The Boeing Company

Other

Chris M Thomas

Brian K Kormanyos

Spencer A Smith

Richard L Thomas

Chris Gambino

An open loop process and temperature independent bias circuit for stacked device amplifiers is disclosed herein. In one or more embodiments, a method for biasing a stacked high-voltage signal amplifier with a voltage divider bias module comprises generating, by the voltage divider bias module from a power supply voltage (VDD), a plurality of control voltage biases, which comprise a plurality of voltage references plus an offset voltage term (Vtemp). In one or more embodiments, the plurality of voltage references are each proportional to a division of the power supply voltage (VDD), and the offset voltage term (Vtemp) is proportional to temperature and is a function of process variation. The method further comprises biasing, a plurality of devices of the stacked high-voltage signal amplifier, with the control voltage biases.

Open loop process and temperature independent bias circuit for stacked device amplifiers

An amplifier with stacked transconducting cells in 'current mode combining' is disclosed herein. In one or more embodiments, a method for operation of a high-voltage signal amplifier comprises inputting, into each transconducting cell of a plurality of transconducting cells, a direct current (DC) supply current (Idc), an alternating current (AC) radio frequency (RF) input current (I), and an RF input signal (RF). The method further comprises outputting, by each of the transconducting cells of the plurality of transconducting cells, the DC supply current (Idc) and an AC RF output current (I). In one or more embodiments, the transconducting cells are connected together in cascode for the DC supply current, and are connected together in cascade for the AC RF input and output currents.

Amplifier with stacked transconducting cells in current mode combining

An amplifier with stacked transconducting cells in parallel and/or cascade 'current mode' combining is disclosed herein. In one or more embodiments, a method for operation of a high-voltage signal amplifier comprises inputting, into each transconducting cell of a plurality of transconducting cells, a direct current (DC) supply current (Idc), an alternating current (AC) radio frequency (RF) input current (I), and an RF input signal (RF). The method further comprises outputting, by each of the transconducting cells of the plurality of transconducting cells, the DC supply current (Idc) and an AC RF output current (I). In one or more embodiments, the transconducting cells are connected together in cascode for the DC supply current (Idc), are connected together in parallel (or in cascade) for the RF input signal (RF), and are connected together in parallel (or in cascade) for the AC RF output currents (I).

Amplifier with stacked transconducting cells in parallel and/or cascade 'current mode' combining

A reticle incorporates an optical center and a plurality of measuring points. The measuring points are formed by a primary vertical line, a primary horizontal line intersecting the primary vertical line at the optical center, a plurality of dots intersecting the primary lines and evenly spaced at a predetermined distance along the primary lines, a plurality of secondary lines intersecting one of the primary lines and evenly spaced between the dots therein. The secondary lines are shorter than 0.2 mil. Alternatively, the reticle further incorporates at least one post on at least one end of the primary lines with post hash marks thereon. Each the intersecting lines forms one of the plurality of measuring points.

Mil.dot reticle and method for producing the same

A disposable disruptor device including a stator and a rotor. The rotor is disposed for rotation in the stator and has blades at one end thereof. A reverse-threaded helical ridge between the stator and the rotor pumps fluid down the stator and prevents fluid from being drawn up inside the stator tube.

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Playa Vista, CA, United States of America

Chris M Thomas