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5479138 |
Multi-layer wiring board
In a multi-layer wiring board having a strip line structure in which a grounding conductor wiring and a signal circuit wiring are disposed by interposing therebetween an insulation layer, the...
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5467061 |
Flat cable to flat parallel wire cable
A LAN which uses flat telephone cable having at least four conductors. The inner conductors are joined together and the outer conductors are joined together at each node thereby making reversals of...
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5463358 |
Multiple channel microwave rotary polarizer
This invention is a multiple channel microwave polarization rotator with external rotary mechanical energy coupling. It finds application in microwave polarization rotators, resolvers, amplitude...
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5459439 |
Microwave magnetic material body and method of fabricating same
A microwave magnetic material body for use in a microwave non-reciprocal circuit element, is constructed by sintering a laminated body obtained by laminating a plurality of magnetic sheets.
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5450045 |
Multi-layer microwave circulator
A circulator includes a circulator element (50) with inner conductors (41) having a predetermined pattern and an insulating ferromagnetic material body (40) closely surrounding the inner...
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5446729 |
Compact, low-intermodulation multiplexer employing interdigital filters
An improved multiplexer comprises a housing, a transmission line transformer section within the housing extending in a first direction, and at least two interdigital transmission line filters...
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5432485 |
Circuit for crossing strip lines
A cross circuit comprises a lattice structure formed on a single layer of a multilayer printed circuit, the lattice structure having an arrangement of nodes consisting of two input nodes, two...
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5426399 |
Film carrier signal transmission line having separating grooves
A film carrier signal transmission line includes a dielectric material having a first, front surface and a second, rear surface opposite the first surface, signal lines buried in the dielectric...
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5419947 |
Non-reciprocal circuit elements
Non-reciprocal circuit elements, wherein a plurality of ceramic green sheets having given electrode films with pattern shapes formed respectively on them are collectively fired and integrated into...
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5418504 |
Transmission line
A thin film flexible multi-conductor transmission line having a ground plane deposited on one surface of a flexible thin film insulating member and an array of conductors and pairs of conductors...
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5414393 |
Telecommunication connector with feedback
A connector for communications systems has four input terminals and four output terminals, each arranged in an ordered array. A circuit electrically couples each input terminal to the respective...
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5384555 |
Combined RF and digital/DC signalling interconnect laminate
An interconnect laminate structure integrates RF and auxiliary (e.g. digital and D.C.) signalling capabilities in a common structure by means of a stacked conductor-plated dielectric configuration...
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5384556 |
Microwave circulator apparatus and method
A ferrite stripline circulator having low cost, broad tolerance elements and an easy to assembly design. The unit comprises of a cylindrical housing into which are stacked a ferrite disk, a center...
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H001408 |
Microwave circulator with a planar, biasing, permanent magnet
A microstrip circuit having a plurality of coplanar microstrips mounted on a common dielectric substrate. A planar circulator is coupled to a junction of the microstrips. The circulator includes a...
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5367273 |
Adapter for video and audio transmission
Disclosed is an adapter which permits unbalanced video and audio baseband signals to be transmitted over unshielded twisted pair wiring. The adapter includes low loss transformers which produce a...
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5347241 |
Dual junction back-to-back microstrip four-port circulators
A dual junction back-to-back four-port microstrip circulator made up of two three-port single junction circulators whose substrates lay back-to-back and are interconnected with a coaxial...
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5341419 |
Capacitive unbalancing for reduction of differential mode cross-talk
A device for reducing or eliminating differential mode cross-talk between data communication channels (CH1 and CH2) in a balanced communication system by coupling one or more auxiliary capacitances...
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5334800 |
Flexible shielded circuit board
A flexible circuit board providing the dual benefits of flexibility and shielding against incidental radiation. The flexible, shielded circuit board includes a number of electrical conductors...
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5321372 |
Apparatus and method for terminating cables to minimize emissions and susceptibility
In a computer network having a cable for transmission of electrical signals between data terminal equipment and a device used to control and route data in the network, an apparatus for terminating...
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5300899 |
Thin, flexible, stripline flex cable having two shielding ground planes formed as grids having mutually offset grid patterns
A shielded flexible cable includes a first shielding grid having conductive elements formed as squares. A second shielding grid is also formed as squares. The two shielding grids are positioned...
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5296651 |
Flexible circuit with ground plane
A flexible circuit suitable for high density applications and having a long flexural life is disclosed. A thin film metallic ground plane deposited on a dielectric substrate electrically shields...
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5291290 |
High power broadcast transmission system with ferrite circulator
According to an embodiment of the present invention, a high power RF electric signal transmission system such as a TV broadcast system operating in the range of 100 kW at a UHF band includes one or...
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5291155 |
Microwave buffer
A microwave buffer for use between transmitter modules and an impedance combiner. The buffer is comprised of a plurality of input segments, a plurality of output segments and an elongated...
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5285174 |
Temperature-compensated waveguide isolator
A temperature-compensated junction isolator (28) is used with a waveguide junction (20) in a hollow microwave waveguide system (22). The junction isolator (28) includes a ferrite cylinder (34)...
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5278524 |
Multi-layered printed circuit board with transmission line capabilities
A multi-layered printed circuit board for mounting and interconnecting the terminals of multi-terminal electronic components. The circuit board mounts the electronic components one side of the...
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5266909 |
Waveguide circulator
A circulator including a unique shaped transformer having triangular apexes extending symmetrically into the respective channel and connected to two opposed side walls by coplanar tabs. One of the...
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5247270 |
Dual leaky cables
A dual leaky coaxial cable comprising a pair of parallel elongated conductors, a dielectric surrounding each of the conductors, separate first external conductive shield apparatus surrounding at...
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5243354 |
Microstrip electronic scan antenna array
A microstrip electronic scan antenna array is provided comprising a hollow elongated octagonal-shaped housing formed by four quadrantially-disposed microstrip patch antenna arrays and four filler...
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5227742 |
Stripline cable having a porous dielectric tape with openings disposed therethrough
An improved stripline cable is provided wherein porous, expanded polytetrafluoroethylene having continuous openings therethrough is disposed between sets of substantially parallel electrical...
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5223804 |
Fabrication process for IC circuit and IC circuits fabricated thereby
A method of minimizing line capacitance for transmission lines in integrated circuits is presented to decrease the device performance problems of time delay and noise generation caused by...
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5223805 |
Common node reactance network for a broadband cross beam lumped-element circulator
A microwave circulator circuit having a multiple port lumped-element circulator, and a common node reactance network for coupling the lumped element circulator to the common ground plane of the...
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5216435 |
Array antenna power supply system having power supply lines secured in a cylinder by adhesive
A power supply system adapted for an array antenna to be mounted on satellites, airplanes, ships, land moving objects, or the like, which is so arranged that a cylindrical member (136) is provided...
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5213876 |
Flexible circuit card with laser-contoured VIAs and machined capacitors
A flexible circuit such as a membrane probe (10) is made by forming a trench (50, 60) in the upper surface (39) of a polyimide substrate (38) with a trench base (52, 62) spaced below the upper...
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5185587 |
Compact tandem non-reciprocal circuit
A compact multi-junction ferrite circulator/isolator in which ferrites, junctions with center conductors and permanent magnet are situated in a stacked manner with common center line within...
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5180997 |
Microstrip high reverse loss isolator
A millimeter wave microstrip, high reverse loss isolator is provided comprising a monolithic ferrite element disposed on one surface of a section of microstrip dielectric substrate having a ground...
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5177456 |
Microstrip ferrite circulator for substrate transitioning
A transitioning microstrip circulator. A Y-shaped circulator having two ps coupled to a first planar substrate and a third port coupled to a second planar substrate. The first and second planar...
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5172080 |
Garnet centering ring for circulators and isolators
In a circulator/isolator device used in a cellular transmission network, a centering ring is used to position the garnets with respect to the center conductor, magnets and pole piece. The clamping...
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5164687 |
Compact lumped constant non-reciprocal circuit element
A lumped circulator/isolator element including option with widebanding circuit, in which an inductor is used, at the same time, as one plate of a capacitor creating a capacitance to a ground plane....
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5159294 |
Non-reciprocal circuit element
A non-reciprocal circuit element which includes a case, a circuit element main body provided in the case including central conductors disposed to intersect each other in an electrically insulated...
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5153538 |
Microwave edge guide mode signal splitter and combiner
A broad-band microwave waveguide radio frequency splitter and combiner (70 and 100) can be realized by using TEM mode wave propagation to edge guide mode wave propagation conversion performed by...
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5153537 |
Electric power transmission system for hyperfrequencies having a gyromagnetic effect
An electric power transmission system for hyperfrequencies having a gyromagnetic effect. The system includes a gyrator device having at least one disc-shaped wafer of gyromagnetic material such as...
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5144266 |
Broadband high frequency active MMIC circulator
A broadband high frequency active MMIC circulator which includes low parasitic devices (MESFETs or HEMTs) and shunt feedback for impedance contouring in conjunction with a cascode/cascade...
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5129099 |
Reciprocal hybrid mode RF circuit for coupling RF transceiver to an RF radiator
A reciprocal transceiver to radiator coupling circuit uses both microstrip and waveguide modes of RF signal transmission (including a pair of nonreciprocal hybrid mode phase shifters) to gain size...
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5128635 |
High power ferrite circulator having heating and cooling means
A high power, high frequency, Y-junction three port circulator containing at least one metal plate in the Y-junction covered with ferromagnetic material and an external magnet producing a magnetic...
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5119046 |
Asymmetrically shaped jacketed coaxial electrical transmission line
An asymmetrically shaped jacketed coaxial electrical cable having a drain wire in which the drain wire is aligned parallel to the asymmetric edge or corner of the cable for fast and accurate...
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5117207 |
Monolithic microwave airbridge
A monolithic microwave switch matrix includes fully monolithic construction for crossovers as well as switches and input transmission lines configured as lumped equivalent transmission lines for...
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5101179 |
Y-connected three port circulator
A "Y" connected three port circulator is disclosed having three transmission mediums interconnected at a bias terminal to form a reciprocal "Y" connection having three distal terminals; a capacitor...
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5068629 |
Nonreciprocal circuit element
A nonreciprocal circuit element including a ferrite assembly which ha a pair of ferrite members and a plurality of central conductors interposed between the ferrite members, and a dielectric...
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5063363 |
Electromagnetic energy radiation pick-up
A pick-up for electromagnetic energy radiation guided between at least two parallel ground plates includes a plane conductive tongue positioned between the two ground plates in a plane parallel to...
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5045819 |
Multilayer-multiconductor microstrips for digital integrated circuits
A multilayer-multiconductor microstrip circuit having reduced dimensions and minimal pulse distortion and crosstalk for high-speed, high-density digital application is created utilizing a...
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