Abstract: A relatively high speed analog-to-digital converter is a charged coupled ice preferably formed as a metal-oxide semiconductor integrated circuit. It includes a pair of potential charge packet wells, an electrode gate to control the transfer of charge packets in a seesaw manner between the two wells, electrode gates to control the dissipation of charges from the wells to sinks, electrode gates to control the input of a charge representing an analog signal to one of the wells, electrode gates to control the detection of charge packets, a clock and a logic control to operate the electrode gates in a predetermined sequence.

Abstract: An electronic detection system for detecting intruders employs a transmission line as a sensing element. The transmission line is positioned about the perimeter of the area to be protected. An antenna applies pulsed RF energy to the line. An intruder in the field of the line causes an RF reflection back toward the source, which reflection may be detected by Doppler range-gating techniques.

Abstract: A microstrip antenna design according to which a plurality of resonant frencies can be obtained for a given size radiator, to increase the usefulness of the antenna by providing for frequency diversity operation and by making the microstrip antenna tunable over a range of frequencies. As will be seen, the microstrip antenna is provided with an output termination which can be open-circuited or short-circuited, and at varying lengths, to change the frequency at which the microstrip antenna can be made resonant.

Abstract: A Schottky diode, whose forward voltage is 0.4 volts is connected between e load and one input of the sense amplifier, which has a minimum operating voltage of 0.6 volts. When the load becomes short circuited or drops to a very low resistance, the Schottky diode conducts to shut down the sense amplifier, which cuts off the series pass transistor. When the load resistance rises to a predetermined value, the Schottky diode becomes reverse biased, permitting the regulator to return to its normal regulation operation.

Abstract: An electro-optical system for determining the polarization state of optical pulses of nanosecond durations such as produced by lasers. This is achieved by using a six element optical polarizer assembly positioned in front of a six element optical detector assembly. The respective outputs of the six detectors are fed in predetermined arrangement to a plurality of operational amplifiers which are adapted to provide the sum/difference of the detector outputs for providing the Stokes parameters of an optical pulse incident thereto.

Abstract: A metal oxide threshold switch (MOTS, e.g., NbOx, x preferably fractionally ess than 2) series connected is used to sharpen the pulse rise to about one or less nanosecond, with a peak up to several kilovolts, and up to 100 amperes or more.

Abstract: A metal oxide threshold switch (MOTS, e.g., NbO.sub.x, x preferably fractally less than 2) series connected is used to sharpen the pulse rise to about one nanosecond, with a peak of thousands of volts, and up to 100 amperes or more. A trigger pulse is used to further sharpen the pulse and reduce jitter.

Abstract: A means for producing uniform discharges in carbon dioxide (CO.sub.2) transversely excited atmospheric (TEA) lasers by the utilization of a fine wire as the central (cathode) electrode coaxially disposed in a cylindrical outer (anode) electrode having a diameter selectively chosen to provide a large ratio of outer to inner electrode radii which as a consequence produces a radial gain profile which is well localized in the center of the discharge tube and accordingly allows for efficient matching of low order stable optical modes to the active gain region while providing a high degree of mode selectivity in favor of these modes.

Abstract: A truss assembly having one end detachably connected to the fifth wheel of a tractor, the opposite end of the truss being detachably connected to one end of a cargo to be transported, the opposite end of the cargo being detachably connected to a dolly, the dolly and truss assembly being connectable when the transported load has been removed therefrom.

Abstract: The configuration consists of two antennae on the same mast. The upper anna is a ground plane capable of two frequency bands of operation. The lower antenna comprises a sleeve and radial elements.The upper antenna consists of four radials 36" long and an upper element. The two bands of operation covered by the upper antenna are 80 MHz and 150 MHz. Band selection is accomplished by selection of the correct upper mast element. This element is removable. A 34" long element is used for 80 MHz operation and a 14" long element for 150 MHz operation. This antenna is nondirectional and is used for transmitting.The lower antenna consists of four radials 22" long and an upper and lower sleeve. The radials are insulated from the mast and connected to the center conductor of the coax. The upper sleeve is a portion of this antenna and also isolates the antenna from the mast. The only use of the lower sleeve is to provide isolation of the antenna from the mast and coaxial cable.

Abstract: A photo-reconnaissance/surveillance system in which the landscape to be sned is photographed on color film. The film is then developed in a highspeed processor and scanned by photosensors. Illuminations for the sensors is provided by a plurality of point sources of light. Colored filters e.g., a green filter and a blue filter, are alternately interposed between the light sources and the film. A logic circuit compares the transmission through the film for both light conditions and, thus, can detect the presence of a target, if the color signature of the target is known a priori.

Abstract: A parabolic reflector is fed by a microstrip antenna supported at the focus y a tube aligned along the focal axis of the reflector.The invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment of any royalties thereon or therefor.

Abstract: A microstrip antenna design according to which the impedance matching transformer is contained in the area usually occupied entirely by the etched metal radiator.

Abstract: A thermoelectric generator is equipped with a protective device which upon overload conditions disconnects a primary load, such as a rechargeable battery, in order to protect the secondary load, i.e., the burner, fuel pump and other ancillary items necessary to operate the thermoelectric generator. The protective device includes a voltage selectable breakdown diode, a transistor switch, a relay whose coil is connected to the transistor switch and preferably an anti-clatter circuit.

Abstract: A CW waveguide channel gas laser constructed from boron nitride which due its high thermal conductivity and extremely low thermal expansivity provides increased frequency stability.

Abstract: A multi-director parasitic array attached at the center of a microstrip anna design to provide a simple, low cost, efficient feed.

Abstract: At least two metal oxide switch devices sandwiched together with each dev consisting of polycrystalline refractory transition metal oxide such as NbO.sub.2 formed on a conducting refractory substrate such as single crystal NbO. The polycrystalline layers on opposing outer faces of the sandwich are removed and electrical contacts made thereto. The mutually contiguous polycrystalline surfaces form an active interface where switching is adapted to take place.

Abstract: A phase front homing system airborne antenna array which employs portions the airframe as two antenna elements and wherein each antenna element includes a coaxial sleeve coupler.

Abstract: A center-fed VHF dipole antenna structure particularly adapted for 30-80MHz peration wherein one half of the radiating structure comprises the outer conductor of a coaxial feedline which includes a low-loss cable choke at the lower end of the half dipole length of the feedline while the other half of the dipole consists of a conventional radiating conductor element. Additionally, remotely controlled variable impedance elements are included at the feedpoint to provide selective coarse and fine tuning of antenna resonance.

Abstract: Dual phase lock loops are used to provide a rapid switching, low power, low purious and fine resolution frequency synthesizer for various radio applications. The first phase lock loop provides for coarse frequency adjustment, and the second phase lock loop includes an arithmetic synthesizer for fine resolution.