Abstract: Diamond is used as a dielectric layer to separate the metalization layers multichip module substrates. The diamond has use for both electrical and thermal conduction. Such multichip module substrates may have a diamond base, or a base constructed from silicon, aluminum nitride, molybdenum, or any other material supportive of the nucleation and growth of diamond films. The metalization may be molybdenum or other conductor supportive of the nucleation and growth of diamond films. Using diamond as an interlayer dielectric in a multichip system permits a significant increase in the amount of power that can be dissipated by the system. The diamond does not obstruct the system's metalization, so that routing density can be increased and interconnection length may be decreased, enhancing host chip operation.

Abstract: A cable fairing preferably for an underwater cable is formed from regenerated cellulose sponge material. The fairing is attached to the cable while the material is in an expanded and dehydrated state. Once hydrated, the fairing may be compressed from a flexible state to a compacted state for storage of the cable. The fairing assumes its original streamline shape when again deployed in water.

Abstract: An apparatus and method for stabilizing laser light wavelength relative to resonant optical absorption works with both continuous wave and pulsed lasers and employs the phenomenon of Zeeman energy level splitting to provide a error signal indicative of both the direction and magnitude of wavelength error.A laser system including a wavelength adjusting means produces laser light at a wavelength which differs by an adjustable amount from a resonant absorption wavelength of a selected substance. A first portion of the laser light is propagated through a right circular polarizing means to provide right circularly polarized (RCP) laser light. RCP laser light is propagated through a first volume occupied by the selected substance, said first volume being disposed in a magnetic field. The magnetic field vector is substantially parallel to the direction of laser light propagation within the first volume.

Abstract: A method and circuit for performing coherent integration on a signal output rom a conventional signal processing circuit's detector/averager is presented. The post-processing coherent integrator is designed to be inserted in a conventional signal processing circuit between the detector/averager circuit and the threshold detector circuit.A digital form of the post processing coherent integrator comprises a sample-and-hold circuit to receive a signal output from the detector averager of the conventional signal processing circuit, an analog-to-digital converter, a delay and multiplier circuit, a memory circuit for storing weighting constants, a summer circuit, and an output to a conventional signal processing system's threshold detector and display.

Abstract: An etching process allows a selective single-step patterning of silicon devices in a noncorrosive environment. The etching of silicon relies on a maskless laser-assisted technique in a gaseous halocarbon ambient, such as the gaseous chlorofluorocarbons, dichlorodifluoromethane and chloropentafluoroethane. Laser-assisted photothermal chemical etching reactions on silicon occur in these ambients when the incident fluence from an excimer laser at 248 nm exceeds the melt threshold (approximately 0.75 J/cm.sup.2). When incident fluence exceeds the ablation threshold (approximately 2.2 J/cm.sup.2) an undesirable, increased surface roughness is observed. Etch rates as large as approximately 15 angstroms per pulse are attained within predetermined processing windows. This provides a means for thin membrane formation in silicon, rapid etches and processing of packaged devices or partially fabricated dies.

Abstract: A method for fabricating low leakage current bipolar junction transistors of silicon-on-sapphire for efficient use in operational amplifiers utilizes all implant technology, improved silicon conditioning processing, and low temperature annealing.

Abstract: A spatial combiner for connection to a receiver used in conjunction with a lurality of direction-sensitive antennas for receiving a spread-spectrum communication signal in the presence of interference includes a steering network, a plurality of normalizers, and a plurality of combiners. The steering network combines N inputs from N antennas and produces outputs J.sub.1, J.sub.2, . . . , J.sub.M, with M being a multiple of K and K a positive integer such that each M output is a weighted sum of N inputs from the antennas. The normalizers receive and normalize the M outputs to unit energy and produce normalized outputs J .sub.1, J .sub.2, . . . , J .sub.M. The combiners receive normalized outputs and sum the first K outputs to produce output C.sub.1, sum the next K outputs to produce output C.sub.2, and continuing summing outputs in the same manner until summing the last K outputs occurs to produce output C.sub.M/K. The outputs C.sub.1 through C.sub.

Abstract: A hybrid orthogonal transverse electromagnetic fed reflector antenna is dlosed which comprises an electromagnetic reflector; a transverse electromagnetic transmission carrier which includes a first electrically conductive strut having a first electrical impedance which is mounted in electrical contact with the reflector, and a second electrically conductive strut having a second electrical impedance substantially equal to the first electrical impedance, and which is mounted in electrical contact with the reflector; and a transverse electromagnetic feed having a first electrical conductor mounted in electrical contact with the first strut, and a second electrical conductor electrically isolated from the first electrical conductor and electrically coupled to the second strut.

Abstract: A flextensional transducer includes a stack of driving elements disposed ng a linear axis to convert a driving power into vibrational energy. End pieces, disposed at each end of the stack, have outwardly facing arcuate surfaces. A flexural shell, formed into a loop, is disposed to circumscribe the stack and the end pieces to present an elliptical cross-section with the major axis thereof being generally coincident with the stack's linear axis. The shell is reactively coupled to the end pieces at the outwardly facing arcuate surfaces. A pliant assembly is positioned between each end piece and the flexural shell for maintaining conformal engagement between portions of the end pieces and the flexural shell. The pliant assembly is designer such that its stiffness may be adjusted.

Abstract: A digital recording system contained in each video frame in memory at a we rate equal to that of a video imager from which the system receives the information. The system then outputs the information from memory to a recorder at a read rate which can be below the write rate and maximum recorder rate. The system outputs information from memory at the lower read rate by skipping a specific number of entire video frames and outputting the video frames between those skipped. The read rate is selected so that it provides a continuous stream of data to the recorder with only short gaps between video fields.

Abstract: A method is provided for manufacturing a bipolar transistor, comprising the teps of: 1) abutting a polished surface of a substantially single crystal silicon wafer with a polished surface of an insulating substrate; 2) heating the abutting silicon wafer and insulating substrate at about 200.degree. C. for about 30 minutes to form a bonded wafer having a silicon layer; 3) forming a silicon island from the silicon layer; 4) ion implanting a first dopant species having a first conductivity into the silicon island to form a base region in the silicon island; 5) ion implanting a second dopant species having a second conductivity opposite the first conductivity into the silicon island to form an emitter region and a collector region in the silicon island; 6) ion implanting a third dopant species having the first conductivity into the base region of the silicon island; 7) heating the bonded wafer at a temperature of about 800.degree. C.

Abstract: A method to decompose chlorofluorocarbons gases (CFCs) enables the conventional disposal of their by-products. It employs photodecomposition of the CFC gas using UV light and a mediating species to allow chemical reactions to occur which form an effluent which is hydrolyzed by conventional methods.

Abstract: A metallic housing encloses a suspended substrate circuit and is arranged so that the waveguide input/output port within the housing has double-ridge transitions to the suspended substrate circuit.

Abstract: An etching process allows a selective single-step patterning of III-V or II-VI semiconductor compound devices such as GaAs and InP or CdS and ZnSe in a noncorrosive environment. The etching relies on a maskless laser-assisted technique in a gaseous chlorofluorocarbon ambient, such as gaseous dichlorodifluoromethane and chloropentafluoroethane. Laser-assisted photothermal chemical etching reactions on the III-V or II-VI semiconductor compounds occur in these ambients when the incident fluence from an excimer laser at 248 nm exceeds the melt threshold. This provides a means for thin membrane formation in III-V or II-VI semiconductor compounds, rapid etches and processing of packaged devices or partially fabricated dies. The reduction in processing steps as compared to conventional wet chemical etches provides improvements in yield, reliability and cost.

Abstract: A turbulent flow injector includes a ceramic injector body having an outer ylindrical wall with an inner surface, an inner cylindrical wall having an inner surface, an end wall at an outlet end of the body terminating the outer and inner walls so as to define an annular cavity between the inner and outer walls. The annular cavity is open at an inlet end of the body. A duct, defined by the inner surface of the inner wall, has an inlet at the inlet end of the body. A heat conductive insert is positioned within the annular cavity and has an outer surface in thermal contact with the inner surface of the outer wall. The insert has an external section extending beyond the inlet end of the body and cooling fins extending from the external section. An annular air chamber is defined between the insert and the inner wall of the body.

Abstract: A long sequence correlation coprocessor LSCC accelerates the bitwise corrtion of arbitrarily long digital sequences by calculating in parallel the correlation score for 16, for example, adjacent bit alignments between two binary sequences. The LSCC integrated circuit is incorporated into a computer system with memory storage buffers and a separate general purpose computer processor which serves as its controller. Each of the LSCC's set of sequential counters simultaneously tallies a separate correlation coefficient. During each LSCC clock cycle, counter enable logic associated with each counter compares one bit of a first sequence with one bit of a second sequence to increment the counter if the bits are the same. A shift register assures that the same bit of the first sequence is simultaneously compared to different bits of the second sequence to simultaneously calculate the correlation coefficient by the different counters to represent different alignments of the two sequences.

Abstract: A storm water runoff first flush sampler is provided which includes at le one container which has a top and a bottom. A water collection device is also provided which has an inlet end for collecting water and an outlet end for discharging the collected water. The inlet end of the water collection device is located above the top of the container, and the outlet end of the water collection device opens into the container for filling the container with water. A device is also provided for venting air from the container as it is filled with water and discharging the vented air at a level above the top of the water collection device. This arrangement enables automatic termination of gravity flow to the container when water reaches the level of the water collection device.

Abstract: An etching process allows a selective single-step patterning of silicon devices in a noncorrosive environment. The etching of silicon relies on a maskless laser-assisted technique in a gaseous halocarbon ambient, such as the gaseous chlorofluorocarbons, dichlorodifluoromethane and chloropentafluoroethane. Laser-assisted photothermal chemical etching reactions on silicon occur in these ambients when the incident fluence from an excimer laser at 248 nm exceeds the melt threshold (approximately 0.75 J/cm.sup.2). When incident fluence exceeds the ablation threshold (approximately 2.2 J/cm.sup.2) an undesirable, increased surface roughness is observed. Etch rates as large as approximately 15 angstroms per pulse are attained within predetermined processing windows. This provides a means for thin membrane formation in silicon, rapid etches and processing of packaged devices or partially fabricated dies.

Abstract: An underwater sensing system has a trunk cable that transmits a plurality clock signals from its first end to its second end. A plurality of signal handling nodes are installed successively along the trunk cable in a spaced apart relationship. Each of a plurality of linear sensor arrays extend from one signal handling node. Each sensor in the sensor arrays receives the clock signals and generates a data output signal in response thereto at specifically ordered time sampled intervals based on a count of the clock signals. The data output signals are transmitted to the one signal handling node associated with the sensor array. At each of the signal handling nodes, a multiplexer interleaves the data output signals received from its sensor array in a continual throughput, time-division multiplexed fashion with concatenated data output signals received from the next successive signal handling node located further from the first end of the trunk cable.

Abstract: The invention provides navigational aid for use on board remotely operated r autonomous underwater vehicles. A pulsed laser light signal is directed to the ocean bottom where it is reflected back to a tracking camera located on board the vehicle. The time required for the pulsed light signal to be detected by the camera provides the information from which an on board computer can compute the vehicle's altitude. The camera is range gated and synchronized with the laser. Successive images provided by the reflected laser light are correlated by an image processing program. A correlation function applied to the output of the image processing program provides data from which the computer can calculate the vehicle's movement. An electronic clock provides a time base that is input to the computer in order to derive the vehicle's velocity. Velocity and position data may then be made available for navigation and vehicle control.