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Class 333/1.1 - Nonreciprocal gyromagnetic type (e.g., circulators)


Subclass of Class 333 - Wave transmission lines and networks
Definition: Systems which include gyromagnetic elements for effecting
No. of patents: 448
Last issue date: 05/22/2012


1                      
NumberTitleIssue Date
8183952Surface mountable circulator
The present invention is directed to a surface mountable circulator/isolator device that includes a first dielectric layer having an electric circuit formed thereon. A second center dielectric layer is disposed adjacent the first dielectric layer, the center dielect...
05/22/2012
8183953Multi-junction stripline circulators
A multi-junction stripline circulator, comprising a housing with a cavity structure and a plurality of stripline junction circuits stacked within the cavity structure and connected in a cascade arrangement. Each stripline junction circuit comprises a stripline condu...
05/22/2012
8138848Circulator/isolator with an asymmetric resonator
The present invention is directed to a circulator device that includes a housing defining an interior three-dimensional volume. The housing includes a plurality of port openings disposed therein. A gyromagnetic resonator stack is disposed in the housing. The gyromag...
03/20/2012
8134422Non-reciprocal circuit device
A non-reciprocal circuit device comprising a ground plate having pluralities of external projections, a resin member having a hole through which the ground plate is exposed, a garnet plate disposed in the hole of the resin member, a microstrip line member disposed o...
03/13/2012
8058944Microwave circulators
A microwave circulator having an outer metal housing with a cavity containing at least one magnet and an annular centring arrangement interposed between the outside of the magnet and the cavity. The centring arrangement includes first and second solid metal rings, t...
11/15/2011
8040199Low profile and compact surface mount circulator on ball grid array
A surface mount circulator. The novel circulator includes a substrate, a predetermined number of microstrip lines disposed on a first surface of the substrate, a ground layer and a predetermined number of electrical contacts disposed on the second surface of the sub...
10/18/2011
8022783Non-reciprocal circuit element
The invention relates to a non-reciprocal circuit element (1) having a plurality of strip conductor elements (2) insulated electrically from one another, which conductor elements are embedded in a multilayer core (3) of ferrimagnetic material an...
09/20/2011
7978018Non-reciprocal circuit device
A non-reciprocal circuit device comprising a magnetic plate F1; center conductors L1, L2, and L3 that are mutually insulated and disposed so as to intersect on magnetic plate F1; a plane conductor P1 that is disposed facing ...
07/12/2011
7936231Circulator/isolator housing with inserts
A circulator/isolator housing is provided that includes body and a plurality of slots within the body configured to receive therethrough inserts having magnetic permeability. The housing further includes a plurality of receiving portions within the body correspondin...
05/03/2011
7936230Non-reciprocal component and method for making and using the component in a mobile terminal
The invention relates to a non-reciprocal component comprising: a ferrite substrate having a first side and an opposing second side located on a ground layer, a first metal line and a second metal line are located on the ferrite substrate in parallel to each other. ...
05/03/2011
7915971Nonreciprocal circuit device
A nonreciprocal circuit device includes a ferrite-magnet element having ferrite provided with first and second central electrodes intersecting each other in an insulated manner and two permanent magnets arranged to sandwich the ferrite to apply a DC magnetic field t...
03/29/2011
7907030Integrated circulators sharing a continuous circuit
The present invention is directed to a circuit assembly that includes an integrated circulator assembly. The circuit assembly has a first substrate, which contains a continuous circuit trace that includes a circulator component from the circulator assembly and at le...
03/15/2011
7816994Microwave circulator with thin-film exchange-coupled magnetic structure
A microwave circulator uses a thin-film exchange-coupled structure to provide an in-plane magnetic field around the circulator. The exchange-coupled structure is a ferromagnetic layer having an in-plane magnetization oriented generally around the circulator and an a...
10/19/2010
7816995Circulator canceller with increased channel isolation
A system includes a first circulator, a second circulator connected to the first circulator and a load, a third circulator connected to the second circulator, and a filter connected between the first and third circulators. The filter modifies the phase and amplitude...
10/19/2010
7772937Circulator/isolator housing with inserts
A circulator/isolator housing is provided that includes body and a plurality of slots within the body configured to receive therethrough inserts having magnetic permeability. The housing further includes a plurality of receiving portions within the body correspondin...
08/10/2010
7746188Integrated non-reciprocal component
The invention relates to a non-reciprocal component comprising a first dielectric part (11) and a ferrite substrate (12) located on the same level, a ground layer (18) is located below the ferrite substrate (12), a metal line arrangement ...
06/29/2010
7746189Waveguide circulator
A waveguide circulator comprising at least three waveguide arms intersecting at a junction, at least one ferrite element positioned within the junction, an impedance transformer and a recessed transformer. At least a portion of each of the at least three waveguide a...
06/29/2010
7683731Ferrite waveguide circulator with thermally-conductive dielectric attachments
The present invention improves the geometry of ferrite circulators in order to increase the average power handling by decreasing the temperature rise in the ferrite and associated adhesive bonds. Embodiments of the present invention utilize dielectric attachments on...
03/23/2010
7659792Circulator device and a method for assembly
The present invention is directed to a circulator/isolator device that includes a housing having a substantially planar base portion integrally connected to a segmented flexible wall structure extending in a direction normal thereto. The substantially planar base po...
02/09/2010
7626471Non-reciprocal circuit device
A non-reciprocal circuit device comprising a first inductance element L1 disposed between a first input/output port P1 and a second input/output port P2, a first capacitance element Ci parallel-connected to the first inductance element L1...
12/01/2009
7609124Non-reciprocal circuit device
A non-reciprocal circuit device comprising a metal case, a ground plate disposed on an inner bottom surface of the metal case, a resin member disposed on the ground plate and having an opening from which the ground plate is exposed, a planar microwave ferrite member...
10/27/2009
7570128Integrated non-reciprocal component comprising a ferrite substrate
The invention relates to a non-reciprocal component (10) comprising: a ferrite substrate (11) having a first side (1-″) and an opposing second side (16) located on a ground layer (18), a first metal line (12) and a second ...
08/04/2009
7567141Nonreciprocal circuit device and communication apparatus
A nonreciprocal circuit device includes permanent magnets, a ferrite core to which a DC magnetic field is applied from the permanent magnets, center electrodes disposed on the ferrite core, a circuit substrate, a magnetic yoke, and an electromagnetic shield plate. T...
07/28/2009
7561003Multi-junction waveguide circulator with overlapping quarter-wave transformers
An improved multi-junction waveguide circulator overlaps two quarter-wave dielectric transformer sections so that the transitional sections occur concurrently in the same length of waveguide. Consequently, the two quarter-wavelength sections require a total length o...
07/14/2009
7522012Nonreciprocal circuit device and manufacturing method of the same
A nonreciprocal circuit device includes permanent magnets, a ferrite to which a direct current magnetic field is applied by the permanent magnets, first and second central electrodes arranged on the ferrite, and a circuit substrate. A ferrite-magnet assembly mounted...
04/21/2009
7495521Multi-channel circulator/isolator apparatus and method
A multi-channel circulator or isolator well suited for use in phased array antennas or other RF devices where space and packaging constraints make the implementation of a conventional circular or isolator difficult or impossible. The multi-channel circulator/isolato...
02/24/2009
7453326Nonreciprocal circuit device
A nonreciprocal circuit device includes a ferrite to which a direct magnetic field is applied using permanent magnets, central electrodes arranged on the ferrite, and a circuit substrate. The first central electrode is made of conductive films, and the second centra...
11/18/2008
7443262Two-port isolator, characteristic adjusting method therefor, and communication apparatus
A two-port isolator includes a metal case having an upper metal case portion and a lower metal case portion, a resin case integrated with the case, a permanent magnet member, a center electrode assembly including a ferrite member and center electrodes, and a laminat...
10/28/2008
7432777Non-reciprocal circuit element, composite electronic component, and communication apparatus
An isolator includes five center electrodes coupled at radio frequencies to a ferrite member to which a DC bias magnetic field is applied from a permanent magnet. First and third electrodes do not intersect each other. The first and third electrodes intersect the se...
10/07/2008
7429901Non-reciprocal circuit element, composite electronic component, and communication apparatus
An isolator includes first, second, and third center electrodes coupled in a high frequency manner with a ferrite member to which a direct-current magnetic field is applied by a permanent magnet. The first and third electrodes do not intersect with each other, and i...
09/30/2008
7420435Non-reciprocal circuit element, method for manufacturing the same, and communication device
A non-reciprocal circuit element is equipped with a ferrite-magnet assembly which includes a pair of permanent magnets and a ferrite sandwiched between the permanent magnets. A first center electrode and a second center electrode defined by conducting films are prov...
09/02/2008
7397321Digitally controlled circulator and radio frequency identification reader having the same
Provided are a digitally controlled circulator and a radio frequency identification (RFID) reader having the circulator. A power splitter is composed of lumped elements and the values of the elements are digitally changed using switching means, in which the transmis...
07/08/2008
7394330Non-reciprocal circuit element
A magnetic rotor includes a soft ferrite substrate and a plurality of central conductors. The magnetic rotor is provided inside a casing. A permanent magnet is provided inside the casing, and disposed to overlap the magnetic rotor so as to apply a DC magnetic field ...
07/01/2008
7385454Ferrite 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. ...
06/10/2008
7382209Non-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 improvement in the yield of assembly, a sufficiently reduction in the ma...
06/03/2008
7382211Non-reciprocal circuit device
A non-reciprocal circuit device comprising a first inductance element disposed between a first input/output port and a second input/output port, a second inductance element disposed between the second input/output port and a ground, a first capacitance element const...
06/03/2008
7365616Non-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 arranged in proximity to a ferrite thin plate in such a manner as to cros...
04/29/2008
7366244Method and system for antenna interference cancellation
A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ...
04/29/2008
7362195Ferro 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. The layers are selected to have a thickness smaller than the wavelen...
04/22/2008
7362562Electronic unit of radio system and method of producing the same
The invention relates to a method of producing an electronic unit of a radio system automatically, an electronic unit of a radio system and an electronic component. The method of producing an electronic unit of a radio system automatically comprises mounting (802...
04/22/2008
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