2007 |
| 7262729 | Radio detection and ranging intrusion detection system A radar system having a processor, a waveform generator, a plurality of antenna interfaces, a set of first antennas configured to transmit a waveform, and a set of second antennas configured to receive a reflected waveform is disclosed. The waveform generator and an... | 08/28/2007 |
| 7251286 | Method and apparatus for space division multiple access receiver Methods and systems consistent with this invention receive a plurality of transmitted signals in a receiver having a plurality of receive elements, wherein each transmitted signal has a different spatial location. Such methods and systems receive the plurality of tr... | 07/31/2007 |
| 7242350 | Estimating an angle-of-arrival of a signal by determining polarization Estimating an angle-of-arrival of a signal includes receiving a signal sent from an emitter. The signal is received at a singly polarized antenna system associated with an antenna response model. An autocorrelation matrix having noise-related eigenvectors is generat... | 07/10/2007 |
| 7239275 | Methods and systems for tracking signals with diverse polarization properties Methods and systems for tracking signals with diverse polarization properties address both sensitivity and antenna tracking performance issues. In one embodiment, complex weightings for matching a polarization of an incident signal on a data channel are determined, ... | 07/03/2007 |
| 7224310 | Method and device for the recognition of the origin of encrypted data broadcasting The object of the present invention is intended to solve the problem of the broadcasting of conditional access data where certain parts must be accessible either for technical reasons or for commercial reasons. This object is reached by a method for processin... | 05/29/2007 |
| 7221181 | Directional power detection by quadrature sampling Power measurement and control in transmission systems are affected by changes in load conditions. A method and system are provided for detecting and controlling power levels independent of such load conditions. ... | 05/22/2007 |
| 7209528 | Over-sampling A/D converter with adjacent channel power detection Disclosed is a sampling circuit for a receiver in a wireless communication device that eliminates the need for separate discrete filtering components that can be expensive and bulky. The system utilizes techniques for ensuring that system components do not become sa... | 04/24/2007 |
| 7202812 | Technique for compensation of transmit leakage in radar receiver A radar system (500) radiates a radar transmit signal, has a radar signal receiver (503) and a canceller (505) for canceling leakage of the transmit signal into the radar signal receiver (503). The canceller (505) comprises a digit... | 04/10/2007 |
| 7201054 | System and method for resolving phase ambiguity of a transducer array to determine direction of arrival of received signals System and method for resolving phase ambiguities of various transducer arrays, including non-coplanar interferometer antennas on an aircraft skin, in order to determine the direction of arrival of a signal received by the array and emitted by a source remote from t... | 04/10/2007 |
| 7177613 | Reducing noise and distortion in a receiver system A receiver, implemented with low noise and low distortion, to process an input signal containing signals of interest and unwanted interference signal. In an embodiment, the receiver contains a mixer which generates an intermediate signal in the form of an electric c... | 02/13/2007 |
| 7171175 | Method for receiving radio frequency signal and a receiver device In a method (300) for receiving a radio signal, there are steps of: receiving (301, 303) first and second received signal components by use of first and second antennas having different properties; processing (305) a received signal component to... | 01/30/2007 |
| 7151508 | Antenna system and RF signal interference abatement method Disclosed is an antenna system including a Luneberg Lens having a spherically shaped outer surface and a spherically shaped focal surface spaced from its outer surface with a plurality of patch antenna elements disposed along the focal surface of the Luneberg Lens; ... | 12/19/2006 |
| 7123941 | Radio LAN master station system A radio LAN master station system which provides long distance communication and suffers from small interference by another system located inside and/or outside of a service area comprises a transceiver, and a plurality of directional antennas each directed to a res... | 10/17/2006 |
| 7119755 | Wave antenna lens system An array of dielectric wave antennas is disclosed. Each wave antenna has a central dielectric portion and two dielectric tapered portions, disposed on opposite sides of the central dielectric portion. The array is deployed in a lens shape and allows variation of the... | 10/10/2006 |
| 7113748 | System and method for improving polarization matching on a cellular communication forward link The present invention provides a method of controlling a plurality of beam patterns radiated by a base station in a wireless communication system. The method includes receiving at least one signal from a mobile station at the base station, determining estimated attr... | 09/26/2006 |
| 7109940 | Antenna element with curved dielectric member and array of such elements An antenna, which may be used as an element in an array, includes an elongated curved dielectric member having a high dielectric constant. One end of the dielectric member is in physical contact with the “center” conductor of an unbalanced transmission line, and... | 09/19/2006 |
| 7106443 | Optical signal-to-noise monitor having increased coherence Methods and apparatus for rapid, accurate OSNR measurements by directly measuring the spectrally-resolved State of Polarization (SOP) variation across each DWDM channel and using a polarization controller to deterministically extinguish the signal across narrow freq... | 09/12/2006 |
| 7095984 | Base station apparatus and direction-of-arrival estimating method Signals including a plurality of components representing a phase rotation between antenna elements by combining signals, which have arrived through each path of a first to an m-th paths, for every antenna are generated in RAKE combining sections 104-1 ... | 08/22/2006 |
| 7082155 | Reception level measuring system A reception level measuring system in which a base station in a code division multiple access (CDMA) mobile communication system measures a reception level of a signal from a mobile station. The reception level measuring system has an approximate-line estimating dev... | 07/25/2006 |
| 7079987 | Tunable filter device for spatial positioning systems A device for spatial positioning systems includes a programmable measurement filter that is dynamically tuned by the device signal processing unit. The signal processing unit analyzes available data including the measurement signal to determine the likelihood that a... | 07/18/2006 |
| 7072611 | Method and system for improving communication A modular cellular wireless communication base station includes a plurality of active radiator modules located at a desired antenna location. Each module includes at least one antenna, a transmitter, and a receiver. A beam forming network controls relative amplitude... | 07/04/2006 |
| 7068990 | Receiver for two orthogonally polarized signals The inventive receiver has a receiving branch for each of the two signals (EH, EV) and a demodulator (MHE, MVE) and means (SH, SV) for synchronising the phase of the received signal (EH, EV) with the transmitting phase are provided in said branches, respectively. Po... | 06/27/2006 |
| 7053838 | Antenna structure and installation An antenna system installation comprising a tower/support structure, and an antenna structure mounted at the top of said tower/support structure, said antenna structure comprises a plurality of antenna elements, a plurality of power amplifiers, each power amplifier ... | 05/30/2006 |
| 7050603 | Watermark encoded video, and related methods Watermarks in video signals or the accompanying audio track are used to associate video objects in a video sequence with object specific actions or information. A video object refers to a spatial and temporal portion of a video signal that depicts a recognizable obj... | 05/23/2006 |
| 7043275 | Radio communication apparatus using adaptive antenna In a radio communication apparatus, delay profiles of a desired wave and delay waves thereof are estimated by plural delay profile estimation sections for each of received signals from directional antennas constituting an array antenna. Received signals from the ant... | 05/09/2006 |
