Abstract: A method is disclosed for electroforming metal screen. The method deposits photoresist over a mandrel, and then exposes the photoresist with light through a plurality of openings in a photo tool to form hardened resist pillars. Unexposed photoresist is removed without affecting the resist pillars. The method then electroforms the metal screen in areas free of the hardened resist pillars such that the metal screen forms apertures defined by each of the resist pillars, a space between at least two of the resist pillars defining a support bar that forms at a reduced thickness as compared to portions of the metal screen that are not between the resist pillars. Finally, the method detaches the metal screen from the mandrel.

Abstract: A method is disclosed for electroforming metal screen. The method deposits photoresist over a mandrel, and then exposes the photoresist with light through a plurality of openings in a photo tool to form hardened resist pillars. Unexposed photoresist is removed without affecting the resist pillars. The method then electroforms the metal screen in areas free of the hardened resist pillars such that the metal screen forms apertures defined by each of the resist pillars, a space between at least two of the resist pillars defining a support bar that forms at a reduced thickness as compared to portions of the metal screen that are not between the resist pillars. Finally, the method detaches the metal screen from the mandrel.

Abstract: Water purification and recycling system that generates electricity and has a large reservoir and a small reservoir that provides potable water to a water user structure. After use by the water user structure, wastewater is applied from said water user structure via at least one wastewater path to wastewater treatment apparatus. The wastewater treatment apparatus receives and processes the wastewater using a power plant that operates continuously to produce steam. The wastewater treatment apparatus is also powered by a co-adjuvant gas turbine generator is adapted to generate supplemental steam for the power plant.

Abstract: Water purification and recycling system that generates electricity and has a large reservoir and a small reservoir that provides potable water to a water user structure. After use by the water user structure, wastewater is applied from said water user structure via at least one wastewater path to wastewater treatment apparatus. The wastewater treatment apparatus receives and processes the wastewater using a power plant that operates continuously to produce steam. The wastewater treatment apparatus is also powered by a co-adjuvant gas turbine generator is adapted to generate supplemental steam for the power plant.

Abstract: Water purification and recycling system having a large reservoir and a small reservoir adapted to provide potable water to a water user structure. After use by the water user structure, wastewater is applied from said water user structure via at least one wastewater path to wastewater treatment apparatus. The wastewater treatment apparatus receives and processes the wastewater using a coal free power plant that operates continuously to produce steam. The wastewater treatment apparatus is also powered by a co-adjuvant gas turbine generator is adapted to generate supplemental steam for the coal free power plant.

Abstract: Reducing the peak-to-average power ratio of a signal comprises receiving the input signal, where the input signal is associated with at least one unacceptable frequency range. The input signal is clipped about an amplitude range to yield a clipped signal and clipped information, where the clipped information represents intermodulation products. The clipped information is filtered to yield an error signal. The error signal represents a subset of the intermodulation products, where an intermodulation product of the subset corresponds to the unacceptable frequency range. The error signal is subtracted from the input signal to yield an output signal.

Abstract: A differential mode inductor includes a first inductor lead that receives a current. A first arm receives the current from the first inductor lead. A center tap receives the current from the first arm. A second arm receives the current from the center tap. The second arm is substantially parallel to the first arm. The current in the first arm flows in the same direction as the current in the second arm. A second inductor receives the current from the second arm.

Abstract: A differential mode inductor includes a first inductor lead that receives a current. A first arm receives the current from the first inductor lead. A center tap receives the current from the first arm. A second arm receives the current from the center tap. The second arm is substantially parallel to the first arm. The current in the first arm flows in the same direction as the current in the second arm. A second inductor receives the current from the second arm.

Abstract: A stencil comprising two or more layers is disclosed for applying surface mount materials onto printed circuit boards, flexible circuits, wafers or other substrates. The stencil can accommodate preexisting surface mount components and materials. The stencil utilizes material reservoirs, relief areas and delivery apertures and can be used for depositing surface mount materials such as adhesives, conductive glues, solder paste and solder balls.

Abstract: A stencil comprising two or more layers is disclosed for applying surface mount materials onto printed circuit boards, flexible circuits, wafers or other substrates. The stencil can accommodate preexisting surface mount components and materials. The stencil utilizes material reservoirs, relief areas and delivery apertures and can be used for depositing surface mount materials such as adhesives, conductive glues, solder paste and solder balls.

Abstract: A squeegee blade comprising a base metal core coated with titanium nitride. Preferably, the blade also comprises a nickel coating between the base metal and the titanium nitride. The core blade is provided with an edge with a desired radius of curvature by chemical milling, and then the whole blade is chemically polished or electropolished and optionally nickel plated to produce a very smooth finish. The blade is then coated with titanium nitride to produce a blade with an extremely hard, low-friction surface. A squeegee incorporating the blade can be used, for example, for screen printing solder paste, conductive epoxy, or the like onto printed circuit boards.

Abstract: A mutual coupling neutralizer for neutralizing adverse mutual coupling between a pair of patch antennas for mobile communication system. The coupling neutralizer includes a first and second capacitor each having a first end and a second end, where the first ends are coupled to a respective patch antenna. The neutralizer further includes a high impedance transmission line connected to the second ends of the capacitors. The transmission line and capacitors are sized and configured to neutralize adverse mutual coupling between the pair of patch antennas over a predetermined frequency band. The neutralization of mutual coupling is achieved by extracting a signal present at one patch antenna and injecting the signal at the other patch antenna at a substantially equal amplitude and opposite in phase.

Abstract: A stripline directional coupler having a quarter-wave transmission line added either between the isolation port of the coupler and the termination impedance or between the input port of the coupler and the signal input reduces the degradation of coupler directivity caused by impedance mismatch of the transmission lines with the source, load and/or termination impedances. With the transmission lines and additional quarter-wave transmission line formed on the same substrate material, coupler directivity is insensitive to the value of the characteristic impedance of the transmission lines. This allows the use of less expensive substrate materials and manufacturing processes during stripline directional coupler construction.

Abstract: A flat form gas discharge lamp is disclosed which includes glass front and back plates mounted together and in which the front plate is formed with a plurality of channels which are sealed to confine an ionizable medium. The channels are oriented in parallel relationship and are separated by gaps. Optical means is placed in the gaps for intercepting secondary light which is transmitted laterally from side walls of the channels and redirected toward the front of the lamp. Secondary light in combination with the primary transmitted through front walls of the channels provides illumination across an area with optimum brightness uniformity and efficiency.

Abstract: A high power RF resistor for use, for example, as an isolation resistor in an RF hybrid splitter/combiner is formed on a thermally conductive substrate. A first insulating beryllia (BeO) layer extends over the substrate and has a top surface and a bottom surface. A first metallization layer extends over the top surface of the first insulating layer and includes a longitudinally-extending gap. A second insulating BeO layer is positioned above the first insulating layer and includes a top surface, a bottom surface and first and second side surfaces. A second metallization layer surrounds the bottom surface and the first and second side surfaces of the second insulating layer and has a longitudinally-extending gap, the gap in the second metallization layer positioned to be in alignment with the gap in the first metallization layer. This structure forms a Faraday shield between the resistive layer and ground to thereby reduce the I.sup.

Abstract: A method for suppressing the objectionable visual flash associated with replacing patterns in a "plasma-charge-transfer" shift mechanism type AC plasma shift display panel. During the erase mode, the load mode, or both, the phase voltage repetition rate is reduced until the time average luminous flux is substantially below the level of human perception in a room ambient light background. Upon entry into the hold mode, the phase voltage repetition rate reverts to a high frequency. The rapid rate generates patterns in the display panel which have a time average luminous flux adequate for viewing in the ambient light background. The visual flash is thereby suppressed without degrading the normal display characteristics of the panel.

Abstract: The room temperature controller of the present invention is adapted for use in a room in which the temperature is controlled by a thermostat coupled to an air conditioner unit. The room temperature controller includes a detector positioned within the room for detecting from a distance the presence of an occupant within the room. A logic and control circuit is coupled to the output of the detector and to the thermostat. The logic and control circuit modifies the normal operation of the thermostat when an occupant is not detected within the room to reduce unnecessary heating and cooling expenses. This circuit also enables the thermostat to operate normally for timed intervals when an occupant is detected within the room.

Abstract: A pair of electrodes perform both input and keep-alive functions in a plasma charge transfer device. The input-keep alive electrodes are formed on opposite walls of the device adjacent an array of transfer electrodes and are capacitively coupled to the ionization gas. (1) Repetitive and (2) selective voltage pulses are multiplexed to the input-keep alive electrodes and snychronized with transfer electrode pulsing, to provide (1) a keep-alive function and (2) the selective input of data to the charge transfer device. The erase electrodes may also be capacitively coupled to the gas. A pulsing technique is described for restoring charge neutrality to the input-keep alive electrodes and erase electrodes after each input or erase function.

Abstract: A plasma discharge display device including at least one channel defined between opposing walls and containing an ionizable medium. Electrodes are employed for the application of potential differences whereby the medium will emit light proximate the electrodes. The electrodes include first and second AC electrodes on opposite wall surfaces, and third and fourth electrodes for developing a DC discharge in the vicinity of the first and second AC electrodes. The channel is divided into individual cells by means of insulating walls, and the DC discharge serves to prime individual cells, this discharge being developed at succeeding cells. The potential differences achieved by the AC electrodes across a given cell are selectively imparted whereby a primed cell can be caused to emit light. Thereafter, continued operation of the AC electrodes will maintain the light emission in the selected cells to provide a continuous display.

Abstract: A plasma charge display device having a channel containing an ionizable medium with the channel defining an endless length as in the case of a circular channel. At least one input electrode is located in a first position, and transfer electrodes extend away from the input electrode on opposite sides thereof completely along the length of the channel. Gas ionization results in the formation and shifting of light emitting areas in either direction relative to the position of the input electrode. The transfer electrode positions are related to the input electrode position in a manner such that the light emitting areas can be shifted through the position of the input electrode from one side to the other thereof.