General Dynamics

About: General Dynamics is a company organization based out in Fairfax, Virginia, United States. It is known for research contribution in the topics: Signal & Propellant. The organization has 5722 authors who have published 5819 publications receiving 85768 citations. The organization is also known as: GD & General Dynamics Corporation.

Bend-type fiber optic light injector

Abstract: An optical fiber is bent to form a discontinuous curve through which light can be injected into the fiber or extracted from the fiber. The bend can be formed by securing a portion of the optical fiber in a fixture and laterally displacing a portion of the fiber outside the fixture using a depressor. The depressor can be an integral part of the securing fixture or a separate device. The securing fixture can be adjustable so that the degree and location of the bend can be varied. Injected light can be sourced from a second optical fiber, and extracted light can be supplied to a second optical fiber which can have a lens at its free end.

Mode suppressing coplanar waveguide transition and method

Abstract: A series capacitance is included in both surface ground conductors of coplanar waveguide on an MMIC die. The capacitance compensates for the inductance of bond wires used for transitioning from microstrip line to coplanar waveguide. The capacitance is chosen to resonate with the inductance of the bond wires at the desired frequency. As a result, virtually all microstrip mode ground signal currents are transitioned from the ground plane of the microstrip line to the surface ground conductors of the coplanar waveguide. Microstrip modes affecting the coplanar waveguide are significantly reduced improving isolation between ports of the MMIC die.

Methods and apparatus for coupling an earth terminal to a satellite

Abstract: Methods and apparatus are provided for coupling an earth terminal to a satellite The apparatus comprises multiple inputs of the earth terminal configured to receive multiple digital communication signals, a autoscaling digital multiplexer of the earth terminal configured to digitally multiplex the multiple digital communication signals to produce a digital composite signal, and a digital modulator of the earth terminal configured to digitally modulate the digital composite signal to produce a digitally modulated composite signal. In addition, the apparatus comprises an input of the satellite configured to receive the digitally modulated composite signal, and a digital demodulator of the satellite configured to digitally demodulate the digitally modulated composite signal received by the input of the satellite to produce a second digital composite signal. Furthermore, the apparatus comprises a autoscaling digital demultiplexer of the satellite configured to digitally separate the second digital composite signal into a second plurality of digital communication signals, and a modulator of the satellite configured to modulate the second plurality of digital communications signal to produce multiple modulated analog signals.