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5039995 |
Distributed antenna system
A distributed antenna system comprises a plurality N of spaced apart antennas 3, each antenna being connected to a RF line 2 via a circulator 4, wherein each circulator 4 is arranged to pass to its...
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5036160 |
Twisted pair backplane
A backplane having a layer of insulation material, a plurality of lead segments arranged in line and spaced from one another on a first surface of the insulation material, a plurality of...
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5027088 |
Signal wiring board
A signal wiring board of the present invention includes a dielectric layer and a signal transmission path formed on a surface opposite to a surface of a ground layer formation surface on the board....
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5017894 |
Lumped constant non-reciprocal circuit element
A lumped constant non-reciprocal circuit element includes an insulator substrate, a predetermined number of conductor layers formed on a top surface of the insulator substrate for forming...
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5012047 |
Multilayer wiring substrate
A multilayer wiring substrate which includes a plurality of laminated wiring layers, a plurality of insulating layers for providing insulation between the wiring layers, and a plurality of hollows...
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5003273 |
Multilayer printed circuit board with pseudo-coaxial transmission lines
A multilayer printed circuit board has a plurality of planar layers formed with signal conductor lines and return lines grouped around the conductor lines to form pseudo-coaxial transmission lines....
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4920323 |
Miniature circulators for monolithic microwave integrated circuits
A miniature circulator which is compatible with integrated circuits is described. The circulator includes a substrate which supports three copolanar waveguide transmission lines which are connected...
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4918409 |
Ferrite device with superconducting magnet
A ferrite device has a closed superconductor which encircles a ferrite element. The closed superconductor continuously circulates a current to produce a magnetic field for biasing the ferrite element.
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4916808 |
Process for fabricating a sculptured stripling interface conductor
A process for forming a stripline interface conductor. A stripline interface conductor receives a circuit element and provides spaced-apart connections to each of the closely spaced leads of the...
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4916414 |
Permanent magnet circulator having U-shaped ferrites and magnets
A circulator for duplexing microwave signals is shown to consist of a pair of folded magic-T hybrid junctions with a nonreciprocal phase shift section disposed between the parallel ports of such...
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4908820 |
Non-reciprocal bidirectional duplexer
A non-reciprocal bidirectional duplexer includes a first transmission medium extending from a first terminal to a third terminal; a second transmission medium extending from the second terminal to...
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4904965 |
Miniature circulator for monolithic microwave integrated circuits
A miniature circulator which is microwave integrated circuit compatible and based on microstrip transmission techniques is described. The circulator includes a dielectric or semiconductor substrate...
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4901039 |
Coupled strip line circuit
A strip line circuit assembly consisting of a first and second strip line ch comprised of three dielectric layers having conductor strips on either side of the center layer and ground planes on the...
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4862117 |
Compact millimeter wave microstrip circulator
A millimeter wave microstrip Y-junction circulator is provided comprising a ection of microstrip dielectric substrate having a cone-shaped ferrite element mounted on one side thereof together with...
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4855694 |
Lumped element circulator having a conductive pedestal frame structure
A lumped element circulator comprises a dielectric substrate having a conductive layer on an upper center portion of its upper surface and a lower conductive layer entirely on its lower surface. A...
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4851793 |
Waffleline - configured transmission link
A miniaturized transmission link architecture for intercoupling high frequency miniaturized integrated circuit components comprises a thin conductive plate in one surface of which a matrix or grid...
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4845311 |
Flexible coaxial cable apparatus and method
A flexible coaxial cable capable of high frequency signal propagation formed from a multilayer configuration having a plurality of adjacent signal traces etched in dielectric material and...
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4837528 |
Microwave phase shifter
A phase shifter suitable for operation at very high high-frequency power is composed of a waveguide in which ferromagnetic material is distributed along at least one plane extending in the...
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4831497 |
Reduction of cross talk in interconnecting conductors
A circuit assembly including a plurality of integrated circuit chips wherein electrical interconnections between chips at a relatively large distance from each other are accomplished by a conductor...
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4825175 |
Broadband, high isolation radial line power divider/combiner
Disclosed is a power divider/combiner using two parallel plate radial transmission lines having parallel plate spacing of less than λ/2 and which operates in a higher order mode, preferably the...
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4812787 |
Lumped constant non-reciprocal circuit element
A lumped constant non-reciprocal circuit element such as a circulator or an isolator comprising a set of mutually insulated central conductors, a garnet plate not more than 0.6 mm in thickness, a...
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4810979 |
Microwave junction circulator
A junction circulator suitable for high power, high-frequency use has a microwave junction zone which is penetrated by a static magnetic field. Disposed in the microwave junction zone is a...
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4808949 |
Integrated hyperfrequency circulator
A hyperfrequency circulator is provided in which the gyrator is integrated in the wave-guide, comprising a wave-guide whose two main faces are pierced with two holes, aligned with the center of...
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4801902 |
Waveguide circulator with I/O port impedance matching produced by ferrite-port gap dimensioning
Impedance matching between a waveguide circulator and its input/output ports is achieved by properly dimensioning a gap formed between a ferrite circulator element inside the waveguide circulator...
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4801901 |
Non-ferrite non-reciprocal phase shifter and circulator
A non-reciprocal phase shifter including a transmission medium connected between first and second terminals and having a predetermined phase shift which is the same in each direction and an...
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4797992 |
Method of making a thin film integrated microcircuit
A method of forming a microwave integrated circuit is disclosed. A hole is bored in an alumina substrate and a plug having a diameter substantially equal to the hole is provided. The hole and the...
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4798918 |
High density flexible circuit
A high density flexible circuit for coupling electrical devices. The flexible circuit has signal and ground traces on both sides of the flexible circuit. Each signal trace is surrounded by ground...
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4794352 |
High power junction circulator for high frequencies
In a high power, high-frequency junction circulator which includes a cooled ferrite structure disposed in a microwave junction zone where it is subjected to a static magnetic field, the ferrite...
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4791389 |
Millimeter wave circulator
A millimeter wave wideband circulator which employs a triangular ferrite prism with symmetrically grooved sides. The prism is configured to support a pair of closely-spaced higher order resonance...
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4789844 |
Broad-band non-reciprocal microwave devices
A stripline circulator includes a pair of dielectrically supported ferrite discs and a pair of spaced hemispherical ferrite caps each one disposed over a corresponding one of the ferrite discs. The...
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4785135 |
De-coupled printed circuits
Arrangement for reducing cross talk between electrical circuit conductors wherein the conductors lie within individual parallel channels within the same plane or different parallel planes within...
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4777454 |
Switchable dielectric waveguide circulator
A switchable dielectric waveguide circulator is provided for millimeter wave frequency applications comprising a ferrite right prism having two polygonal prism bases and at least three lateral...
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4771252 |
High power waveguide junction circulator having ferrite suspension at the junction
A junction circulator for high power, high-frequency use employs cooled ferrite material disposed in the microwave junction zone where it is exposed to a static magnetic field. The cooled ferrite...
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4761621 |
Circulator/isolator resonator
A microstrip resonator (311) for a circulator/isolator is disclosed employing radial (815, 817, and 819) and circumferential (821, 823, and 825) slots to load the resonator and reduce the frequency...
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4755827 |
Millimeter wavelength monolithic ferrite circulator/antenna device
A millimeter wavelength monolithic ferrite circulator/antenna device is pided comprising a four-sided ferrite rod having one end which is to be selectively coupled to millimeter wavelength radar...
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4754102 |
Directional interconnection cable for high fidelity signal transmission
A directional transmission cable is disclosed which has a plurality of insulated conductive wires. The cable also has a source terminal and a destination terminal. A first connection of a...
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4754237 |
Switchable millimeter wave microstrip circulator
A millimeter wave switchable microstrip Y-junction circulator is provided comprising a monlithic, wye-shaped ferrite element disposed on one surface of a section of microstrip dielectric substrate...
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4749965 |
Miniaturized gyromagnetic device
A miniaturized and integrated gyromagnetic device in which a center conductor is mounted between a pair of dielectric wafers and ferrite conductors to define a circular inner configuration. A...
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4749966 |
Millimeter wave microstrip circulator
A millimeter wave microstrip Y-junction circulator is provided comprising a monolithic, wye-shaped ferrite element disposed on one surface of a section of microstrip dielectric substrate having...
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H000470 |
Millimeter wave microstrip circulator utilizing hexagonal ferrites
A millimeter-wave circulator for microstrip use. The device employs an hexagonal ferrite element to selectively direct the propagation of electromagnetic energy through a Y-junction circulator. The...
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4740762 |
Thin film integrated microcircuit
A microwave integrated circuit is comprised of a ferrite plug in an alumina substrate, fused therein by a glass composition thermally compatible with both plug and substrate, thereby filling any...
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4724399 |
Circuit arrangement comprising an isolator integral with an admittance element
In a circuit arrangement comprising a three port isolator (21) which has input, output, and dummy ports (33, 22, and 23), an admittance element (41 to 43) is connected at a position or positions...
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4720690 |
Sculptured stripline interface conductor
A sculptured stripline interface conductor for providing spaced apart access to the closely spaced conductors of a circuit element. The low impedance and crosstalk of stripline suggests the use...
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4717895 |
High-frequency, high-power waveguide junction circulator
A waveguide junction circulator for a high power application at a high operating frequency. The circulator includes a plurality of connecting waveguides, each of which has a standard height...
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4716500 |
Probe cable assembly
A probe cable assembly for use in connecting a monitoring instrument to an electronic SUT, to analyze the interaction between the system and a multiple terminal electronic component which can be...
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4710733 |
r.f. Phase modulator
An r.f. phase modulator operable at up to extremely high frequencies. A circulator (1) having input, output, and isolated ports (2, 3, 4, respectively), channels an r.f. carrier (15) in a...
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4707671 |
Electrical transmission line
An electrical transmission unit line is provided comprising a porous dielectric layer having positioned on one side thereof a pair of narrow, parallel elongated electrical conductors and on the...
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4704588 |
Microstrip circulator with ferrite and resonator in printed circuit laminate
A microstrip circulator is disclosed in which a resonator (311) is metalized on one layer (309) of a multilayer printed circuit board (301) and a ferrite element (305) is disposed in another layer...
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4703289 |
Distributed resonator stripline circulator and method for fabricating same
A distributed resonator stripline circulator is disclosed wherein a geometrically shaped resonator pattern is deposited upon a like geometrically shaped ferrite substrate. A ground plane is...
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4703288 |
Interconnection lines for wafer-scale-integrated assemblies
In wafer-scale-integrated assemblies, microminiature transmission lines are utilized as interconnects on the wafer. The extremely small cross-sectional area of a typical such line results in its...
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