Abstract: A surface-mountable antenna unit including a dielectric substrate having a rectangular plane shape which is provided on a side surface and/or a bottom surface thereof with a ground electrode, and a radiator, provided with a radiating part having a substantially rectangular plane shape, which is fixed to the dielectric substrate so that the radiator is opposed to a top surface of the dielectric substrate, with a feed part provided on a side surface of a laminate which is formed by the dielectric substrate and the radiator.

Abstract: Coil electrodes having a U-shape and shield electrodes having a plane shape are formed on plural dielectric layers. The coil electrodes are connected via through holes which are formed through the dielectric layers, and a spiral electrode is formed. An earth terminal and an input/output terminal are drawn out from the coil electrode to the end portion of the dielectric layer. The shield electrodes are formed on both of the coil electrodes. The dielectric layers are laminated, and the shield electrode and the earth terminal are connected by an external electrode. An external electrode connected to the input/output terminal is formed. A band-pass filter is made by forming plural spiral electrodes and magnetically coupling the spiral electrodes.

Abstract: Two coil electrode patterns are formed on one surface of a plate containing a dielectric material. These coil electrode patterns are formed in a loop shape, and disposed in a magnetically connected state with each other. Input/output terminal patterns and earth terminal patterns are drawn out from the coil electrode patterns toward edges on different sides of the plate. The input/output terminal pattern and the earth terminal pattern of one coil electrode pattern are disposed at a selected distance from each other so as to provide a predetermined impedance. An earth electrode pattern is formed opposite the coil electrode patterns with the plate between them. Earth terminal patterns are connected to the earth electrode pattern. The earth terminal patterns of the earth electrode pattern are connected to the earth terminal patterns of the coil electrode patterns. A trimming electrode may be formed for adjusting the passing band frequency of the band-pass filter optionally.

Abstract: Two coil electrode patterns are formed on one surface of a plate consisting of a dielectric material. These coil electrode patterns are formed in a loop shape, and are disposed so as to be magnetically coupled with each other. Input/output terminal patterns and earth terminal patterns are drawn out from the coil electrode patterns toward an edge portion of the plate. The input/output terminal pattern and the earth terminal pattern of one coil electrode pattern are disposed at a selected at a distance so as to provide a predetermined impedance. An earth electrode pattern is formed opposite portion of the coil electrode patterns with the plate between them. Earth terminal patterns are formed to the earth electrode pattern. The earth terminal patterns of the earth electrode pattern are connected to the earth terminal patterns of the coil electrode patterns. A trimming electrode may be formed for adjusting the passing band frequency of the band-pass filter optionally.

Abstract: A coil electrode pattern is disposed on one surface of a plate consisting of a dielectric material. The coil electrode pattern is formed in a loop shape. An input/output terminal pattern and an earth terminal pattern are drawn out from the coil electrode pattern toward an end portion of the plate. The input/output terminal pattern and the earth terminal pattern are disposed at a distance from each other so as to provide a predetermined impedance. An earth electrode pattern is formed opposite the dielectric coil electrode pattern with the plate between them. An earth terminal pattern is formed to the earth electrode pattern. The earth terminal pattern of the earth electrode pattern is connected to the earth terminal pattern of the coil electrode pattern. A trimming electrode may be formed for adjusting the resonance frequency of the resonator optionally.

Abstract: A laminated high-frequency low-pass filter includes a first dielectric layer. A second dielectric layer, a third dielectric layer, a fourth dielectric layer, and a fifth dielectric layer are laminated on the first dielectric layer. An earth electrode is formed on the first dielectric layer. A first capacitive open-circuited stub electrode, a second capacitive open-circuited stub electrode and a third capacitive open-circuited stub electrode are formed on the second dielectric layer. A first strip line electrode and a second strip line electrode are formed on the third dielectric layer. The first and second strip line electrodes are formed as meander lines. A shield electrode is formed on the fourth dielectric layer.

Abstract: Three coil electrode patterns are formed on one surface of a plate containing of a dielectric material. These coil electrode patterns are formed in loop shape, and are disposed in a magnetically connecting state with respect to each other. An input/output terminal pattern and an earth terminal pattern are drawn out from each of the two coil electrode patterns which are disposed toward the end portions of the plate. The input/output terminal pattern and the earth terminal pattern are disposed at a distance for each other so as to provide a predetermined impedance. An earth electrode pattern is drawn out from the center coil electrode pattern. An earth electrode pattern is formed opposite the coil electrode patterns with the plate between them. Earth terminal patterns are formed to the earth electrode pattern. The earth terminal patterns of the earth electrode pattern are connected to the earth terminal patterns of the coil electrode patterns.

Abstract: An earth electrode pattern is formed on one surface of a plate consisting of a dielectric material. Earth terminal patterns are extended from the earth electrode pattern to the side faces of the plate. Two coil electrode patterns are formed on both sides of the earth electrode pattern with plates between the earth electrode pattern and two coil electrode patterns. Take-out terminal patterns and earth terminal patterns are drawn out from the coil electrode patterns toward end portions of the plate. The take-out terminal pattern and the earth terminal pattern of one coil electrode pattern are disposed at a distance having a predetermined impedance. A connecting window for magnetically connecting two coil electrode patterns is formed in the earth electrode pattern. The earth terminal patterns of the earth electrode pattern and the earth terminal patterns of the coil electrode patterns are connected.

Abstract: A composite electronic component containing at least two circuit elements including an inductor.

Abstract: A dielectric resonator for surface mounting comprising two dielectric layers; a conductive layer formed on a plane interposed between the two dielectric layers, the conductive layer being lengthy and having an inductance determined by a length thereof; grounding electrode layers provided on outer surfaces of the two dielectric layers; protective layers for covering outer surfaces of the grounding electrode layers; a first outer connecting terminal provided on a surface of a main body of the resonator and electrically connected to an end of the conductive layer and to the grounding electrode layers, the main body comprising the protective layers, the dielectric layers, the conductive layer and the grounding electrode layers; and a second connecting terminal provided on a surface of the main body and electrically connected to a portion of the conductive layer, the portion being far from the above end of the conductive layer.

Abstract: A bandpass filter consisting of two dielectric resonators coupled with each other, the bandpass filter comprising: a filter body including an intermediate grounding layer, a first pair of dielectric layers, a pair of inductor layers, a second pair of dielectric layers, a pair of outer grounding electrode layers and a pair of protecting layers, one of each pair being laminated on an upper surface of the intermediate grounding electrode layer in the above order to constitute a first resonator and the other of each pair being laminated on a bottom surface of the intermediate grounding electrode layer in the above order to constitute a second resonator; and a plurality of outer connecting terminals provided on outer surfaces of said filter body and connected to predetermined layers among the intermediate grounding electrode layer, inductor layers and outer grounding electrode layers; wherein the intermediate grounding electrode layer has a coupling portion for magnetically coupling one inductor layer formed on th

Abstract: The present invention discloses an electronic component such as an inductor or a bandpass filter, wherein an electronic component core and shielding electrode layers interposed intermediate layers made of a non-metal material. The present invention also discloses a production method of a electronic component. The production method comprises a first step of laminating intermediate layers, shielding electrode layers, and protective layers in this order on both main surfaces of an electronic component core in order to form a laminated body; and a second step of baking the laminated body.

Abstract: The present invention discloses an electronic component such as an inductor, a bandpass filter, or a duplexer wherein an electronic component core and shielding electrode layers interpose intermediate layers made of a non-metal material. The present invention also discloses a production method of an electronic component. The production method comprises a first step of laminating intermediate layers, shielding electrode layers, and protective layers in this order on both main surfaces of an electronic component core in order to form a laminated body; and a second step of baking the laminated body.

Abstract: A bandpass filter comprising a plurality of resonators coupled by a magnetic induction coupling. Each of the resonators includes an equivalent circuit having an LC series circuit and a capacitance element connected in parallel, the LC series circuit including one capacitance element and two inductance elements connected in series to both sides of the one capacitance element. This construction realizes the magnetic induction coupling by utilizing the inductance elements constituting the resonators, without necessitating a separate coupling means such as a capacitance element.

Abstract: A resonator comprising an equivalent circuit including an LC series circuit having a first capacitance element and inductance elements connected in series to both sides of the first capacitance element, and a second capacitance element connected parallel to the LC series circuit. A plurality of resonators having this construction may be magnetically connected in series to provide a filter, by utilizing the two inductance elements constituting parts of the resonator and without necessitating separate coupling members such as capacitors or coils.