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3975700 |
Radio-frequency signaling cable for inductive-carrier communications systems
A radio-frequency signaling cable comprising a center conductor, dielectric means disposed about the center conductor, and a conductive sheath disposed about the conductor and dielectric means. An...
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3968457 |
Microwave non-reciprocal junction device
A multiple channel non-reciprocal junction device for the transmission of microwaves. It is constituted by a wafer of ferrimagnetic material, to which there is applied in a longitudinal direction a...
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3967218 |
Edge-guided wave directional combiner
An edge-guided mode microstrip device having a pair of input ports and a mon output port, with two separate ferrite substrates each having a microstrip conductor electrically connected between a...
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3953702 |
Solid state microwave oven power source
Disclosed is a solid state power source for microwave ovens which combines the power from multiple solid state oscillators or amplifiers in phase into a single port or load. Amplifiers are driven...
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3947782 |
Diode ring mixer
A diode ring mixer in which a coupling loop between two ferrite spheres is constructed as a double conductor. The coupling loops for the symmetrical input and symmetrical output are branched off in...
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3943466 |
Compander for TDM telecommunication system
Amplitude samples of voice signals to be transmitted by pulse-code modulation are compared with a quasi-exponential reference voltage generated during each sampling interval while a binary counter...
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3939445 |
Ball universal joint for wave guides
A ball universal joint for wave guides comprising a package of plates, each of which having therein a rectangular cross-section hole a quarter-wave length, the plates being compressed on one...
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3935548 |
Wide-band microwave circulator
A planar Y-junction microwave circulator formed by depositing on a ferrite substrate a metallization pattern consisting of a central resonant disc and three transmission line ports radially...
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3935549 |
Ferrite circulator
Disclosed is an improved ferrite circulator particularly adapted for use as an isolator in VHF and UHF transmission systems. It comprises a pair of relatively thick ground plates to which are...
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3934208 |
Low noise modular parametric amplifier
The low noise parametric amplifier disclosed is a non-cryogenic non-redundant plural stage unit with excess gain such that failure of any one stage results in only minor degradation of...
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3928824 |
Waveguide circulator
A waveguide circular which includes at least three waveguide H plane ports, said ports so arranged that at their junction a ferrimagnetic post is provided, one or two matching conductor or...
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3923364 |
Shielded flexible conductor cable and assembly thereof
A shielded, flat, flexible conductor cable includes a first conductor layer which forms a ground shield. The ground shield has an insulating thereover with a series of spaced-apart, individual,...
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3922620 |
Circulator with connecting arms designed in accordance with the MIC technique
A circulator includes connecting arms designed in accordance with the MIC technique which merged to form a branch, wherein a disc constructed of gyromagnetic material is arranged in the branching...
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3921085 |
Frequency discriminator apparatus
A frequency discriminator having a bandwidth variable from a relatively narrow range to a very wide range in which the center frequency is simultaneously tunable over an extremely wide frequency...
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3914531 |
Power isolated transmission cable assembly
An improved matched impedance and power transmission cable assembly is disclosed having a pair of flat flexible cables. Each cable comprises a flexible insulating substrate with circuitry on both...
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3912877 |
Electrical communication switching network providing far-end crosstalk reduction
A high impedance to low impedance transmission network in which an effective negative impedance is introduced at the demodulator end to achieve a further significant reduction in far-end crosstalk....
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3895320 |
Broad-band lumped-element circulator
A circulator preferably fabricated using thin film techniques. Broad-band isolation and insertion loss characteristics are obtained in the gigahertz frequency range by replacing the conventional...
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3895319 |
High-power Y-junction H-plane circulator for microwave transmission
A circulator for the transmission of microwave energy comprises three coplanar waveguides of rectangular cross-section forming a Y-junction in their magnetic plane. Two heavy metal discs parallel...
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3890582 |
Floating-ground microwave ferrite isolators
A plurality of floating-ground microwave isolators, each with a different center frequency and overlapping bandwidths are serially connected, and a variable capacitance is connected between the...
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3886497 |
Waveguide circulator having single gyromagnetic element
A three-port waveguide circulator has three waveguide arms meeting at a common junction. A gyromagnetic element is centrally situated at the junction and is subjected to the influence of a magnetic...
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3882411 |
Linear amplifier
The gain and phase characteristic of a negative resistance amplifier circuit is linearized by controlling the bias current of an avalanche diode of the negative resistance amplifier circuit in...
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3876954 |
Microwave circuit having lock detection apparatus
In a solid state microwave amplifier circuit, a plurality of amplifier stages are coupled together to form a power combiner. A loading circuit between the power combiner stages prevents power...
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3868602 |
CONTROLLABLE MICROWAVE POWER ATTENUATOR
A method and apparatus for controlledly attenuating the power of microwave energy passing between a source and an active load. Microwave energy is input to a first port of a circulator, whence it...
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3865980 |
LOADING COIL MEANS FOR MULTI-CONDUCTOR CABLE
Loading coil assembly for a multi-conductor assembly comprises a plurality of spaced-apart trays positioned on the cable and coil housings mounted between the trays. Each coil housing contains a...
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3866150 |
Waveguide junction circulator having conductive partition in magnetic midplane of function
A junction of at least three standardized rectangular waveguides with a standard aspect ratio of about 2 : 1 comprises two spaced-apart ferrite discs fixed to its inner wall surfaces in line with...
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3866149 |
FOUR-PORT JUNCTION CIRCULATOR HAVING LARGER DIAMETER CONDUCTIVE POST CONTACTING GYROMAGNETIC POST
A four-port waveguide circulator includes a pair of rectangular waveguides which extend perpendicular to each other to form a junction having a pair of parallel boundary walls. A post of...
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3860893 |
WIDE BAND ACTIVE CIRCUIT THREE-PORT CIRCULATOR FOR ULTRA-HIGH FREQUENCIES AND MICROWAVES
An active circuit one octave circulator made of three identical arms interconnected at the three-ports, each arm consisting of a gyrator comprising voltage and current single stage transistorized...
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3857113 |
MICROWAVE ACOUSTIC DELAY LINE
A microwave signal is delayed for a predetermined time period with a minimal production of undesired spurious RF signals by providing a resistive termination for undelayed input microwave signals...
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3854993 |
MICROWAVE CIRCULATOR
Microwave circulator can be prepared by depositing magnetic coatings using a direct current arc-plasma generator. The magnetic coatings can be garnets or ferrite compounds. The devices are prepared...
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3854106 |
DEPRESSED-PUCK MICROSTRIP CIRCULATOR
A microstrip circulator has a ferromagnetic puck located beneath the microstrip substrate, in a cavity in a ground plane and includes a d.c. magnetic field applied in a direction which is...
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3851279 |
TEE JUNCTION WAVEGUIDE CIRCULATOR HAVING DIELECTRIC MATCHING POSTS AT JUNCTION
A broadband tee junction waveguide circulator of improved design is disclosed. A ferrite element of triangular cross-section is disposed in the region of the junction of the two waveguides....
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3845421 |
POLARIZATION INSENSITIVE TRANSMISSION PHASE SHIFTER
The apparatus of the present invention constitutes a four part polarization insensitive transmission type phase shifter which utilizes a single phase shifter to provide the same amount of phase...
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3845413 |
WIDEBAND NON RECIPROCAL INTEGRATED CIRCUITS UTILIZING SURFACE WAVE PROPAGATION
The present invention relates to non-reciprocal devices operating in the very high, ultra high, and higher frequency bands. It utilizes in a novel manner, the properties of TM or quasi-TM surface...
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3838361 |
STRIP-LINE CIRCULATOR FOR THE FREQUENCY RANGE FROM 10 TO 1,000 MHz
The strip-line circulator comprises three coplanar conductors bent about 120° and symmetrically arranged in a spaced relationship from one another about a common central area on a gyromagnetic...
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3838360 |
JUNCTION CIRCULATOR HAVING CURVED CONDUCTORS ON OPPOSITE SIDES OF PRINTED CIRCUIT BOARD
A circulator, comprising conductors which are provided between opposite connection terminals on an insulated plate. The conductors are situated partly on one side of the plate and partly on the...
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3836874 |
LUMPED ELEMENT CIRCULATOR
In a lumped element circulator wherein three line conductors are arranged on the surface of a ferrimagnetic substrate with cross angles of 120° with respect to one another and in a manner to be...
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3831114 |
ENCAPSULATED MICROSTRIP CIRCULATOR WITH MODE ELIMINATION MEANS
A microstrip circulator mounted within a metallic enclosure includes a dielectric substrate, a single ground planar conductor on one surface of the substrate and a plurality of narrow strip-like...
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3820041 |
RESONANCE CONTROL IN INTERDIGITAL CAPACITORS USEFUL AS DC BREAKS IN DIODE OSCILLATOR CIRCUITS
A modified stripline interdigital capacitor has slots coupled into the capacitor gap. These slots provide reactive loading to the slot transmission line formed by the gap. They are positioned and...
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3818381 |
NON-RECIPROCATING CIRCUIT DEVICE USING A CIRCULATOR
A wide band circulator and a non-reciprocating circuit device using such wide band circulator, in which the symmetry of the circulator characteristics is improved by dividing at least one of either...
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3806837 |
PLUG-IN HIGH-POWER WAVEGUIDE JUNCTION CIRCULATOR
The disclosure describes an isolator for detachable installation in a rectangular waveguide transmission line, realized in a three-port waveguide junction circulator having a matched-impedance...
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3789324 |
LUMPED CONSTANT CIRCULATOR
A lumped constant circulator comprising a conductor case; a central assembly consisting of a conductor assembly including at least three insulated conductor strips intersecting each other...
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3781704 |
HIGH ISOLATION CIRCULATOR ARRANGEMENT FOR LOW NOISE REFLECTION TYPE AMPLIFIERS
A multi-junction cascade circulator includes an interjunction tuning device to enable operation of a reflection type amplifier with only one pass of input isolation, thereby minimizing degradation...
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3775552 |
MINIATURE COAXIAL CABLE ASSEMBLY
The present invention relates to a miniature flexible coaxial cable assembly and a method of fabricating the same wherein a plurality of continuous, individually sheath dielectric covered coaxial...
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3772615 |
WIDE-BAND CIRCULATOR
A wide-band circulator employing a Y-shaped stripline conductor having a generally circular center section and a plurality of symmetrically spaced, generally sector-shaped arms extending radially...
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3771064 |
BIDIRECTIONAL SIGNAL PROCESSING MEANS
A bidirectional signal processing means comprising a first directional coupling means having first, second, and third terminals, input signals received at the first terminal being delivered to the...
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3768045 |
WIDE RANGE VARIABLE PHASE SHIFTER
A variable phase shifter having a substantially wide phase shift variation range is formed of more or less standard circuit elements such as inductors, capacitors, quadrature hybrids and variable...
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3764941 |
STRIPLINE DIRECTIONAL COUPLING DEVICE
A directional coupling device is provided having a first and second conductor of a first pair of conductors extending parallel to and closely spaced from one another. A second pair of conductors...
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3761924 |
ISOLIMITER
A ferrite isolator is combined with a ferrite-varactor limiter waveguide section to absorb reflected power without affecting microwave power signals incident to the ferrite limiter. A single magnet...
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3761842 |
TWISTED PAIR FLAT CONDUCTOR CABLE WITH MEANS TO EQUALIZE IMPEDANCE AND PROPAGATION VELOCITY
The use of so-called paired flat cable in interconnection work is attractive because of mass termination and rearrangement cost benefits. Flat cable has been supplied with differing twist lengths...
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3758878 |
MICRO-STRIP AND STRIPLINE JUNCTION CIRCULATORS
A junction circulator having (one) microstrip or (two) stripline discs, or other geometries of ferrimagnetic material or in combination with non-ferrimagnetic insulating materials, spaced between a...
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