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The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 8421673 | Method and software for spatial pattern analysis A method and software implementation for spatial pattern analysis. A user-guided test procedure is implemented to measure features of an antenna under test to determine the antenna's far-field patterns. The antenna features include RF amplitude or phase, and positio... | 04/16/2013 |
| 8184051 | Method and arrangement for measuring the directional characteristic of an antenna to be tested A method of measuring a directional graph of a test antenna includes disposing a plurality of measuring probes relative to the test antenna, each being disposed at a different first predetermined height above a reference plane; disposing the test antenna at a second... | 05/22/2012 |
| 8063821 | Null-fill antenna, omni antenna, and radio communication equipment A wide-angle null-fill antenna with no null in the depression angle range, an omni antenna using the same, and radio communication equipment. A null-fill antenna comprises a first antenna array including antenna elements arranged with a prescribed point as the cente... | 11/22/2011 |
| 8018380 | System and method for measuring antenna radiation pattern in Fresnel region There is a provided a system for measuring an antenna radiation pattern in a Fresnel region, including: a fixed antenna and a movable antenna located in the Fresnel region to acquire a far-field radiation pattern; a moving unit for moving upward or downward to adjus... | 09/13/2011 |
| 8009094 | Method for producing wavefronts at a desired angle An apparatus and method is described for generating an electromagnetic, or acoustic field by use of a number of field sources in order to produce a field anomaly at a known target location. The field anomaly is characterized by having a wavefront at the target locat... | 08/30/2011 |
| 7994979 | Antenna positioning method and antenna mounting device for communication device, and antenna device In an antenna positioning method for a communication device that performs communication using a plurality of antennas positioned on a straight line, the method has a first step of measuring radiation pattern characteristics of each antenna, a second step of detectin... | 08/09/2011 |
| 7928906 | Antenna measurement systems An antenna measurement range and a method of calibrating same is proposed which at least substantially reduces the effects of echoing or multi path. The method of calibrating the range comprises the steps of: generating and radiating a training signal; receiving the... | 04/19/2011 |
| 7847731 | Method for the operation of an antenna group having a plurality of transmitters and a plurality of receivers and associated apparatus The present invention relates to a method for the operation of an antenna group (1) having M≧2 transmitters and N≧2 receivers (3) for the digital beamforming. In the method, a coherent transmit signal is transmitted in a transmit-receive-cycle via ... | 12/07/2010 |
| 7843386 | System and method for determining the beam center location of an antenna A system and method for determining the beam center location of an antenna, such as a global positioning system (GPS) antenna, are provided. A system for determining the beam center of an antenna may include a plurality of radio frequency (RF) probes, such as Integr... | 11/30/2010 |
| 7830307 | Array antenna and a method of determining an antenna beam attribute A method of determining one or more attributes of an antenna beam based on measuring phase and/or amplitude differences at different points in a feed network. Amplitude and/or phase are measured by a probe (13) at an input to a differential variable element (... | 11/09/2010 |
| 7728769 | Adaptive processing method of clutter rejection in a phased array beam pattern An adaptive processing method of and system for clutter rejection in a phased array beam pattern. The amplitude distribution of the transmit elements of a two-dimensional phased array is determined. A desired pattern with low side lobes for a linear array is synthes... | 06/01/2010 |
| 7652623 | Null-fill antenna, omni antenna, and radio communication equipment A wide-angle null-fill antenna with no null in the depression angle range, an omni antenna using the same, and radio communication equipment. A null-fill antenna comprises a first antenna array including antenna elements arranged with a prescribed point as the cente... | 01/26/2010 |
| 7450065 | Optimization of radar antenna switching hybrid in response to operating frequency A radar system operates at various different frequencies, and routes power among various antennas by use of a hybrid arrangement. The system is precalibrated at each possible operating frequency by adjusting the phase shifts associated with the hybrid in a feedback ... | 11/11/2008 |
| 7382315 | System for and method of improving beyond line-of-sight transmissions and receptions A radio system can be configured as a beyond line-of-sight system and includes a number of antennas, a number of phase adjusters and a transmitter/receiver unit. Each of the phase adjusters can be associated with a respective antenna of the antennas. The antennas ca... | 06/03/2008 |
| 7372402 | Method for enhancing the measuring accuracy in an antenna array The invention refers to a method and a system for enhancing the measuring accuracy in an antenna array (1), where the method comprises the steps of; a) receiving analog signals on all antenna elements (2) at a first time t1; producing first ... | 05/13/2008 |
| 7372398 | Electronic target position control at millimeter wave for hardware-in-the-loop applications An apparatus for use in controlling a simulated target position in a millimeter wave, hardware-in-the-loop system includes a pair of horns and a conditioning circuit. The conditioning circuit is capable of generating a pair of output millimeter wave signals, each to... | 05/13/2008 |
| 7366466 | Wireless communication device interconnectivity A wireless communication device that is attached or included in an electronic object, such as a portable computer, having its own separate communication system. The separate communication system has an antenna for receiving and transmitting wireless communications, ... | 04/29/2008 |
| 7362270 | System and method to perform network node localization training using a mobile node A method and system for determining a location of at least one stationary node of a wireless network, which includes providing a predetermined path within a geographic space of the wireless network, prior to localization, moving a mobile node along the predetermined... | 04/22/2008 |
| 7356473 | Management and assistance system for the deaf A computer-aided communication and assistance system that uses a signal processing and other algorithms in a processor in wireless communication with a microphone system to aid a deaf person. An instrumented communication module receives information from one or more... | 04/08/2008 |
| 7333056 | Adaptive antenna radio communication device An adaptive antenna radio communication device comprises a divided band direction estimating unit (4) for estimating the direction by calculating the cross correlations between a pilot signal and sub-carrier signals of the respective divided bands received by... | 02/19/2008 |
| 7313391 | Modeling of RF point source reference for analysis of wireless signal propagation A data collection and evaluation method for determination of wireless signal propagation from an incomplete set of measured data and for modeling the system as a set of RF point sources located at the tower in each cell. RF propagation measurements are collected acc... | 12/25/2007 |
| 7296163 | System and methods for encrypted execution of computer programs The invention provides a method for encrypting a program for execution on a remote host computer on a network, such that correct execution by the remote host computer is ensured, and such that the remote host computer remains unaware of the computations or data asso... | 11/13/2007 |
| 7292182 | Method of calibrating a microwave source The present invention relates to a method for calibrating the phase of a microwave source, in which: a calibration circuit is closed, the calibration circuit comprising an injection channel connected to a measurement channel via the source to be calibrated; a test s... | 11/06/2007 |
| 7292178 | Aircraft hazard detection and alerting in terminal areas A weather radar system or method can be utilized to determine potential weather hazard for an aircraft in a terminal area. The weather radar system can utilize processing electronics coupled to an antenna. The processing electronics can determine presence of the pot... | 11/06/2007 |
| 7289826 | Method and apparatus for beam selection in a smart antenna system A method of beam selection in a smart antenna system is provided. The method includes receiving a plurality of uplink beams by a plurality of receivers, each corresponding with one of the plurality of uplink beams. Each uplink beam includes signals transmitted by a ... | 10/30/2007 |
| 7280084 | Antenna system for generating and utilizing several small beams from several wide-beam antennas Antenna systems, in particular but not exclusively, for use in base transceiver stations of wireless telecommunication networks. Specifically, the present invention combines two or more wide-beam antennas to generate relatively narrow beams and can be used in any se... | 10/09/2007 |
| 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 |
| 7280077 | System and method for measuring radiation characteristic of antenna An antenna measurement system is provided to measure the radiation characteristic of a source antenna (2), and obtain more correct far-field range data within a short period of time. The antenna measurement system includes a tester body placed apart from the ... | 10/09/2007 |
| 7280070 | Robust optimal shading scheme for adaptive beamforming with missing sensor elements A new technique for re-computing shading parameters for low sidelobe levels for a radar or sonar system is disclosed. When some of the sensor elements become inoperative, remaining shading parameters are recomputed using a new constraint. This approach leads to an o... | 10/09/2007 |
| 7262744 | Wide-band modular MEMS phased array A phased array antenna (100) comprising a planar array having a plurality of modules (101,102,103). Each module comprises an integrated multilayer structure having a plurality of radiating elements (215), at least one of the layers is produced u... | 08/28/2007 |
| 7231197 | Angle rate interferometer and passive ranger A receiver includes a processor and an RF bridge. The RF bridge is coupled to the processor to receive a reference signal from the processor. The RF bridge includes first and second frequency converters coupled to respective first and second antennas. The RF bridge ... | 06/12/2007 |
| 7224321 | Broadband smart antenna and associated methods A smart antenna includes a ground plane, an active antenna element adjacent the ground plane, and passive antenna elements adjacent the ground plane. The passive antenna elements have different sizes for defining different resonant frequencies for increasing a bandw... | 05/29/2007 |
| 7221239 | Variable power divider A variable power divider and method can vary the RF power between ports in a high power and multi-carrier RF environment, such as is used in controlling signals sent and received in a base station antenna. The variable power divider can include a single-control phas... | 05/22/2007 |
| 7215229 | Laminated relays with multiple flexible contacts Methods and systems of assembling and making laminated electro-mechanical system (LEMS) switches are described. A plurality of structural layers are formed that include at least two structural layers that each include a flexible member. The plurality of structural l... | 05/08/2007 |
| 7215788 | Digital loudspeaker A digital pulse-width-modulation (PWM) generator comprising: an n bit digital magnitude comparator having first and second n bit inputs and an output indicative of the relative values of the signals applied at the first and second inputs; a first n bit digital up/do... | 05/08/2007 |
| 7215298 | Extendable/retractable antenna calibration element An antenna array coacts with a ground plane for radiation. Calibration of the array is accomplished with the aid of one or more extensible calibration antenna elements, such as monopole antenna elements. Each calibration monopole is ordinarily retracted below the gr... | 05/08/2007 |
| 7212466 | Producing amplitude values for controlling pixel illumination on a sonar display A method and apparatus for producing an amplitude value for use in controlling illumination of a pixel on a display, in response to a sampled sonar signal produced by an element of a sonar array. A pixel time associated with the pixel is found, the pixel time repres... | 05/01/2007 |
| 7210392 | Autonomous weapon system An autonomous weapon system including weapon (9) and weapon mounting system (7, 8) operable to point the weapon (9) in accordance with input control signals. The weapon system includes a sensor (2) to acquire images and other data from a ... | 05/01/2007 |
| 7203223 | Method of radio channel simulation and channel simulator The invention relates to a method of performing channel simulation and a channel simulator. The channel simulation is performed digitally. At least a section of a signal (206) to be fed to simulation is transformed by convolution transformation from time spac... | 04/10/2007 |
| 7199753 | Calibration method for receive only phased array radar antenna A method of calibrating a receive only, phased array antenna in its operating environment. Two transmit signals of different but unknown polarizations are used to calibrate the receive only antenna array, and the receive element locations and polarizations are accur... | 04/03/2007 |
