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7385454 |
Ferrite housing for microwave devices
A ferrite housing is provided that includes a body for receiving at least one ferrite element therein and a plurality of mounting portions extending from and forming part of the body.
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7382209 |
Non-reciprocal circuit device
There is provided a non-reciprocal circuit device which is suitable for a reduction in height, an increase in a mechanical securing strength and a reduction in a number of components, and has a...
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7365616 |
Non-reciprocal element with three central conductors and communication apparatus using the same
A non-reciprocal element with three central conductors and a communication apparatus are disclosed, in which the insertion loss is small and the bandwidth is wide. Three central conductors are...
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7362195 |
Ferro magnetic metal-insulator multilayer radio frequency circulator
A directional R.F. circulator directs radio frequency signals without an external biasing magnetic field. Layers of ferromagnetic materials and insulating materials form a laminated nano-structure....
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7336140 |
Low temperature co-fired ceramic-metal circulators and isolators
A low temperature cofired ceramic-metal (LTCC-M) integrated circulator comprises at least one ferrite disk situated in a magnetic field. The magnetic field is created by a magnet and directed by a...
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7319369 |
Non-reciprocal circuit element and communication device
A non-reciprocal circuit element includes permanent magnets, a ferrite having center electrodes, a circuit substrate on which the permanent magnets and the ferrite are disposed, and an annular...
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7292120 |
Nonreciprocal circuit device and communication device
A nonreciprocal circuit device and a communication device having a nonreciprocal circuit device in which each end portion of each center electrode in the bottom layer of a multilayer-electrode...
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7286025 |
Circulator element
A technique for improving a circulator element for its temperature characteristic is provided. A circulator element including a garnet type ferrite material, and a permanent magnet for applying a...
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7280004 |
Latching ferrite waveguide circulator without E-plane air gaps
An apparatus, system, and method of and for a microwave circulator. The apparatus, system, and method includes a non-reciprocal element for coupling microwaves from an input port to at least one...
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7265643 |
Tunable isolator
A tunable isolator is provided. At least one of the matching circuits for the isolator may be patterned or placed on a common substrate with the isolator. Additionally, at least one of the matching...
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7253697 |
Two-port isolator and communication apparatus
A two-port isolator includes a first center electrode and a second center electrode which are wound around a ferrite to which a direct-current magnetic field is applied from permanent magnets, and...
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7253696 |
Bi-crystal heterostructure electronic isolator
A bi-crystal heterostructure includes a first, substantially uniaxial, crystal layer; a second, substantially uniaxial, crystal layer positioned adjacent to the first crystal layer, and wherein the...
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7242264 |
Method and apparatus of obtaining broadband circulator/isolator operation by shaping the bias magnetic field
Disclosed is one method and one apparatus which teach improved techniques in using a shaped bias magnetic field over the active region of a ferrite stripline circulator/isolator circuit. The axial...
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7242263 |
Transformer-free waveguide circulator
An improved waveguide circulator that eliminates the need for quarter-wave dielectric transformers or impedance steps in the interface waveguide for broadband operation is described. The circulator...
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7239214 |
Two-port non-reciprocal circuit device and communication apparatus
A two-port non-reciprocal circuit device has one end of a first central electrode electrically connected to an input port and the other end thereof electrically connected to an output port. One end...
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7230507 |
Compact waveguide isolator
An improved waveguide isolator that eliminates the transitions to air-filled waveguides between ferrite elements and absorptive load elements is described. The waveguide isolator in accordance with...
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7227427 |
Three-port nonreciprocal circuit device, composite electronic component, and communication apparatus
A center-electrode assembly ( 13 ) has a configuration in which center electrodes ( 21 ) to ( 23 ) are arranged, in an electrically insulated state, at the upper surface of a circular-plate...
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7206116 |
Faraday rotator
A Faraday rotator for a Faraday isolator with an input polarizer, with an output polarizer, with a roller-shaped optical crystal that is arranged therebetween and that is arranged symmetrical to...
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7196593 |
Microwave circulator with deformable membrane
A circulator comprises a housing in two halves with a ferrite and associated magnet in a central portion of a first one of the halves, the second housing-half above the ferrite having a membrane...
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7176767 |
Multi-junction waveguide circulator with elements having no discontinuities
An improved multi-junction waveguide circulator that eliminates the transitions to dielectric transformers and air-filled waveguides between ferrite elements is described. The waveguide circulator...
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7170362 |
Ferrite circulator having alignment members
A ferrite circulator having integrated alignment members and a method for aligning a ferrite element within a ferrite circulator are provided. The ferrite circulator includes a ferrite circulator...
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7138937 |
Radar system having low-profile circulator
A circulator comprises first and second couplers. The first and second couplers are coupled by first and second transmission lines. First and second magnetic fields are provided crossing the first...
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7138883 |
Non-reciprocal circuit element
In a non-reciprocal circuit element, capacitors are disposed on a bottom surface of a dielectric facing a ferrite member in a state in which first electrodes are connected to port portions serving...
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7095291 |
Resonant structure and method for lumped element in nonreciprocal device
A structure according to the present invention relates to the non-reciprocal microwave device such as circulator/isolator and includes the circuit, a ferrite member and a dielectric film. The...
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7091798 |
Notch filter system and method
A circulator is used as a notch filter having a notch at a notch frequency band outside its frequency band of operation as a circulator. It has been observed that circulators operate as a notch...
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7078983 |
Low-profile circulator
A circulator comprises first and second couplers. The first and second couplers are coupled by first and second transmission lines. First and second magnetic fields are provided crossing the first...
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7057471 |
Non-reciprocal device
The present invention is directed to a non-reciprocal device whose use makes it possible to reduce the insertion loss, and the size and thickness of its body, and broaden the frequency band treated...
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7049900 |
Multi-junction waveguide circulator using a single control wire for multiple ferrite elements
An improved multi-junction waveguide circulator that eliminates the transitions to dielectric transformers and air-filled waveguides between ferrite elements is described. The elimination of the...
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7009465 |
Isolator including small matching capacitors, and communication apparatus including the isolator
In an isolator, a common electrode is disposed on a first surface of a magnetic plate. On a second surface of the magnetic plate, first, second, and third center conductors are disposed crossing...
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7005937 |
Circulator and method of manufacture
A method of manufacturing a circulator comprising the steps of providing a central substrate layer with at least one cut-out section and circuit lines. Next, providing a magnet placed within said...
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7002426 |
Above resonance isolator/circulator and method of manufacture thereof
An above resonance circulator/isolator and method for manufacturing the same is described. In one implementation, the above resonance circulator/isolator includes a magnet, a spacer, a single...
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6998912 |
High-frequency composite switch module and mobile communication device using the same
A high frequency composite switch module for a mobile communication device, wherein high frequency circuits such as a power amplifier, a circuit functioning as a transmitter/receiver switching...
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6996419 |
Consolidating signals for an antenna system
A communication system that includes an antenna system and a consolidation system is provided. The consolidation system has a first terminal and a second terminal. The second terminal is connected...
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6992540 |
Two-port isolator and communication device
A two-port isolator includes a microwave ferrite member, first and second center electrodes that intersect with each other on the ferrite member with isolation therebetween, a permanent magnet that...
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6989719 |
Non-reciprocal circuit element with reduced shift of center frequency of insertion loss with change in temperature and communication device
A non-reciprocal circuit element includes a magnetic plate, a common electrode, a first main segment, a second main segment, a third main segment, and a magnet opposing to the magnetic plate and...
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6987426 |
Nonreciprocal circuit element with input and output characteristic impedances matched
A nonreciprocal circuit element includes a magnetic plate, a common electrode on a first surface of the magnetic plate, and first, second, and third central conductors each including a pair of...
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6982608 |
Isolator suitable for miniaturization
An isolator suitable for miniaturization due to a reduction in the size of a capacitor is provided. The isolator includes a flat plate-shaped ferrite member 4 , and first, second, and third...
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6977559 |
Nonreciprocal circuit element with notch part in yoke
Provided is a nonreciprocal circuit element which has increased lengths of central conductors to be compatible with miniaturization while exhibiting superior performance. In the nonreciprocal...
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6970679 |
Method of detecting a redirection or relaying of a contactless data transmission using at least two sequentially driven transmitting antennas
A method detects relaying of a contactless data communication by a radio amplifier for intercepting and manipulating the communication to achieve an unauthorized authentication. The method involves...
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6968609 |
Nonreciprocal circuit device, communication device, and method of manufacturing nonreciprocal circuit device
A nonreciprocal circuit device, in which metal members which form a metal case can be resistance-welded stably and reliably, having high reliability and satisfactory characteristics, a...
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6965277 |
Two-port non-reciprocal circuit device, composite electronic component, and communication apparatus
In a two-port non-reciprocal circuit device, connecting portions of a first central electrode are electrically connected to first and second balanced input terminals, respectively. Likewise,...
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6965276 |
Two port type isolator and communication device
A two-port isolator capable of suppressing propagation of the second harmonic wave ( 2 f ) or the third harmonic wave ( 3 f ) of the used frequency f includes a parallel RC circuit, which includes...
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6955553 |
Non-reciprocal device
The present invention is directed to a non-reciprocal device which easily secures the same planarity in the bottom surfaces of the external terminals and the case bottom surface. The case 7 ...
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6943642 |
Nonreciprocal circuit element and method of manufacturing the same
A nonreciprocal circuit element includes a magnetic plate having through holes; center conductors crossing each other at a predetermined angle on a side associated with a first surface of the...
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6943641 |
Small non-reciprocal circuit element with good productivity
A non-reciprocal circuit element includes first, second, and third central conductors, which are formed of thin films or thick films. Each of the first, second, and third central conductors...
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6940360 |
Two-port isolator and method for evaluating it
A two-port isolator comprising a thin ferrite plate, a permanent magnet for applying a static magnetic field to the thin ferrite plate, first and second central conductors disposed substantially in...
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6935002 |
Method of manufacturing a nonreciprocal circuit device
A method of manufacturing a nonreciprocal circuit device is performed such that matching capacitors are formed of single-board-type capacitors including capacitor electrodes formed so as to be...
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6933799 |
Method of controlling intermodulation distortion of non-reciprocal device
A non-reciprocal device includes at least one ferrimagnetic member ( 21 or 22 ). By controlling the FMR linewidth ΔH of the ferrimagnetic members ( 21 and 22 ), intermodulation distortion is...
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6930566 |
Small nonreciprocal circuit element that can be easily wired
A nonreciprocal circuit element of the present invention comprises a first yoke and a second yoke that form a magnetic closed circuit. A plurality of chip capacitors with a first electrode and a...
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6930564 |
Providing controllable impedance at a reference plane in a circuit
Apparatus for providing a controllable impedance at a reference plane in a circuit comprises a unidirectional transmission line loop having first and second input/output terminals. The first...
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