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5870064 |
Signal transmission antenna mast
A ridged coaxial transmission line assembly including a plurality of parallel transmission paths is fabricated from an extrusion incorporating a plurality of slotted, longitudinal bores provided...
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5838209 |
Nonreciprocal junction circuit element having different conductor intersecting angles
A nonreciprocal circuit element having low insertion loss is provided. In the circuit element, three central conductors are disposed such that they intersect each other at specified angles in an...
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5828555 |
Multilayer printed circuit board and high-frequency circuit device using the same
A multilayer printed-circuit board includes at least one inner-layer signal line, first and second ground layers between which the inner-layer signal line is sandwiched via a frame member made of...
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5825268 |
Device with a nonradiative dielectric waveguide
A device with a nonradiative dielectric waveguide which operates in a microwave band or in a millimeter wave band. The device with a nonradiative dielectric waveguide is, for example, an...
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5821845 |
Electromagnetic noise absorber
Proposed is a reduction of variance in electromagnetic noise eliminating effect with signal conductors arranged in a flat cable to which an electromagnetic noise absorber is attached. The...
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5821830 |
Non-reciprocal circuit element
A non-reciprocal circuit element which meets the demand for a reduced size and a lower price. A circulator, which is a type of non-reciprocal circuit element, is constituted by a first central...
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5818315 |
Signal trace impedance control using a grid-like ground plane
Methods and apparatus for controlling signal line impedance in an electronic circuit board by altering the characteristics of a grid-like ground plane. The ground plane is arranged adjacent and...
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5815803 |
Wideband high isolation circulatior network
An isolation circulator network includes three circulators and a 180 degree ybrid coupler for isolating an RF transmitter from a nearby RF receiver. The isolation circulator network comprises: a...
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5815031 |
High density dynamic bus routing scheme
An improved signal line routing scheme includes a plurality of dynamic signal lines disposed in parallel to each other, and a plurality of static signal lines disposed in parallel to each other and...
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5805030 |
Enhanced signal integrity bus having transmission line segments connected by resistive elements
An arrangement in which resistors are interposed on a bus line to attenuate reflected spurious pulses. The resistors are positioned on the bus so as not to be between a processor and its cache...
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5789710 |
Reduced cross-talk wiring harness and method of accomplishing same
A reduce cross-talk wiring harness and method for accomplishing same. The wiring harness is used for routing signals from a bus and tag housing to a controller, and for routing signals back from...
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5786736 |
Non-reciprocal circuit element
A non-reciprocal circuit element which can be miniaturized while still providing a matching capacitance having a large value. A circulator, for example, has central electrodes and a multilayer...
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5781086 |
NRD guide circuit, radar module and radar apparatus
Dielectric circuit components such as a dielectric strip, dielectric blocks and dielectric ring inserted between conductive plates are molded from a thermoplastic material. As the thermoplastic...
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5776275 |
Fabrication of compact magnetic circulator components in microwave packages using high density interconnections
A magnetic circulator is incorporated into a multi-chip module using a microwave high density interconnect (HDI) structure. A prepackaged circulator can be inserted into a ready-made high density...
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5777526 |
Method of manufacturing a microstrip transmission device
A microstrip transmission line device wherein if there is a difference between absolute transmission delay times tpd of two signals to be transmitted over two strip conductors, for example, if a...
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5774024 |
Microwave non-reciprocal circuit element
A microwave non-reciprocal circuit element which is further miniaturized and of low losses without causing conductor losses in center electrodes following miniaturization. The microwave...
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5772820 |
Process for fabricating a microwave power device
Materials and methods for the fabrication of high density, low temperature fired microwave ferrites for use in microwave power devices, transmission line elements, isolators, circulators, and phase...
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5768690 |
Radio communication device with improved antenna duplexing apparatus
A radio communication device that performs time-sharing communication by switching between reception and transmission, comprises a circulator for guiding transmission signals to the antenna and...
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5748052 |
Nonreciprocal circuit element
A high-performance, small-sized nonreciprocal circuit element whose isolation characteristics are improved by making the reactances of the central electrodes uniform for every port. The circuit...
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5745015 |
Non-reciprocal circuit element having a magnetic member integral with the ferrite member
A non-reciprocal circuit element of reduced weight and manufactured at a lower cost without deteriorating the parallelism and the magnetic field distribution of a unidirectional magnetic field. The...
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5745014 |
Nonreciprocal circuit element
A nonreciprocal circuit element having low insertion loss is provided. In the circuit element, three central conductors are disposed such that they intersect each other at specified angles in an...
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5729183 |
Tuned guard circuit for conductive transmission lines on a printed circuit board
The present application describes a tuned guard circuit device and method for controlling impedance levels of transmission lines on a printed circuit board having at least one ground plane and at...
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5724010 |
Wideband "Y" Junction isolator/circulator at v-band
An improved broad band "Y" junction isolator/circulator at V-Band is disclosed. A "star"-shaped ferrite structure is positioned in the isolator housing. The ferrite structure comprises two...
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5709811 |
Magnetic material for microwave and high-frequency circuit component using the same
A magnetic material for microwave, comprising a phase having garnet structure, said phase comprising a component represented by Formula I (A 3 -a Bi a )B x O y Formula I ...
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5701595 |
Half duplex RF transceiver having low transmit path signal loss
A circulator section in a transceiver receives a transmit signal and an antenna signal and provides them respectively to an antenna and to an electronic switch. The electronic switch operates...
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5691987 |
Frequency-channel multiplexer and demultiplexer
A circuit of low complexity which selects arbitrary channels from a plurality of multichannel input signals and generates from a plurality of individual frequency channels a plurality of output...
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5682124 |
Technique for increasing the range of impedances for circuit board transmission lines
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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5674077 |
Interleaved connector circuit having increased backplane impedance
Connectors on a microcomputer printed circuit board backplane receive slotted insertion of a plurality of device cards containing application specific integrated circuits (ASICs). Interconnection...
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5675298 |
Low-loss, low-inductance interconnect for microcircuits
A low-loss, low-inductance metal interconnect for an electrical signal in a microcircuit comprises a plurality of spaced-apart generally parallel metal interconnect lines disposed in a plane over...
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5675299 |
Bidirectional non-solid impedance controlled reference plane requiring no conductor to grid alignment
A circuit board includes a plurality of signal conductors and a grid. The grid has a pattern of conductive material which forms cell structures oriented along a first axis. The grid pattern is...
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5673009 |
Connector for communication systems with cancelled crosstalk
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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5662754 |
Method of making a high frequency non-reciprocal circuit element
A high-frequency non-reciprocal circuit element comprises a high-frequency-use magnetic layer and a plurality of center electrodes arranged therein to intersect with each other while being...
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5652553 |
Signal transmission between modules connected to a common backplane
In a system having modules (20), voltage supply (15), signal transmission via terminated signal lines (13) and signal ground (14), the impedance of the signal lines (13) with respect to both the...
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5646368 |
Printed circuit board with an integrated twisted pair conductor
A multi-layered printed circuit board having an integrated twisted pair conductor. In a preferred embodiment, the printed circuit board comprises two segmented conductor traces on a first and a...
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5638033 |
Three port slot line circulator
A three port microwave circulator in a slot line transmission medium. Two slot lines are formed which extend from two ports of the circulator in a collinear alignment through a coupler region, and...
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5634208 |
Multilayer transmission line using ground metal with slit, and hybrid using the transmission line
A hybrid including a substrate, a first dielectric layer, a ground metal, and a second dielectric layer, which are stacked in this order. Transmission lines are formed below and above the ground...
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5620543 |
Method of manufacturing microwave magnetic material body
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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5618185 |
Crosstalk noise reduction connector for telecommunication system
A connector for communications systems includes four input terminals and four output terminals in ordered arrays. A circuit electrically couples respective input and output terminals and cancels...
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5611878 |
Method of manufacturing microwave circulator
A method of manufacturing a circulator includes the steps of forming, on at least one sheet (41, 42) of an insulating ferromagnetic material, dummy inner conductors (44a, 44b, 44c, 45a, 45b, 45e)...
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5608361 |
Advanced ring-network circulator
In an apparatus and method for forming an advanced ring-network circulator, a plurality of junctions are interconnected by a plurality of non-reciprocal phase shifters. Each junction has a...
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5603098 |
Integrated radiating and coupling device for duplex communications
An integrated radiating and coupling device (30) for a duplex communication radio (26) is formed using a ferrite body (36) having first and second surfaces. A multi-port circulator (40) is mounted...
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5600285 |
Monolithic stripline crossover coupler having a pyramidal grounding structure
A coupler for crossing striplines which would otherwise intersect in a region of the substrate includes an electrically conducting housing through which transmission lines are passed that couple...
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5557075 |
Parallel flexible transmission cable
A parallel flexible transmission cable accommodating three degrees of displacement and one degree of rotation. The cable has two connectors attached to a flexible, planar cable. A plurality of...
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5546057 |
Antenna/filter combiner
An antenna/filter combiner for connecting a plurality of frequency transmission signals to an antenna having an arrangement with n circulators connected in a waveguide with m transmission channels...
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5532655 |
Method and apparatus for AC/DC signal multiplexing
A method for using the same input/output pin on an integrated circuit ("IC") for both a high frequency AC signal and a DC signal simultaneously and a first circuit means to accomplish this...
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5519363 |
Controlled impedance lines connected to optoelectronic devices
A dielectric substrate of a material such as silicon is used to provide controlled impedance waveguides for coupling an optoelectronic device to an electronic device. The impedance is controlled by...
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5517487 |
System for increasing the capacity of existing local area networks that use shielded twisted wire pair medium
The data communication capacity of an existing local area network (LAN) 10 that uses a shielded twisted wire pair 16 as its transmission medium may be increased with the addition of special...
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5498999 |
High-frequency use non-reciprocal circuit element
A high-frequency use non-reciprocal circuit includes a sintered body which is a high-frequency use magnetic body obtained by a ceramic lamination/integral firing technique, a plurality of central...
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5495210 |
Miniaturized electronic device in particular with a gyromagnetic effect
A miniaturized electronic device including a substrate one surface of which carries a first pattern of metallic elements of electrical circuits and a second pattern of metallic elements of...
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5488201 |
Low crosstalk electrical signal transmission medium
A low crosstalk electrical signal transmission medium includes a plurality of input ends, a plurality of output ends and a plurality of signal transmission lines respectively electrically connected...
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