Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Fungicidally and bactericidally active thiocarbamates of the formula: ##STR1## where R.sup.1 represents a methyl, methoxy, halo or trifluoromethyl group; R.sup.2 represents hydrogen, a methyl, methoxy, chloro or nitro group; R.sup.3 represents hydrogen or a methoxy group; and R.sup.4 is an ortho- or para-hydroxy group. The compounds find particular use as slimicides and as preservatives for various industrial preparations.

Abstract: Fungicidally and bactericidally active compounds of the formula ##SPC1##Where R is allyl, cyclohexyl, naphthyl and preferably, ##SPC2##Where R.sub.1 is methoxy, ethoxy, methylthio, ethoxycarbonyl; R.sub.2 is H, methoxy, chloro, methyl, nitro; R.sub.3 is H, chloro. The compounds are used as fungistats and bacteriostats in soap and shampoo formulations and as preservatives in various industrial preparations. Certain di-8-quinolyl esters of arylenedicarbamic acid and poly(8-quinolyl esters) of carbanilic acid are found to possess activity against bacteria and fungi.

Abstract: Antibacterial and germicidal detergent compositions contain as an active ingredient N,N-dialkylthiocarbamoyl sulfenamides of the formula ##EQU1## where R.sup.1 and R.sup.2 represent lower alkyl groups, both R.sup.3 and R.sup.4 are cyclohexyl or R.sup.3 is hydrogen when R.sup.4 is phenyl and compounds where R.sup.1 and R.sup.2 as well as R.sup.3 and R.sup.4 form a heterocyclic ring, particularly morpholine. The active compounds are particularly useful as skin substantive bacteriostats in soap and shampoo formulations and as germicides in cosmetic and toilet preparations.