摘要:
A method of manufacturing a non-reciprocal component including a casing having an input/output terminal and a ground terminal formed therein, a ferrite plate, a line conductor, and a magnet disposed in the casing, and an upper yoke and a lower yoke provided at the top face and the bottom face of the casing, respectively. In the non-reciprocal component, the casing is insert-molded with the lower yoke so that a portion of the casing penetrates through the lower yoke. A side of the component is defined partly by the lower yoke and partly by the penetrating portion of the casing. An input/output terminal and a ground terminal in the casing are defined by respective portions of a molded hoop material.
摘要:
A nonreciprocal circuit device which can be miniaturized, and can achieve low insertion loss, having plate-like capacitors disposed vertically. Single plate capacitors are arranged vertically so that their electrode faces are at an angle of 90 degrees to a ferrite, and in addition, their bottom faces are at a position above the bottom half of the thickness of the ferrite, or more preferably, at a position higher than the top face of the ferrite.
摘要:
A non-reciprocal component includes a casing having an input/output terminal and a ground terminal formed therein, a ferrite plate, a line conductor, and magnetic stored in the casing, and an upper yoke and a lower yoke provided at the top face and the bottom face of the casing, respectively. In the non-reciprocal component, the casing is insert-molded with the lower yoke.
摘要:
A nonreciprocal circuit device, which includes a permanent magnet; a ferrite to which a DC magnetic field is applied by the permanent magnet; a plurality of center electrodes extending from a first major surface of the ferrite to a second major surface of the ferrite via side surfaces of the ferrite; a ground plate disposed on the second major surface side of the ferrite and electrically connected to the plurality of center electrodes; a plurality of matching capacitors electrically connected between the ground plate and port sections of the plurality of center electrodes respectively; and at least one of the matching capacitors being disposed such that the capacitor electrode face thereof and the ferrite form an angle in a range of 60 degrees to 120 degrees.
摘要:
A highly reliable nonreciprocal circuit device facilitating incorporation of matching capacitors and a communication apparatus incorporating the same are disclosed. In the nonreciprocal circuit device, central conductors are integrally extended from a ground plate abutting on the bottom of a ferrite plate to be mutually crossed on the upper surface of the ferrite plate via an insulation sheet after passing over the side surfaces of the ferrite plate. Matching capacitors are connected by soldering between capacitor-connecting terminals integrally extended from the ground plate and the ports of the central conductors in such a manner that electrode surfaces of the matching capacitors are set perpendicularly with respect to a main surface of the ferrite plate.
摘要:
A nonreciprocal circuit device having a circuit element on a dielectric substrate providing at least part of a low-pass filter, the nonreciprocal circuit device having less interference and irregular operation caused by spurious radiation, and in addition, with reduced insertion loss. A lumped constant isolator (an example of a nonreciprocal circuit device) includes a magnet provided for applying a DC magnetic field to a magnetic assembly, which in turn has multiple intersecting central electrodes provided adjacent to a ferrite body. A dielectric substrate is disposed in between the permanent magnet and the magnetic assembly. An inductor forming part of a &pgr;-type low-pass filter is provided as an example of a circuit element on the dielectric substrate, a dielectric layer or film being disposed between the dielectric substrate and the magnet.
摘要:
A nonreciprocal circuit device which can achieve miniaturization and cost reduction by increasing attenuation outside a passband and greatly decreasing the occurrence of extraneous radiation emissions. The nonreciprocal circuit device comprises: a magnetic circuit comprising a permanent magnet disposed in a yoke; a magnetic member; a magnetic assembly disposed in the magnetic circuit and having a plurality of central conductors disposed on the magnetic member so as to mutually intersect; a plurality of matching capacitors connected respectively between a port of each of the central conductors and a ground terminal; a resin case containing the magnetic assembly and the matching capacitors and having an input/output terminal and said ground terminal; and a spacer for stably supporting at least the magnetic assembly and the matching capacitors in the case; wherein the spacer includes a filter inductor and a filter capacitor; the filter inductor is connected between said port of one of the central conductors and an input/output terminal corresponding to the port; the filter capacitor is connected between said input/output terminal and said ground; whereby a low-pass filter is formed by the filter inductor, the filter capacitor, and the matching capacitor.
摘要:
A nonreciprocal circuit device requires less layout space when single-board capacitors are used, and meets demands for a smaller and lighter configuration. An isolator (nonreciprocal circuit device) comprises a ferrite, a permanent magnet applying a direct current magnetic field to the ferrite, a plurality of central electrodes respectively having ports disposed on the ferrite and a single-based matching capacitor with capacitor electrodes formed on both surfaces of a dielectric substrate such that the capacitor electrodes are opposed to each other and sandwich the dielectric substrate. In various embodiments, the permanent magnet and/or; the ferrite has a square shape and the capacitor electrodes of the matching capacitors are arranged at an angle of 60 to 90 degrees with respect a mounting surface and the matching capacitors are disposed so as to surround the sides of the ferrite.
摘要:
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 opposed to each other on both main surfaces of a dielectric substrate with the substrate in between. An outer peripheral edge of a ground electrode (or another connected electrode), to which a capacitor electrode of the single-board-type capacitor is connected, is positioned inwardly from an outer peripheral edge of the capacitor electrode.
摘要:
A nonreciprocal circuit device that avoids the problems of increased loss and narrowed frequency bandwidth when used with a low power supply voltage. An isolator (nonreciprocal circuit device) has a plurality of center electrodes (2 through 4) disposed so as to intersect and having a ferrite (5) disposed in alignment with the point of intersection, to which a DC magnetic field HDC is applied. An impedance conversion circuit (6) is added to the port of any one of center electrodes (2 through 4), setting the input impedance Zi to 2