Itt Corporation

Triton Services, Inc.

Kenneth S Karsten, Jr

Richard C Wertman

Frank F Francisco

David A Willems

Virender K Sadhir

Stephen E Thompson

Jody L Byram

A liquid cooled collector for an electron beam tube. The collector includes a dielectric body through which is formed a central cavity. Within the central cavity are disposed at least one electrode that dissipates the impinging electron beam. The electrodes are thermally coupled to the dielectric body. As such, when the electrodes absorb the electron beam, the resulting heat is conducted into the dielectric body. A plurality of fluid conduits are disposed around the dielectric body wherein at least one side of each conduit is defined by the dielectric body. Furthermore, an input manifold and an output manifold are also partially defined by the dielectric body and interconnect each of the fluid conduits. Each of the fluid conduits extend separately from a point along the input manifold to a point along the output manifold. Consequently, by providing a flow of coolant into the input manifold, the coolant flows through each of the fluid conduits into the output manifold, thereby cooling separate regions of the dielectric body. Since all the fluid conduits are contained within the casing of the collector, the collector is liquid cooled in a very space-efficient manner. In addition, since the heat conduction paths through the dielectric material to the fluid conduits are very short, the fluid conduits absorb heat in a highly efficient manner.

Liquid cooled fluid conduits in a collector for an electron beam tube

The present invention is an anisotropically loaded helix assembly for use in a traveling-wave tube, and the corresponding method for making the same. The present invention includes a helix circuit concentrically supported within a conductive cylindrical housing by a plurality of dielectric support members. The present invention effects an improved efficiency and bandwidth in the performance of TWT by the material used to form the dielectric support members, the shape of the dielectric support members and the manner by which the anisotropic load is affixed to the dielectric support members.

Method of making anisotropically loaded helix assembly for a

An equalizer circuit for equalizing RF frequencies implemented as an MMIC or MIC having a series of microstrip transmission lines between an RF input terminal and an RF output terminal and having at least one shunt path comprised of a series combination of a FET able to be switched between a conducting state and a nonconducting state and a stud tuner microstrip transmission line, wherein the FET is used as a voltage variable resistor to selectively de-Q the stub tuner and thereby control the depth of the equalization curve. In a modified embodiment, artificial transmission lines which include a plurality of inductive elements and FETs are coupled to each shunt path, wherein the shunt paths may be selectively shorted by changing the state of the FETs, thereby permitting the center frequency of the equalizer circuit to be shifted as well.

Electronically tunable gain equalizer

Anisotropically loaded helix assembly for a traveling-wave tube

The present invention is a periodic permanent magnet (PPM) assembly used to produce a focussing field within an electron tube, and the corresponding method of manufacturing the same. The present invention PPM includes producing two opposing semi-cylindrical stacks by alternately stacking semi-annular shaped magnets and pole pieces. Once the two semi-cylindrical stacks are formed, they are joined around the electron tube, such that the various pole pieces and magnets of the two semi-cylindrical stacks align. As a result of the joining of the two semi-cylindrical stacks, a cylindrical periodic permanent magnet assembly is formed around the electron tube in a cost effective and labor efficient manner.

Interlocking periodic permanent magnet assembly for electron tubes and

The present invention is an equalizer circuit for RF frequencies comprising a microstrip transmission line having a stub tuner extending transversely therefrom and further having resistive means coupled to the stub tuner to de-Q the stub tuner, thereby selectively determining an attenuation profile for the equalizer circuit.

Monolithic compatible, absorptive, amplitude shaping network

A triode having a coaxially positioned cathode and grid or gate electrode positioned within an evacuated tubular anode. The cathode has a plurality of emitting points radially disposed on its outer surface. The emitting points are surrounded by a plurality of grid or gate electrodes controlling the conducted beam current between the inner cathode and the surrounding anode. The gain and power of the triode is only limited by the number of emitter points and the number of grid or gate electrodes positioned within the anode. Since the anode envelopes the cathode and grid electrode, the anode can be used as a waveguide or antenna launch without the need of RF coupling connectors.

Coaxial triode apparatus

A traveling-wave tube, wherein the wire helix of prior art devices is replaced by a digital helix formed within a composite structure of thick or thin film substrates. The traveling-wave tube helix is formed from multiple substrate layers, each having conductive segments surrounded by insulating material. The superimposing of the substrate layers causes conductive segments from adjacent layers to partially overlap and form a continuous slow-wave structure between an input lead and an output lead, that mimics a traditional wire helix. The composite structure creation of the traveling-wave tube helix allows traveling-wave tubes to be miniaturized and increased in efficiency to point previously unachievable by traditional wire helix devices.

Digital helix for a traveling-wave tube and process for fabrication

A distributed array of microelectronic triodes constitutes a series of banks of triodes arranged in a concentric configuration. Each triode in the bank is a microelectronic triode fabricated by semiconductor integrated circuit techniques. Triodes in each individual bank are arranged in a parallel or other configuration whereby each of the triodes operate to provide increased power in regard to input signals applied to each bank. The array of triodes is capacitively coupled so that each of the banks contributes to the total output power. The coupling is provided for by capacitive coupling with biasing being accommodated by resistor biasing networks which are also integrated circuit components. The output power from the array is taken through a common output coupling configuration which configuration is connected to a suitable cylindrical member which operates to respond to the total output power of the array to enable the output power to be utilized in other suitable microwave components such as a coaxial line or a waveguide.

Growing community of inventors

Bethlehem, PA, United States of America

Kenneth S Karsten, Jr