| Patent Number |
Title Of Patent |
Date Issued |
| 7365616 |
Non-reciprocal element with three central conductors and communication apparatus using the same |
April 29, 2008 |
| 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 cross each other in a |
| 6696901 |
Concentrated constant irreciprocal device |
February 24, 2004 |
| A concentrated constant, non-reciprocal device comprising a permanent magnet for applying a DC magnetic field to a ferrimagnetic body, an assembly in which at least a part of a plurality of center conductors one end of which serves as a common terminal and the other of which serves as |
| 5168254 |
Magnetostatic wave device with minimized higher order mode excitations |
December 1, 1992 |
| A magnetostatic wave device has a nonmagnetic substrate, a magnetic thin film formed on the nonomagnetic substrate, and a plurality of electrodes. By applying a magnetic field from the outside in parallel with or perpendicularly to the magnetic thin film, a magnetostatic wave is excited |
| 5053734 |
Magnetostatic wave device |
October 1, 1991 |
| A magnetostatic wave device comprises a magnetic thin film formed on a non-magnetic substrate, one or a plurality of electrode fingers and pad electrodes formed on the above described magnetic thin film, a magnetostatic wave resonator for exciting and propagating a magnetostatic wave |
| 5048937 |
Faraday rotator device and optical switch containing same |
September 17, 1991 |
| A Faraday rotator device containing (a) a Faraday rotator, (b) a wire winding encircling the Faraday rotator for changing the magnetization state of the Faraday rotator, and (c) a hollow yoke surrounding the Faraday rotator and the wire winding for forming a substantially closed magn |
| 4992760 |
Magnetostatic wave device and chip therefor |
February 12, 1991 |
| A chip for a magnetostatic wave device comprising; a base substrate consisting of a dielectric monocrystalline base plate and a ferrimagnetic monocrystalline film formed on the base plate; an excitation means for magnetostatic waves formed on the ferrimagnetic film when it is given a |
| 4983937 |
Magnetostatic wave band-pass-filter |
January 8, 1991 |
| A magnetostatic wave band-pass-filter is disclosed which uses a planar structure, it has, a single crystal thin film formed on a single crystal gadolinium gallium garnet substrate and mainly containing yttrium iron garnet. In this band-pass-filter, input and output electrodes each made u |
| 4943790 |
Resonance absorption-type microstrip line isolator |
July 24, 1990 |
| A resonance absorption-type microstrip line isolator including a ground conductor; a magnetic member provided on the ground conductor; and a central conductor provided on the magnetic member, portions of the magnetic member on both sides of the central conductor being magnetized oppo |
| 4865429 |
Apparatus for suppressing backward propagation along an optical path, comprising magnetic config |
September 12, 1989 |
| An optical isolator comprising a cylindrical magnet magnetized in a direction parallel to the axis of rotational symmetry thereof, a Faraday rotator disposed in a center space of the cylindrical magnet, a pair of beam splitters capable of serving as a polarizer or an analyzer arranged |
