Abstract: A microwave device including a half wave plate for a microwave power combiner, attenuator or variable coupler divider having a circular waveguide portion and a pair of cavities disposed opposite to one another and each coupled to a plurality of slots formed in a wall between said cavities and said circular waveguide. The half wave plate is used to obtain a phase shift in the signals provided to one end of the circular waveguide and is preferably mounted for rotary motion about the center axis of the circular waveguide.

Abstract: A microwave polarization converter for converting circular polarization to linear polarization or vice versa. The converter includes a fin and a shorting plate to effect such conversion.

Abstract: An improved navigational plotting system having convenient initialization and the ability to compute and superimpose hyperbolic time difference lines on a chart includes an X-Y plotter for plotting the position and course of a vessel on a navigational chart or a plain piece of paper, dictated by the reception of hyperbolic navigation signals. Ambiguity-free conversion to latitude and longitude is done automatically without the necessity of manually entering the initial latitude and longitude of the vessel. Remote initialization is established by placing the pen of the plotter on a known point or position on the chart and entering the latitude and longitude of this known position or its hyperbolic navigation coordinates, with all subsequent plot locations being referenced to this point on the chart. A set of default pre-stored conditions are utilized in the initialization procedure in which preset scale size and hyperbolic line parameters are assumed, with convenient override sequences being provided.

Abstract: A remote control fluid dispensing system is disclosed comprising a fluid dispenser and electrical pump means for pumping fluid from the dispenser at a dispensing station. Pulse generating means are provided at the dispensing station for generating DC pulses in metered response to the dispensing of fluid. Electrical to light energy transducer means and light to electrical energy transducer means electrically insulated from but optically coupled with the electrical to energy transducer means are provided at a control station. Electrical circuit means are further provided for coupling the pulse generating means with the electrical to light energy transducer means and for coupling the electrical pump means with a source of current at the control station. Display means are further provided at the control station coupled with the light to electrical energy transducer means for displaying metered dispensing of fluid information generated by the pulse generating means.

Abstract: An apparatus which includes an optical spinner having a surface rotatable about an axis that is substantially perpendicular to the surface at its point of intersection with the axis. A source of coherent radiation is directed toward the surface and a zone-type lens covering at least a portion of the surface is configured to receive the radiation and direct it toward a first scanning focal point locus. An auxiliary reflective means is disposed in the path of the directed radiation, the reflective means being shaped to redirect the radiation toward a second scanning focal point locus, such that the principal ray of the radiation is substantially perpendicular to the axis. In this manner, the problems generally encountered with non-normal impinging light bundles are overcome.

Abstract: In an Omega receiver a phase detection system operative on both rising and falling edges of a hard limited, received Omega signal to compensate for random noise and asymmetries in the hard limited signal.