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| Number | Title | Issue Date |
| 5790080 | Meander line loaded antenna An antenna includes one or more conductive elements for acting as radiating antenna elements, and a slow wave meander line adapted to couple electrical signals between the conductive elements, wherein the meander line has an effective electrical length wh... | 08/04/1998 |
| 5625364 | Apparatus and method for finding a signal emission source An apparatus and method are described for direction finding the source of emf emissions including a monotone signal by detecting the phase changes of the monotone signal during movement relative to the source. A software embodiment measures the amount of ... | 04/29/1997 |
| 5611856 | Method for growing crystals The present invention provides a method for producing single crystals of a group II-IV-V2 and group I-III-VI2 compounds by synthesizing compound material from its constituents and separately melting and refreezing the material in a t... | 03/18/1997 |
| 5596209 | Photoconductive semiconductor control device The present invention provides a radiant energy activated semiconductor control device having N+ ion implanted regions exposed to the radiant energy for switching purposes.... | 01/21/1997 |
| 5512908 | Apparatus and method for locating cellular telephones A method for determining the time difference of arrival, tdoa, of signals from a cellular telephone, includes determining tdoas for a plurality of channels, averaging the tdoas from the channels, subtracting the average tdoa from the individual channel td... | 04/30/1996 |
| 5471180 | Low-loss dielectric resonant devices having lattice structures with elongated resonant defects A dielectric resonator comprising a resonant defect structure diposed in a lattice structure formed of a plurality of multi-dimensional periodically arranged dielectric elements confines electromagnetic energy within a frequency band in the photonic band ... | 11/28/1995 |
| 5469407 | Parachute array This invention is a parachute array in which a plurality of hydrophones are attached to the skin of a planar or volumetric parachute or affixed to strings that are positioned around a planar or volumetric parachute. When the parachute is moved through wat... | 11/21/1995 |
| 5449899 | Apparatus and method for highlighting returns from optically augmented targets A method and apparatus for highlighting returns from optically augmented targets includes in one embodiment a receiver, a viewing device coupled to the receiver and first and second illuminators. The first illuminator is arranged on axis with the receiver... | 09/12/1995 |
| 5440636 | Apparatus and method for processing of frequency hopping communications The present invention relates to signal processors and processing, and more particularly to apparatus and method for sensing, detection and/or demodulation of frequency hopping signals.... | 08/08/1995 |
| 5436453 | Dual mode energy detector having monolithic integrated circuit construction The present invention provides a monolithic integrated detector array for detecting both infrared, IR, and millimeter wave, MMW, energy. Elements include an integrated circuit substrate having both IR sensing elements and MMW antenna elements formed withi... | 07/25/1995 |
| 5425130 | Apparatus for transforming voice using neural networks An apparatus for transforming a voice signal of a talker into a voice signal having characteristics of a different person provides apparatus for separating the talker's voice signal into a plurality of voice parameters including frequency components, a ne... | 06/13/1995 |
| 5410399 | Interpolative direction determining system Apparatus for determining position within a beam, comprising pulses of energy transmitted in coded patterns, is achieved by processing the signals received from the beam to generate a value indicative of coarse position within the beam and by interpolatio... | 04/25/1995 |
| 5389943 | Filter utilizing a frequency selective non-conductive dielectric structure A filter utilizes a frequency selective, non-conductive, dielectric structure for filtering electromagnetic energy in the millimeter to far infrared frequency bands. The filter includes a non-conductive, high-dielectric, background material positioned to ... | 02/14/1995 |
| 5377305 | Outer product neural network An outer product neural network provides a predetermined number of processing elements for extracting principal components of an input vector. The residual vector of the network when cascaded into a similar outer product neural network provides additional... | 12/27/1994 |
| 5370458 | Monolithic microwave power sensor A monolithic integrated circuit power sensor provides a monolithic integrated circuit substrate a conversion element formed either on or in the substrate for converting microwave energy into heat, an electrically insulating dielectric layer affixed to the... | 12/06/1994 |
| 5363104 | Jamming signal cancellation system Improved radar system performance in a jamming environment is achieved by detecting the AM difference frequency produced by the beating of the desired radar signal with the jamming signal and applying same to one input of a balanced modulator while simult... | 11/08/1994 |
| 5343207 | Real-time wide-band compressive-receiver system The input ports (18) of an imaging compressive receiver (20) receive from a tapped delay line (16) progressively delayed versions of a received signal s(t). Because of the delays, a signal component in the received signal appears at least at one of the in... | 08/30/1994 |
| 5309412 | Element releasing system A system for storing and deploying a number of elements sequentially in connected but spaced-apart relationship is described. Adjacent elements are joined together temporarily by connectors which overlay adjacent elements. The connectors are bound to the ... | 05/03/1994 |
| 5302024 | Monolithic microwave power sensor using a heat sensing diode junction A monolithic integrated circuit power sensor provides a monolithic integrated circuit substrate, a conversion element formed either on or in the substrate for converting microwave energy into heat, and a thermally sensitive diode junction formed in suffic... | 04/12/1994 |
| 5256920 | Acoustic transducer An acoustic transducer provides an elongated outer shell made of magnetic material and having a pair of flexural members attached to each other in the elongated direction and having a flexural portion extending normally to the elongated direction and form... | 10/26/1993 |
| 5206531 | Semiconductor device having a control gate with reduced semiconductor contact A semiconductor device is provided of the type having a doped semiconductor region coupled to source and drain electrodes and an elongated control gate contacting the doped region along the length of the gate for forming a nonconducting depletion region a... | 04/27/1993 |
| 5189368 | Magnetometer A magnetometer is desclosed in which a gas cell containing atomic vapor is pulse pumped at one of the transitions of the gas in the cell. After the pulse has passed through the gas cell, thereby causing alignment of all the individual atomic moments along... | 02/23/1993 |
| 5175713 | Laser sound detector In order to sense the presence of sound in a remote underwater location, a neutrally buoyant reflector (20) is deployed underwater, and a laser (12) disposed at a remote location aims coherent light at the reflector (20). A detector (24) senses the cohere... | 12/29/1992 |
| 5168215 | Instantaneous frequency measurement apparatus and method An apparatus and method for measuring the frequencies of a pair of signals simultaneously present in a composite signal, comprising the steps of includes components for squaring the composite signal, filtering the squared signal for separating a first pas... | 12/01/1992 |
| 5148124 | Monolithic microwave integrated circuit noise generator and variable resistance device A monolithic microwave integrated circuit device provides a microwave transmission line with a resistor coupled thereto and a heating element thermally coupled to the resistor but electrically insulated therefrom by a dielectric layer. Heating the resisto... | 09/15/1992 |
| 5099248 | Transmission signal direction finding apparatus and method An apparatus and method for determining the direction of origin of a received transmission signal using a spinning antenna pair generally provides the steps and apparatus for measuring the phase difference between signals simultaneously received, coarsely... | 03/24/1992 |
| 5067648 | Apparatus for holding printed circuit boards during wave soldering and processing An apparatus for supporting printed circuit boards during processing provides a peripheral frame, a multiplicity of support members having interfacing flat surfaces defining an imaginary reference plane from both sides thereof and clips for supporting pri... | 11/26/1991 |
| 5061944 | Broad-band high-directivity antenna This Yagi-Uda-type antenna includes also a sleeve embracing the dipole. The sleeve may be a closed cylindrical element surrounding the dipole or it may comprise a pair of discrete elements forming an "open sleeve". The dipole, sleeve, reflector, and direc... | 10/29/1991 |
| 5059942 | Bit masking compare circuit A masked compare circuit for comparing a first N-bit dataword to a second N-bit dataword, the circuit including a decoder for receiving an M-bit mask code and generating an output signal identifying a bit position, K, derived from the M-bit mask code, M a... | 10/22/1991 |
| 5056014 | Network simulation system A data processing system, for processing programs in the form of networks of connected processing elements each relating to an arithmetic or logical operation, includes a memory for storing code representations of the processing elements and process data,... | 10/08/1991 |
| 5023440 | Tracker using angle-converting cones An optical tracker includes a plurality of detectors (20, 22), each of which is associated with an etendue-preserving concentrator (27, 28) that directs radiation to it. The concentrators (27, 28) associated with complementary detectors (20, 22) are orien... | 06/11/1991 |
| 5018099 | Comparison circuit A comparison circuit which is both window addressable and content addressable, the circuit including comparison elements which include a pair of match transistors which isolate outputs indicating whether an input is not greater than stored data and whethe... | 05/21/1991 |
| 5000566 | Optical velocimeter This optical velocimeter may be installed in an aircraft to measure the true airspeed and the angles of attack and of sideslip of the aircraft. Alternatively, the velocimeter may be mounted in a wind tunnel to measure the velocity of the airstream passing... | 03/19/1991 |
| 4992796 | Computed-interferometry radar system with coherent integration In a radio-frequency radar system, a radar antenna (12) irradiates a region to be monitored, and antenna elements (14a-p) arrayed irregularly about a mobile platform (10) receive the resultant echo signal, which mixers (18 and 21) translate in frequency, ... | 02/12/1991 |
| 4969043 | Image-convolution and enhancement apparatus This is an apparatus for sharpening and otherwise enhancing images such as those produced on a screen or on the face plate of a cathode-ray tube. Regarding an image as being composed of a very large number of elements called "pixels," the apparatus of thi... | 11/06/1990 |
