Raytheon Company

James L Lampen

George Jerinic

Glenn R Thoren

Thomas E Kazior

Jerome Howard Pozgay

Matthew Fassett

Paul Setzco

Allen L Hieber

Michael G Kizner

Francis J Sullivan, Jr

Jaiyoung Park

Lawrence R Lewis

John P Wendler, Jr

A phase shifter for changing the phase of a signal fed thereto. The phase shifter includes an inductive reactance element and a capacitive reactance element having one electrode connected to either the input or the output port and a pair of switching elements. A first switching element thereof switches between a conducting state and a non-conductive state when the control signal changes from a first logic state to a second logic state while a second switching element thereof switches between a non-conducting state and a conductive state when the control signal changes from the first logic state to the second logic state.

Compact 180 degree phase shifter

A plurality of integrated circuits, such as microwave monolithic integrated circuits (MMICs), is supported upon a common carrier substrate having transmission lines for interconnection of signals between terminals of any one of the MMICs and among terminals of the plurality of MMICs. Circuit terminals at the front sides of the respective MMICs are connected electrically by vias to the back sides of the respective MMICs to be adjacent conductive components of the transmission lines. Electrically conductive bumps of metal or epoxy serve to connect the vias to the conductive components of the transmission lines, and to connect also metallized regions of the MMICs to metallized regions of the substrate.

Direct backside interconnect for multiple chip assemblies

A transmit and receive module is described which provides means within the module for switching between two orthogonal linear polarization ports and right and left hand circular polarization ports for both transmission and reception while maintaining very low RF reflections from the module at antenna ports.

Microwave switch

An amplifier using a plurality of solid state diodes as the active elements is shown to comprise a plurality of amplifier channels fed, through a first radial line, by signals to be amplified and connected, through a second radial line, to a load.

Solid state diode amplifier

A power combiner for solid state oscillator circuits is shown to be the combination of a central cavity and a plurality of subcavities, each one of the latter being dimensioned to operate in the TM.sub.010 mode to synchronize a plurality of solid state oscillator circuits. The central cavity and each one of the plurality of subcavities are coupled together through coaxial lines so that the central cavity in turn synchronizes the plurality of subcavities.

Power combiner

An improved solid state transmitter (and elements therefor) adapted particularly well to pulsed operation at radio frequencies is disclosed. Such transmitter includes the combination of: A crystal-controlled oscillator producing a continuous wave output signal which, ultimately, determines the frequency of each transmitted pulse; a first oscillatory circuit, including a resonant cavity and at least one normally quiescent coaxial oscillator incorporating an IMPATT diode; a second oscillatory circuit, including a resonant cavity and a plurality of normally quiescent coaxial oscillators, each one of such oscillators incorporating an IMPATT diode; and an improved modulator for periodically actuating all of the IMPATT diodes in such a manner that a pulsed output of the first oscillatory circuit is produced which remains locked to the then existing continuous wave signal out of the crystal-controlled oscillator and the pulsed outputs of the coaxial oscillators in the second oscillatory circuit similarly are locked. The improved elements disclosed, in addition to the improved modulator, include various configurations of coaxial oscillators which are easier to align than known oscillators of such type or which allow a greater number of such oscillators to be coupled to a resonant cavity than was possible according to the prior art. Finally, an improved probe and tuning arrangement for a resonant cavity is disclosed.

Coaxial line IMPATT diode oscillator

Cylindrical cavity power combiner for plurality of coaxial oscillators

An improved solid state transmitter (and elements therefor) adapted particularly well to pulsed operation at radio frequencies is disclosed. Such transmitter includes the combination of: A crystal-controlled oscillator producing a continuous wave output signal which, ultimately, determines the frequency of each transmitted pulse; a first oscillatory circuit, including a resonant cavity and at least one normally quiescent coaxial oscillator incorporating an IMPATT diode; a second oscillatory circuit, including a resonant cavity and a plurality of normally quiescent coaxial oscillators, each one of such oscillators incorporating an IMPATT diode; and an improved modulator for periodically actuating all of the IMPATT diodes in such a manner that a pulsed output of the first oscillatory circuit is produced which remains locked to the then existing continuous wave signal out of the crystal-controlled oscillator and the pulsed outputs of the coaxial oscillators in the second oscillatory circuit similarly are locked. The improved elements disclosed, in addition to the improved modulator, include various configurations of the coaxial oscillators which are easier to align than known oscillators of such type or which allow a greater number of such oscillators to be coupled to a resonant cavity than was possible according to the prior art. Finally, an improved probe and tuning arrangement for a resonant cavity is disclosed.

Growing community of inventors

Burlington, MA, United States of America

James L Lampen