Abstract: 1. In a radiant energy tracking device sensitive to radiation of scanned targets the combination of;Optical focusing means having an optical axis for receiving modulated signal pulses reflected from a target and forming a target image at a focal point,Means for nutating said image in the focal plane about said optical axis,Detector means comprising four surfaces, each surface occupying a quadrant in the circle encompassed by said image as it nutates about said optical axis,Said detector means providing an output pulse for each of said quadrants, the pulse width being indicative of the duration of said target image on each said surface, andSumming means responsive to said output signals for providing signals proportional to the deviation of said target from said optical axis.

Abstract: Germanium devices such as diodes, transistors and photodetectors are passivated by coating their surfaces with phosphosilicate glass. In the case of photosensitive devices the thickness of the passivating glass can be controlled to also provide antireflective coating action.

Abstract: A rechargeable electrochemical cell is disclosed which includes both a cathode and a gas generating and consuming anode housed within a closed container. A storage volume is provided within the container for storing the gas used by the cell. A capillary mat lining material is provided throughout the gas storage volume of the cell. This lining material is in liquid transfer contact with a separator and electrolyte storage material located between the electrodes of the cell. If any electrolyte (i.e. water) of the cell is vaporized into the gas storage volume, the electrolyte will condense on the lining material and be conducted back to the separator and electrolyte storage material positioned between the electrodes.

Abstract: A rechargeable electrochemical cell is disclosed which includes both a cathode and a gas generating and consuming anode housed within a closed container. A closed volume is provided within the container for storing the gas used by the cell. A separator and electrolyte storage material is located between the electrodes of the cell. A reservoir is formed of a material capable of storing electrolyte. This reservoir is in liquid transfer contact with the separator and electrolyte storage material between the electrodes. If any electrolyte of the cell stored in the separator and electrolyte storage material is vaporized into the gas storage volume, such electrolyte is replaced by transfer of electrolyte from the reservoir to the separator and electrolyte storage material.

Abstract: A form of printed wiring antenna with integral transmission feed line is disclosed and a passive repeater using the antenna is shown printed onto a single printed wiring card. An array of such cards can be fabricated into a radiant energy lens. The character of the lens is determined by the physical dimensions of the printed wiring cards and the electrical length of the printed transmission lines.

Abstract: A broad band radiant energy beam is passed through a sample region that contains particulate matter. The emergent beam is applied to a plurality of photodetectors, each one of which is made responsive to a different narrow band portion of the beam. The thus obtained electrical signals are applied to a computer which is programmed to process the electrical signals and read out either the size distribution parameters or the mass concentration of the particles in the beam.

Abstract: 1.

Abstract: In a magnetically deflected cathode ray tube (CRT) display, the deflection coil is connected in series with two separate amplifiers. The first amplifier provides the main deflection current and is designed for high efficiency. The second amplifier is a linear device having relatively low efficiency and is made capable of supplying only a fraction of the output of the first amplifier. The linear amplifier is provided with deflection correction signals so that it modulates the deflection of the CRT in a desired manner. The correction signals can produce sweep linearization, convergence correction and raster shape control.

Abstract: When voltage variable capacitor (VVC) diodes are used to tune the r-f circuits of receivers, a potentiometer is usually used as the mechanically operated source of variable voltage. To avoid tuning problems associated with power line variations, or receiver circuit conditions that cause voltage variations, a well regulated source of d-c voltage is used to supply the control circuits. The improvement disclosed here involves applying an automatic frequency control (AFC) voltage, also known as automatic fine tuning (AFT) voltage, to the control circuit of the voltage regulator. Since the tuning voltages are obtained from the regulated source, the magnitude of regulated voltage will be controlled by the AFC voltage. If the polarity of AFC action is set to minimize the AFC error voltage, automatic frequency control or fine tuning is achieved.

Abstract: A digital linear phase shift convolutional filter for filtering a series of binary number electrical signals each of which represents the magnitude of a sample of an analog electrical signal sampled at a predetermined rate. The convolutional filter utilizes a bidirectional shift register and a preferably unidirectional shift register. Each of the registers has a plurality of stages. The bidirectional shift register receives the serially presented binary number electrical signals representative of the sample magnitudes, and these samples are sequentially transferred from the output stage of the bidirectional shift register to the input stage of the unidirectional shift register.

Abstract: In a high efficiency amplifier system a Traveling-Wave Tube (TWT) power amplifier is driven to saturated output by a second TWT (driver TWT) which is preferably but not necessarily operated at saturation. Broad band operation, over two octaves, is achieved by harmonic conditioning. In addition to the usual phase shifter harmonic conditioner, an interstage equalizer and an input equalizer are added. The attenuation vs. frequency characteristic of each of these two equalizers is properly proportioned to cause the driver TWT to develop a specific desired ratio between harmonic amplitude and fundamental amplitude output at each frequency. When a specific driver and power amplifier TWT were operated in a laboratory test and the two equalizers were adjusted for optimum fundamental output power, the interstage equalizer had maximum attenuation at the second harmonic frequency (relative to the low frequency end of the operating band) and the input equalizer had maximum attenuation at the third harmonic frequency.

Abstract: 1. A radar detection system comprising means for generating time spaced pulses of high frequency energy, said pulses having a width equal to a/nf.sub.r, where a and n are integers and f.sub.r is the pulse repetition frequency, means for projecting said energy pulses into space, receiver means for receiving target reflected echoes of said projected pulses, said receiver means including a heterodyne mixer, a bandpass circuit connected to the output of said heterodyne mixer, and means for supplying received echo signals to said mixer, means for supplying pulses corresponding to said generated pulses in pulse repetition frequency, pulse width and frequency to said heterodyne mixer as a local oscillator signal, said bandpass circuit having a passband centered at the frequency nf.sub.r, the width of said passband being not greater than f.sub.r.

Abstract: Devices fabricated from certain compound semiconductors of the group IV-VI series are provided with optically transparent coatings of barium fluoride, calcium fluoride, or strontium fluoride. These coating materials are insulators, chemically and electrically inert to the semiconductors, easily applied, and mechanically compatible thus making excellent protective coatings. In addition the coatings can act as diffusion masks in device fabrication thus enhancing planar device processing.

Abstract: Two photoelectric detector elements, having substantially different response wavelengths, are mounted in a housing in cascade relationship. The outer element is selected to be transparent to the response wavelength of the inner element and it is provided with an integral filter that is transmissive at the response wavelength of the inner element. Anti-reflective coatings are used to minimize reflective losses.

Abstract: A three-port transducer has as a first port a waveguide capable of supporting transverse electric waves of any polarization. The waveguide is divided into three sections by means of a pair of tapered septums which taper in opposing directions. The width of the inner section of the three is made equal to the combined widths of the other two and is coupled to a rectangular waveguide which comprises a second transducer port. The two outer sections are coupled together to a second rectangular waveguide which comprises a third transducer port. The polarization of a signal applied to the first port will determine the amplitude and phase of the signals at the second and third ports.

Abstract: A tapered septum in a square waveguide transduces it into a pair of rectangular waveguides. The output waveguides will be excited as a function of the polarization of the signals present in the square waveguide. The septum has a special shape that includes a tapered portion and a transverse portion proportioned to maximize the transducer bandwidth and minimize reflected power.

Abstract: A universally adjustable bracket structure for supporting a television receiver cabinet to accommodate viewing. The loop portion of a generally U-shaped bracket is provided with a swivel mount for a television receiver cabinet. A cube-shaped block is releasably retained between the leg portions of the bracket, and an adjustable clamp is mounted on the block for clamping of the bracket on ledge support structure that extends horizontally or vertically. Appropriate disposition of the clamp, in accommodation of viewing, is afforded by adjustability of the cube relative to the U-shaped bracket, or of portions of the clamp relative to the block.

Abstract: In a scanned multiple image display device a plurality of individual projectors produces a single composite image by optically combining individual projector outputs. The individual images must be converged with each other to produce an acceptable display. A digital computer is used to generate and store words that correspond to the required convergence correction for individual projectors. The stored words are read out of the computer in accordance with projector scanning timing and, after being converted to analog form, are used to correct the scanning to produce convergence.

Abstract: A differential amplifier having very high common mode rejection is shown. In its simple form four transistors and three constant current sources are connected into a balanced configuration. Balance is automatic so that special component selection is not required.

Abstract: When a conventional printed wiring board is subjected to a harsh environment, leakage can develop between adjacent conductors over a period of time. If high impedance circuits are employed on the board, such leakage can adversely affect circuit performance. The effect of such leakage can be minimized if the circuit layout is so arranged that potentially troublesome leakage occurs only to elements that operate at comparable operating potentials. In one embodiment of the invention, a circuit is shown having a high impedance point on a printed wiring board intended for an automotive application. The high impedance wiring conductor is completely surrounded by a metal conductor that is connected to a potential point in the circuit that approximates the potential at which the high impedance point will operate. When the automotive environment results in surface leakage, there will be very little change in the operational character of the high impedance circuit.