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| Number | Title | Issue Date |
| 6440782 | Radiation-hard silicon cryo-CMOS process suitable for charge-coupled devices, and a device made according to this process A silicon-based radiation-hard cryo-CMOS CCD process suitable for fabrication of devices (100) with sub-micron feature sizes. A re-oxidized nitride/oxide (RONO) layer (49") is preserved in the CCD area (32) while plasma etching is used to define polysilic... | 08/27/2002 |
| 6252962 | Featureless covert communication system A system and method of providing featureless covert communication is described. After synchronization is achieved between a covert transmitter and a covert receiver using two channels, one of which is a transmitted reference signal, a single channel is us... | 06/26/2001 |
| 6155704 | Super-resolved full aperture scene synthesis using rotating strip aperture image measurements A spinning strip aperture imaging radiometer sensor system and data processing method for synthesizing a super-resolved scene estimate (super-resolved scene) from a plurality of image frames acquired by the strip aperture imaging sensor system. One embodi... | 12/05/2000 |
| 6140832 | Method of utilizing IDDQ tests to screen out defective parts A method that uses effective widths of NMOS and PMOS devices in a digital circuit and their intrinsic junction and subthreshold leakage currents to produce a specification for IDDQ, the range of IDDQ, and the delta of IDDQ between pre- and post-overvoltag... | 10/31/2000 |
| 6125339 | Automatic learning of belief functions A method providing automatic learning belief functions enabling the combination of different, and possibly contradictory information sources. The present invention provides the ability to determine erroneous information sources, inappropriate information ... | 09/26/2000 |
| 6118811 | Self-calibrating, self-correcting transceivers and methods A transceiver has a digital signal processor which can insert calibration signals of known level and frequency into transmitters for calibration and correction of transmitter parameters. An output of the calibrated and corrected transmitter is subsequentl... | 09/12/2000 |
| 6100775 | Vertical interconnect circuit for coplanar waveguides A transition circuit is useful for coupling a first coplanar waveguide and a second coplanar waveguide disposed either on opposite sides of the same substrate or on different substrates. The first coplanar waveguide has a first signal conductor and a firs... | 08/08/2000 |
| 6088678 | Process simulation technique using benefit-trade matrices to estimate schedule, cost, and risk A computer-implemented process simulation method or tool that uses a software engine that calculates resources required to complete a project based upon contents of user-defined benefit-trade matrices associated with substeps of the project and design req... | 07/11/2000 |
| 6078356 | Frequency multiplexed data from detector array A two-dimensional imaging system employs a multiplicity of radiation sensors disposed in an array of rows and columns. In order to couple signals from each of the sensors from an inaccessible location to an accessible location for processing of the sensor... | 06/20/2000 |
| 6072991 | Compact microwave terrestrial radio utilizing monolithic microwave integrated circuits An integrated point-to-point microwave radio frequency unit/antenna has a housing, a microwave antenna affixed to the front face of the housing, and a microwave radio frequency transceiver electronics package within the housing. The transceiver electronic... | 06/06/2000 |
| 6061608 | Precision dispensing process control An apparatus and method that precisely controls the amount of liquid dispensed from dispensing apparatus onto an article. The present invention controls the weight of the dispensed liquid by using a force transducer that precisely weighs the article and d... | 05/09/2000 |
| 6040731 | Differential pair gain control stage A "gain control differential pair" (GCDP) conducts current in response to a differential drive signal, with the gain of a signal path formed via the current circuit of one of its transistors controlled by the drive signal. The GCDP is preferably driven wi... | 03/21/2000 |
| 6034647 | Boxhorn array architecture using folded junctions An inverted boxhorn antenna array comprising a power divider that is constructed from a single metal piece and a flat metal sheet that is fastened to a rear surface of the power divider. The power divider is fabricated using a variety of waveguide junctio... | 03/07/2000 |
| 6018424 | Conformal window design with static and dynamic aberration correction A system for correcting optical aberration created by a conformal window has a conformal window (12) with an outer surface (26) and an inner surface (28). The inner surface (28) is an aspheric surface for compensating for higher order aberrations. An aber... | 01/25/2000 |
| 5998817 | High power prematched MMIC transistor with improved ground potential continuity A multicell transistor for use in a circuit has an input ground plane for an input waveguide and an output ground plane for an output waveguide. The multicell transistor includes a gate electrode coupled to the input waveguide, a drain electrode coupled t... | 12/07/1999 |
| 5998291 | Attachment method for assembly of high density multiple interconnect structures Method of fabricating high density multilayer interconnect structures or flexible HDMI decals. The methods secure a top surface of an HDMI decal fabricated on a rigid substrate to a protective film layer which is in turn adhesively secured to a flat carri... | 12/07/1999 |
| 5995535 | Rapid time and frequency acquistion of spread spectrum waveforms via ambiguity transform The present invention is a method of synchronizing a digital receiver to a digital transmitter in both frequency and time using a novel ambiguity transformation. The ambiguity transform combines time correlation and spectrum synchronization into an integr... | 11/30/1999 |
| 5990757 | Gallium arsenide monolithic microwave integrated circuits employing thermally bumped devices Flip chip monolithic microwave integrated circuits (MMIC) devices formed on gallium arsenide substrates and use thermally bumped diodes and field effect transistor devices to achieve improved heat dissipation and power protection. Flip chip limiter MMIC d... | 11/23/1999 |
| 5990815 | Monolithic circuit and method for adding a randomized dither signal to the fine quantizer element of a subranging analog-to digital converter (ADC) A dither circuit is monolitically integrated with a subranging ADC to add a dither signal at the input of the ADC's fine quantizer element to randomize its nonlinear quantization level errors. Because the subranging ADC has at least one overlap bit, the a... | 11/23/1999 |
| 5973631 | Test circuit and method of trimming a unary digital-to-analog converter (DAC) in a subranging analog-to-digital converter (ADC) In a subranging ADC, the unary DAC is trimmed by walking through its transfer function while toggling an offset cell at the input to the coarse quantizer and a reference cell in the DAC such that the reference cell is substituted for the cell under test o... | 10/26/1999 |
| 5963094 | Monolithic class AB shunt-shunt feedback CMOS low noise amplifier having self bias A monolithic class AB (push-pull) low noise amplifier having feedback and self bias. The low noise amplifier exhibits low power, high intercept point, low noise figure, well matched terminal impedances over wide range of frequency, and may be monolithical... | 10/05/1999 |
| 5960040 | Communication signal processors and methods A digital signal processor is provided which is compatible with a large variety of modulation processes (e.g., BPSK, QPSK,π/4 QPSK, M-ary FSK and M-ary PSK). The processor has a transmit section which can convert input data streams into baseband I and Q ... | 09/28/1999 |
| 5956293 | Flexural plate sound transducer having low resonant frequency In a preferred embodiment, a flexural plate sound transducer (150), including: a housing (152) having an open central volume (172); a flexural plate (154) attached around an inner surface of the housing (152) and extending across the central volume (172);... | 09/21/1999 |
| 5939967 | Ground plane isolation of planar inductors using a magnetic disk An approach that minimizes ground plane effects affecting planar inductors is disclosed. A magnetic disk is inserted between an inductor and a ground plane to isolate the magnetic field of the inductor and preserve its magnetic characteristics. The presen... | 08/17/1999 |
| 5926123 | Self calibration circuitry and algorithm for multipass analog to digital converter interstage gain correction Autocalibration circuitry and an algorithm (method) for aligning interstage gain within a high resolution multipass analog-to-digital converter. The interstage gain alignment technique maximizes the signal-to-noise ratio and spurious free dynamic range of... | 07/20/1999 |
| 5924021 | Frequency conversion circuit and method for millimeter wave radio A frequency upconversion circuit in a millimeter wave radio transmitter uses a low frequency synthesizer and a parallel frequency mixing and multiplication network for converting a low frequency signal to a millimeter wave radio frequency (RF) signal. A f... | 07/13/1999 |
| 5913159 | Adaptive pulse detector utilizing delayed input comparison An adaptive signal level detector. The inventive detector includes a first circuit for receiving an input signal and providing a second signal identical to said input signal and delayed relative thereto. The amplitude of the delayed signal is compared to ... | 06/15/1999 |
| 5910740 | Phase locked loop having memory A phase locked loop that enables highly precise tracking and phase locking of a synthesized clock signal to a reference clock signal. The phase locked loop has a memory that enables highly precise tracking and phase locking of a synthesized clock signal t... | 06/08/1999 |
| 5905639 | Three-dimensional component stacking using high density multichip interconnect decals and three-bond daisy-chained wedge bonds A three-dimensional circuit structure that interconnects an integrated circuit chip, along with additional active devices and passive components to a substrate by way of a high density multichip interconnect decal disposed on the integrated circuit chip. ... | 05/18/1999 |
| 5903323 | Full color sequential image projection system incorporating time modulated illumination A system and technique for directing intensity modulated electromagnetic energy. The inventive system (10) includes an intensity modulated source of electromagnetic energy (12). Individual elements (22) in an array of energy directing elements (15) are ac... | 05/11/1999 |
| 5879954 | Radiation-hard isoplanar cryo-CMOS process suitable for sub-micron devices A radiation-hard isoplanar cryo-CMOS process suitable for submicron device fabrication reduces channel length to submicron levels. A channel stop (52) is formed after a first polysilicon gate (50) is formed to reduce the space between a n-/n+ source/drain... | 03/09/1999 |
| 5877557 | Low temperature aluminum nitride A process for metallizing semiconductor devices is provided, wherein a plurality of aluminum contacts is formed. The plurality of aluminum contacts is at least partially nitrided in a nitrogen-containing plasma at a temperature of less than about 350° C.... | 03/02/1999 |
| 5870402 | Multiple user digital receiver apparatus and method with time division multiplexing A digital receiver apparatus and method, designed for multiple simultaneous users, digitizes a received analog RF signal and tunes to multiple desired frequencies of the received signal on a time division multiplexed basis. After filtering by a finite imp... | 02/09/1999 |
| 5864481 | Integrated, reconfigurable man-portable modular system There is described an integrated reconfigurable man-portable communication system, adapted particularly for use in military or law enforcement tactical situations, including a modular compact computer with mission oriented hardware and software which prov... | 01/26/1999 |
| 5864321 | Microwave terrestrial radio with dovetail attachment and reference plane The radio frequency unit of a millimeter wave terrestrial radio includes a housing with a front face and a back face, a microwave radio frequency transceiver electronics package within the housing, an antenna affixed to the front face of the housing, and ... | 01/26/1999 |
| 5861341 | Plated nickel-gold/dielectric interface for passivated MMICs A thin film (at least one atomic layer to about 400 Å) of nickel is electrolytically plated on top of electrolytically-plated gold electrodes in GaAs monolithic microwave integrated circuits (MMICs) without any additional photoresist masking step. The th... | 01/19/1999 |
| 5859568 | Temperature compensated amplifier An amplifier includes an amplifying circuit and bias current circuit. The bias current circuit includes a beta matching circuit which employs a temperature compensated current reference to develop a bias current for the amplifying circuit. The beta matchi... | 01/12/1999 |
| 5859558 | Low voltage analog front end A low voltage analog front end (AFE) includes a differential transistor pair which converts an input voltage, typically A.C.-coupled to the pair's control inputs, to a differential current. Impedance networks connected to each transistor's control input a... | 01/12/1999 |
| 5859569 | Current feedback differential amplifier clamp A current steering circuit diverts bias current from a differential current summing amplifier's front end when the differential input exceeds a safe threshold level, thus preventing the amplifier's output stage from being overdriven. Diverting the front e... | 01/12/1999 |
| 5859559 | Mixer structures with enhanced conversion gain and reduced spurious signals Mixer structures are described which include a current mirror for insertion of trickle currents to an input differential amplifier and an output interface for coupling an output differential amplifier to an output port. The current mirror trickle currents... | 01/12/1999 |
