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| Number | Title | Issue Date |
| 4870421 | Regulating switch for transmitting modules in a phased array radar The invention relates to compact means for turning power on and off and regulating that power as it is supplied to a pulsed transmitting module in a phased array radar system. The arrangement comprises an operational amplifier, which compares the voltage ... | 09/26/1989 |
| 4857777 | Monolithic microwave phase shifting network A phase shifting network with multiple outputs between which a constant phase difference is maintained over a large frequency range. The configuration consists of a four branch all pass network which in turn consists of four similar all pass networks one ... | 08/15/1989 |
| 4855937 | Data block processing for fast image generation An improvement for the real-time computer generation of visual scenes based on an algorithm that reduces the processing of elevation data to simple repetitive accumulations and a compare operation to generate occult data using grid elevation data bases is... | 08/08/1989 |
| 4837532 | MMIC (monolithic microwave integrated circuit) voltage controlled analog phase shifter The invention relates to a voltage controlled analog phase shifter for operation at millimeter and microwave wavelengths using MMIC (Monolithic Microwave Integrated circuit) fabrication techniques. The phase shifter is formed of an artificial transmission... | 06/06/1989 |
| 4825220 | Microstrip fed printed dipole with an integral balun A microstrip fed printed dipole with an integral balun is disclosed, fabricated upon a planar dielectric substrate by patterning metallizations disposed on the two surfaces of the substrate. In the arrangement, the ground plane of the unbalanced microstri... | 04/25/1989 |
| 4821212 | Three dimensional texture generator for computed terrain images An improvement for the real-time computer generation of visual scenes based on an algorithm that reduces the processing of elevation data to simple repetitive accumulations and a compare operation to generate occult data using grid elevation data bases is... | 04/11/1989 |
| 4816791 | Stripline to stripline coaxial transition The invention relates to a transition between stripline transmission lines that is efficient at microwave frequencies and readily fabricated, and which may be used to achieve cross-overs in stipline circuits. The transition includes a coaxial section placed be... | 03/28/1989 |
| 4806944 | Switchable matching network for an element of a steerable antenna array The invention relates to a matching network which may be serially inserted in the path between a transmitter power amplifier and/or a receiver low noise amplifier and an element of a steerable array antenna to compensate for mismatching occurring when the... | 02/21/1989 |
| 4806937 | Power distribution system for a phased array radar The invention relates to the distribution of power and control commands to a plurality of pulsed T/R modules coupled to the antenna elements of a phased array radar and arranged in rows and columns. The novel power distribution system includes a large num... | 02/21/1989 |
| 4806704 | Metal matrix composite and structure using metal matrix composites for electronic applications The invention relates to a metal matrix composite used to support and/or enclose discrete electronic semiconductor devices, monolithic integrated circuits, hybrid circuits, and multi-layer printed wiring boards. The matrices herein disclosed employ alumin... | 02/21/1989 |
| 4800393 | Microstrip fed printed dipole with an integral balun and 180 degree phase shift bit An improved element for use in an electrically steered antenna array is disclosed comprising a dipole, an integral balun and a 180° phase shift bit. The arrangement utilizes printed circuit techniques throughout using an unbalanced microstrip for connect... | 01/24/1989 |
| 4783666 | Protective shield for an antenna array A protective shield for an electrically steered, high performance C Band antenna array is disclosed. The shield is of a multi-layer construction in which a sandwich is formed between two fiberglass layers and a central foam core to minimize electrical ref... | 11/08/1988 |
| 4783593 | Optical system for wide angle IR imager The invention relates to a high performance optical system for a wide angle IR imager requiring a cryogenic environment for the IR detector array. The wide angle requirement makes it necessary for one lens to be behind a "cold aperture" within the cryogen... | 11/08/1988 |
| 4771247 | MMIC (monolithic microwave integrated circuit) low noise amplifier The invention relates to a low noise amplifier for use at microwave frequencies which may be fabricated using integrated circuit techniques. In accordance with the invention, critical components are made adjustable so as to simplify the design process and... | 09/13/1988 |
| 4734776 | Readout circuit for an optical sensing charge injection device facilitating an extended dynamic range The invention relates to a charge injection device for optical sensing including a novel readout circuit facilitating an extended dynamic range. The invention has primary application to linear arrays for IR sensing. Sensitive, low-level operation is achieved i... | 03/29/1988 |
| 4734751 | Signal scaling MESFET of a segmented dual gate design A novel signal scaling MESFET of a segmented dual gate design is disclosed. The MESFET, which is monolithically integrated on a semi-insulating substrate capable of localized surface modification to form active semiconductor regions using MMIC (monolithic... | 03/29/1988 |
| 4734583 | Readout circuit for dual-gate CID imagers with charge sharing corrected for subtractive error A readout circuit for IR sensing charge injection devices (CID) is disclosed, the CID comprising a two-dimensional array of dual-gate sensing sites on an InSb or HgCdTe substrate. The novel readout circuit, which operates in the charge sharing mode (CSM) ... | 03/29/1988 |
| 4734582 | Integration time control for a radiation sensitive charge injection device A novel readout circuit for a charge injection device is disclosed permitting selection of the integration time to optimize performance. A primary application of the invention is to IR sensing in which performance is required at both low and very high lev... | 03/29/1988 |
| 4703471 | Monolithically integrated electro-optical multiplexer/demultiplexer A monolithically integrated circuit is described for multiplexing parallel electrical data into a serial bit stream for transmission by fiber optics to a remote utilization apparatus and for demultiplexing a serial bit stream received from a fiber optics ... | 10/27/1987 |
| 4682236 | Read and clear readout circuit and method of operation of an IR sensing charge injection device The invention relates to a read and clear readout circuit and a method of operation of an IR sensing array. The invention eliminates "readout circuit lag" which reduces transient response for an individual sensor, and reduces angular resolution of an arra... | 07/21/1987 |
| 4679122 | Metal core printed circuit board A novel metal core printed circuit board and a method of making it are described. The circuit board comprises a metal substrate, a patternable metal foil, and an insulating layer of thermoplastic resin whose glass transition temperature is exceeded during... | 07/07/1987 |
| 4676663 | Arrangement for remote ultrasonic temperature measurement The invention relates to an arrangement for remote ultrasonic temperature measurement. The arrangement employs a sensor, which in turn comprises an electromechanical transducer, a sensing element, and a hollow ultrasonic waveguide for coupling the sensing... | 06/30/1987 |
| 4661801 | Decoder for three level coded data The decoder herein described recovers the clocking and the data in a binary format from a three level coded signal. The decoder has application to data rates in excess of one half gigabits per second, which are common to optical communication channels. Th... | 04/28/1987 |
| 4652766 | Direct coupled charge injection readout circuit and readout method for an IR sensing charge injection device The invention relates to an improved readout circuit and readout method for an IR sensing array. The invention, given a limited time interval for reading out the signal from a sensor element in an array of sensor elements, permits a longer time to be devo... | 03/24/1987 |
| 4650346 | Arrangement for ultrasonic temperature measurement using a resonant sensor The invention relates to an arrangement for ultrasonic temperature measurement. The arrangement combines an ultrasonic temperature sensor and an electronic operating circuit. The ultrasonic temperature sensor comprises an acoustic waveguide, a second acou... | 03/17/1987 |
| 4646680 | Crucible for use in molecular beam epitaxial processing A crucible is disclosed for use in molecular beam epitaxial processing exhibiting low flux transient behavior as shutters of individual furnaces are opened to initiate the process and with excellent flux uniformity over the surface being processed and ove... | 03/03/1987 |
| 4643534 | Optical transmission filter for far field beam correction The present invention deals with an optical transmission filter for effecting differential phase delay upon light in a beam polarized in a P dimension, as a function of position within the filter aperture for far field correction. The filter employs two l... | 02/17/1987 |
| 4638190 | Digitally controlled wideband phase shifter A digitally controlled wideband phase shifter is disclosed in which an input signal is resolved into two quadrature related components, the components are scaled in a stepped digital manner in proportion to the sine and cosine of the phase shifting angle,... | 01/20/1987 |
| 4634384 | Head and/or eye tracked optically blended display system An area of interest display system of the type wherein area of interest imagery of relatively great detail and resolution is displayed in the spatial position of the foveal region of the eye of an observer and background imagery of relatively lesser detai... | 01/06/1987 |
| 4617531 | Directly modulated microwave oscillator having adjustable load coupling A directly modulated microwave source for use in communications equipment is disclosed. The arrangement, fabricated in an open ended waveguide comprises an oscillator section operating in the TE101 mode and an impedance matching section providi... | 10/14/1986 |
| 4617503 | Active datum for coordinate reference in a numerically controlled machine tool A datum is disclosed for use as a coordinate reference in a numerically controlled machine tool. The datum which is active, consists of an elongated member, typically one half wavelength in length, supported at its center (and antinode) by a plate, and in... | 10/14/1986 |
| 4612549 | Interference canceller loop having automatic nulling of the loop phase shift for use in a reception system The present invention relates to a reception system for radar and communications systems in which interference cancellation takes place in a correlation loop. In the present invention, automatic means are provided for digitally adjusting the phase shift a... | 09/16/1986 |
| 4612482 | Spatial pixel optimization technique The scan pattern of a raster scan video display system is modified to provide a sinusoidal raster scan, so that derived scan lines made up of pixels of adjacent scan lines are generated to enhance vertical scene resolution. A sinusoidal deflection circuit... | 09/16/1986 |
| 4608569 | Adaptive signal processor for interference cancellation The present invention relates to an adaptive signal processor for reducing interference in ranging and communication systems resulting from jamming or multipath reception. More particularly, an optical signal processor is provided in which a first time co... | 08/26/1986 |
| 4607394 | Single balanced planar mixer A single balanced planar mixer is disclosed suitable for use in the reception of electromagnetic waves of extremely high frequencies including millimeter waves. The mixer may be combined with an antenna, the combination being particularly suitable for use... | 08/19/1986 |
| 4605912 | Continuously variable phase shifting element comprised of interdigitated electrode MESFET A bidirectional continuously variable phase shifting element is described for incorporation in a monolithic microwave integrated circuit (a circuit which combines both passive and active circuit elements). The preferred active device for use in the phase ... | 08/12/1986 |
| 4592610 | Printed circuit card frame assembly Elongated, one-piece molded plastic supports are affixed in vertically spaced relation to the front of a printed circuit card frame assembly backplane equipped with a plurality of card connector receptacles. Each support is formed having a forwardly facin... | 06/03/1986 |
| 4580165 | Graphic video overlay system providing stable computer graphics overlayed with video image A color graphic overlay system for providing high speed, high resolution color graphics display combined with a video image from a videodisc, videotape or camera. The system includes a video mixing module and a color graphics module which generates the gr... | 04/01/1986 |
| 4575849 | Optical filter polarizer combination and laser apparatus incorporating this combination The present invention deals with an optical filter polarizer combination providing a spacial transmission function to polarized incident light. When the light is in the form of a beam the combination may be used to reject extraneous light, or to modify th... | 03/11/1986 |
| 4563383 | Direct bond copper ceramic substrate for electronic applications A thin, direct bond copper ceramic substrate of high strength and good thermal conductivity and suitable for high temperature thick film processing is described. It comprises two outer layers of alumina of equal thickness and matching dimensions for bendi... | 01/07/1986 |
