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| Number | Title | Issue Date |
| 8102220 | Non-reciprocal circuit device A non-reciprocal circuit device includes a ferrite arranged to receive a direct-current magnetic field from a permanent magnet, a first central electrode and a second central electrode arranged on the ferrite. The non-reciprocal circuit device further includes match... | 01/24/2012 |
| 8058945 | Ferrite magnet device, nonreciprocal circuit device, and composite electronic component A ferrite magnet device, a nonreciprocal circuit device, and a composite electronic component are provided. The ferrite magnet device includes a ferrite element having a plurality of central electrodes arranged to intersect one another in an electrically insulated s... | 11/15/2011 |
| 7859358 | Non-reciprocal circuit device A nonreciprocal circuit device has a structure that allows a direct current magnetic field having an even density to be applied to a necessary portion of a ferrite without impairing a reduction in profile so as to improve insertion loss. The nonreciprocal circuit de... | 12/28/2010 |
| 7859357 | Non-reciprocal circuit device A non-reciprocal circuit device includes a yoke that is small-sized, has a simple structure, has sufficient adhesive strength, and can achieve favorable performance characteristics. The non-reciprocal circuit device includes a planar yoke, permanent magnets, a ferri... | 12/28/2010 |
| 7834717 | Nonreciprocal circuit device A nonreciprocal circuit device (2-port isolator) includes a ferrite-magnet assembly including a ferrite, a first center electrode, and a second center electrode. The ferrite is sandwiched between a pair of permanent magnets and receives a direct-current magnetic fie... | 11/16/2010 |
| 7834716 | Nonreciprocal circuit device A nonreciprocal circuit device (2-port isolator) includes a ferrite-magnet assembly including a ferrite, a first center electrode, and a second center electrode. The ferrite is sandwiched between a pair of permanent magnets and receives a direct-current magnetic fie... | 11/16/2010 |
| 7830222 | Non-reciprocal circuit device A non-reciprocal circuit device capable of preventing and minimizing disturbances in magnetic field distribution in a ferrite to thereby improve insertion loss characteristics and isolation characteristics includes a ferrite to which a DC magnetic field is applied b... | 11/09/2010 |
| 7825744 | Nonreciprocal circuit device A nonreciprocal circuit device attenuates unnecessary waves having a higher frequency than that of a fundamental wave, without increasing insertion loss. The nonreciprocal circuit device in the form of a 2-port type isolator includes a ferrite on which a first centr... | 11/02/2010 |
| 7821351 | Irreversible circuit element An irreversible circuit element is configured by including a magnetic substance, a plurality of central conductors L1 to L3, one ends of which are connected to different input/output ports, arranged on the magnetic substance so as to intersect each oth... | 10/26/2010 |
| 7808339 | Non-reciprocal circuit element A non-reciprocal circuit element (for example, a 2-port isolator) includes a tabular yoke, permanent magnets, a ferrite to which a direct current magnetic field is applied from the permanent magnets, a first center electrode and a second center electrode disposed on... | 10/05/2010 |
| 7737801 | Non-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 the ground; a first capacitance element con... | 06/15/2010 |
| 7679470 | Nonreciprocal circuit device A nonreciprocal circuit device includes a permanent magnet, a ferrite to which the permanent magnet applies a direct-current magnetic field, first and second central electrodes arranged on the ferrite, and a circuit board. The first central electrode includes electr... | 03/16/2010 |
| 7623003 | Drive method for driving element having capacity impedance, drive device, and imaging device Three devices such as electric charge-coupled devices are each included in one of three phase impedance circuits composing a 3-phase LC resonance circuit as a device having a capacitive impedance. A driver circuit applies either of a logic level of 0, a high-impedan... | 11/24/2009 |
| 7532084 | Nonreciprocal circuit element A non-reciprocal circuit element capable of improving an isolation characteristic without increasing an insertion loss includes a permanent magnet, a ferrite arranged to receive a direct-current magnetic field from the permanent magnet, and first and second center e... | 05/12/2009 |
| 7522013 | Non-reciprocal circuit device A non-reciprocal circuit device comprising a first inductance element connected between a first input/output port and a second input/output port, a second inductance element connected between the second input/output port and the ground, a first capacitance element c... | 04/21/2009 |
| 7443262 | Two-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 |
| 7432777 | Non-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 |
| 7429901 | Non-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 |
| 7420435 | Non-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 |
| 7420405 | Electronic isolator The present invention is an electronic isolator that provides low input to output insertion loss, high output to input insertion loss, and substantial asymmetric isolation between a source circuit and a load circuit. The invention actively reduces noise and reflecte... | 09/02/2008 |
| 7394330 | Non-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 |
| 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. ... | 06/10/2008 |
| 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 improvement in the yield of assembly, a sufficiently reduction in the ma... | 06/03/2008 |
| 7382211 | Non-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 |
| 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 arranged in proximity to a ferrite thin plate in such a manner as to cros... | 04/29/2008 |
| 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. The layers are selected to have a thickness smaller than the wavelen... | 04/22/2008 |
| 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 ferrous base plate acting as a magnetic return path. A conductor junc... | 02/26/2008 |
| 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 yoke. The circuit substrate has substantially rectangular surfaces. The p... | 01/15/2008 |
| 7307489 | Non-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 ... | 12/11/2007 |
| 7304549 | Method and apparatus for dual use of singly and doubly terminated networks Methods and apparatus are provided for efficiently coupling singly terminated networks with doubly terminated networks. An isolation network is disposed between a singly terminated network and a doubly terminated network. The isolation network is a three terminal de... | 12/04/2007 |
| 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 structure on a surface of ferrite is thickened by forming a filled-in ele... | 11/06/2007 |
| 7292121 | RF combining device and method Two or more reflective isolator elements are joined at their outputs to produce an RF combining structure. An RF circulator element is used for each input RF signal as a reflective isolator element to provide a different phase delay according to the direction of pro... | 11/06/2007 |
| 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 direct-current magnetic field to the garnet type ferrite material, whe... | 10/23/2007 |
| 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 output port, wherein the non-reciprocal element is capable of isolating... | 10/09/2007 |
| 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 circuits includes a ferro-electric tunable component for tuning the ... | 09/04/2007 |
| 7256661 | Multi-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... | 08/14/2007 |
| 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 the ferrite is mounted on a circuit board having built-in matching ci... | 08/07/2007 |
| 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 first and second crystal layers have mutually opposite rotations of ... | 08/07/2007 |
| 7245192 | Coupler with edge and broadside coupled sections Couplers are disclosed that include first and second mutually coupled conductors. The coupled conductors may be regular or irregular in configuration, and for example, may be linear, including rectilinear or with one or more curves, bends or turns, such as forming a... | 07/17/2007 |
| 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 designs in the prior art all require impedance matching elements out... | 07/10/2007 |
