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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 8373594 | Low frequency directed energy shielding A method and apparatus for use in generating and imparting a low frequency, directed energy wavefield are disclosed. In a first aspect, the presently disclosed technique includes a low frequency directional array, comprising: a plurality of array elements capable of... | 02/12/2013 |
| 8354960 | Method for low sidelobe operation of a phased array antenna having failed antenna elements Described is a method of modifying an antenna pattern for a phased array antenna having at least one failed antenna element. A number of proximate beamformers in a proximate angular region about a beamformer at an angle of interest are determined. Each of the proxim... | 01/15/2013 |
| 7440758 | Cell planning methods and apparatus, and networks configured based on same Coverage areas for wireless networks are divided into a plurality of cells that are arranged in rows. Channel frequencies are assigned to cell sectors and associated with respective antenna axes. The antenna axes of adjacent rows are alternatingly rotated, thereby r... | 10/21/2008 |
| 7423587 | Method for frequency-driven generation of a multiresolution decomposition of the input to wave-based sensing arrays A method for generating a multiresolution decomposition of an array signal by a bank of spatial bandpass filters is disclosed. The signal processing operation is implemented through the use of the directivities of the individual array elements and does not degrade t... | 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 |
| 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 |
| 7362264 | Interference management A GPS system is configured to manage interference from disturbing signals. The system includes an antenna, an RF front end unit, a filtering unit, amplifying circuits, a carrier recovery unit, a correlation unit, and a calculating unit that performs range calculatio... | 04/22/2008 |
| 7339521 | Analytical instruments using a pseudorandom array of sources, such as a micro-machined mass spectrometer or monochromator Novel methods and structures are disclosed herein which employ pseudorandom sequences to spatially arrange multiple sources in a pseudorandom source array. The pseudorandom source array can replace the single source in analytical instruments relying on spatial separ... | 03/04/2008 |
| 7336736 | Method of detecting and processing pulsed signals in a radio signal The invention allows the detection and processing in a radio signal received by a receiver, of any signal of “pulsed” type present in radio signals applied to the input of a radiofrequency receiver, the receiver having an analogue/digital converter for performin... | 02/26/2008 |
| 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 |
| 7324042 | Monostatic radar beam optimization A method and system for optimizing transmit beam and receive beam antenna radiation patterns. The method includes inputting initial estimate of beam weights for a transmit beam and a receive beam to an optimizer; and using a cost function to optimize beam weights so... | 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 |
| 7315279 | Antenna system for producing variable-size beams An antenna system has multiple antenna feed elements combined in a number of element sets independently controlled to provide a beam of a variable size. Multiple input power dividers are provided for dividing an input signal, and multiple phase controllers are respe... | 01/01/2008 |
| 7312751 | Phased array antenna system to achieve suppression of undesired signal components Various techniques are disclosed to suppress undesired signal components introduced by non-linear amplifiers of phased array antenna systems to accommodate bandwidths greater than one octave. For example, in accordance with one embodiment, a phased array antenna sys... | 12/25/2007 |
| 7295154 | Vehicle obstacle warning radar A method for detecting an object using a transmitting antenna and an array of receiving antennas. The method comprises the step of transmitting a signal from the transmitting antenna. The magnitude and phase of a respective received signal at each of the receiving a... | 11/13/2007 |
| 7283101 | Antenna element, feed probe; dielectric spacer, antenna and method of communicating with a plurality of devices A multiband base station antenna for communicating with a plurality of terrestrial mobile devices is described. The antenna including one or modules, each module including a low frequency ring element; and a high frequency dipole element superposed with the low freq... | 10/16/2007 |
| 7265713 | Overlapping subarray architecture An embodiment of an electronically scanned array antenna includes an array of radiative elements having an array height. A plurality of separate subarrays of the radiative elements include a first row comprising a first plurality of subarrays, wherein subarrays of t... | 09/04/2007 |
| 7257375 | Receiver with dual D.C. noise cancellation circuits A receiver for eliminating D.C. noise from a signal received from a communication channel includes an input circuit configured to receive an input signal. The receiver includes an error circuit configured to generate an error signal in accordance with the input sign... | 08/14/2007 |
| 7257370 | Method and apparatus for mitigating interference from terrestrial broadcasts sharing the same channel with satellite broadcasts using an antenna with posterior sidelobes An apparatus for simultaneously receiving a first signal from a non-terrestrial source and a second signal from a terrestrial source on the same or overlapping channels using a receive antenna with posteriorly-directed sidelobes is disclosed. The apparatus comprises... | 08/14/2007 |
| 7250899 | GPS receiver with improved immunity to collocated transmissions and method therefor A method and apparatus for limiting the effect of interfering transmission on a Global Positioning System (GPS) receiver is disclosed. A first mode of operation of the GPS receiver is provided wherein the AGC of the receiver is operated in a linear state. A second m... | 07/31/2007 |
| 7196657 | Radar system using RF noise A radar system that utilizes predetermined, pseudorandom, or random waveforms that may be substantially matched to the impulse response of the radar and any surrounding clutter such that the signal-to-clutter ratio may be optimized and/or such that specific targets ... | 03/27/2007 |
| 7190746 | Multiple lobe dot product detector for M-code GPS receivers A positioning system receiver is disclosed. The positioning system receiver includes an antenna for receiving radio frequency (RF) signals. The positioning system receiver also includes a radio frequency front end system configured to convert the received RF signals... | 03/13/2007 |
| 7161529 | Dual forward scattering method for modeling multipath propagation Analysis of electromagnetic (or acoustic) multipath propagation inventively focuses upon the transmitter-to-target propagation (transmitted propagation reaching target via both direct pathway and forward scattered pathway) and the target-to-receiver propagation (re-... | 01/09/2007 |
| 7103384 | Apparatus and method for forming a forward link transmission beam of a smart antenna in a mobile communication system A method and apparatus for a base station including an antenna array calculates a direction of a weight vector of a transmission beam to maximize in-phase component power for a common channel signal in a transmission channel signal for transmission to a mobile stati... | 09/05/2006 |
| 7098848 | Phased array antenna intermodulation suppression beam smearing method An intermodulation suppression method using phased array antenna electronics insignificantly degrades the desired primary main beams while substantially suppressing undesired intermodulation product beams, and particularly undesired third-ordered intermodulation pro... | 08/29/2006 |
| 7095358 | Technique for cancellation of elevated clutter for the detection of fixed and ground moving targets under trees A target is detected under a forest canopy or other elevated clutter where the target is obscured by the elevated clutter. Radar returns reflected from the target on the surface, combined with those from the elevated clutter are digitized. Motion compensation is per... | 08/22/2006 |
| 7081851 | Overlapping subarray architecture An embodiment of an electronically scanned array antenna includes an array of radiative elements having an array height. A plurality of separate subarrays of the radiative elements include a first row comprising a first plurality of subarrays, wherein subarrays of t... | 07/25/2006 |
| 7046064 | Clock generation with continuous phase A clock generation system includes an oscillator and one or more clock generators. The oscillator provides inphase and quadrature oscillator signals having a fixed frequency. Each clock generator receives the oscillator signals and generates a respective output cloc... | 05/16/2006 |
| 7043217 | Combining reception method and apparatus A method and apparatus is provided for calculating possible values of a combination ratio for signals received via a plurality of antennas (A1 to An) according to different algorithms by means of a plurality of algorithm units (31 to 33), calcul... | 05/09/2006 |
| 7026981 | Surface interaction region methodology for delimiting multipath propagation inquiry Analysis of electromagnetic (or acoustic) multipath propagation inventively confines the assessment of multipath propagation to a “surface interactive region” (“SIR”), intermediate the target and transmitter and/or the target and receiver. The down range tim... | 04/11/2006 |
| 6939308 | Acoustic sensor array for non-invasive detection of coronary artery disease Methodology for determining the bounds of a patient's acoustic window is described. Medical application acoustic array designs with apertures accommodated by patient acoustic windows and merged acoustic windows are exemplified. ... | 09/06/2005 |
| 6937183 | Object detecting method and object detector Beams are irradiated in three directions by switching an irradiation direction of a mainlobe of an antenna by stages, and an echo is received from a detection object obtained in the mainlobe or a sidelobe in each irradiation direction. Then, reflection power intensi... | 08/30/2005 |
| 6867726 | Combining sidelobe canceller and mainlobe canceller for adaptive monopulse radar processing An improvement in monopulse radar achieves nulling of a single mainlobe jammer and multiple sidelobe jammers while maintaining the angle measurement accuracy of the monopulse ratio by cascading a multiple sidelobe canceller and a mainlobe canceller, and imposing a m... | 03/15/2005 |
| 6823174 | Digital modular adaptive antenna and method An adaptive antenna is implemented using a plurality of modular array element modules. Each array element module comprises an antenna element of the adaptive antenna. Each antenna element is coupled to a weighting circuit is also coupled to a previous weighting circ... | 11/23/2004 |
| 6778810 | Method and apparatus for mitigating interference from terrestrial broadcasts sharing the same channel with satellite broadcasts using an antenna with posterior sidelobes An apparatus for simultaneously receiving a first signal from a non-terrestrial source and a second signal from a terrestrial source on the same or overlapping channels using a receive antenna with posteriorly-directed sidelobes is disclosed. The apparatus comprises... | 08/17/2004 |
| 6734822 | Transmission system and method on a forward link The present invention relates to a communication system, and more particularly, to transmission system and method on a forward link in a communication system having a plurality of antenna arrays. In particular, the present invention calculates a weighted vector by u... | 05/11/2004 |
| 6731233 | Method of suppressing jammer signals In a method of suppressing jammer signals in the received signal of radar antennas of HPRF applications (such as pulse Doppler radar systems) by means of Fast Fourier Transformation and side lobe cancellation, the receiving radar antenna has a sum channel, a differe... | 05/04/2004 |
| 6701241 | Method and device for operating a clutch A method and device for operating a clutch between an internal combustion engine and at least one driven wheel of a vehicle, a torque being transmitted between the engine and the driven wheel by pressing the clutch together with a clamping force or a clam... | 03/02/2004 |
| 6653969 | Dispersive jammer cancellation Generating a secondary beam (11) slightly offset from the main data collection beam (9) and obtaining hot clutter reference to be used in a conventional side lobe jammer processing algorithm (31). Advantage is taken of the typical geometries of a standoff... | 11/25/2003 |
| 6642883 | Multi-beam antenna with interference cancellation network A means and method to increase the beam traffic capacity, especially in high user density regions, of a multi-beam antenna communication system with multiple signals at any frequency transmitted (received) when in a transmit (receive) mode by canceling in... | 11/04/2003 |
