Abstract: A multilayer ceramic capacitor includes a ceramic body including a laminated dielectric layers and laminated internal electrodes, and four external electrodes. The ceramic body includes a first capacitance portion and a second capacitance portion aligned with each other in a lamination direction. The four external electrodes are electrically connected to the internal electrodes in the first capacitance portion that are extracted to a first end surface, the internal electrodes in the first capacitance portion that are extracted to a second end surface, the internal electrodes in the second capacitance portion that are extracted to the first end surface, and the internal electrodes in the second capacitance portion that are extracted to the second end surface, respectively. A dimension in the lamination direction of the ceramic body is smaller than a dimension in a width direction of the ceramic body.

Abstract: A dielectric ceramic composition includes, as a main component, a perovskite compound containing Sr and Zr and may contain Ca and/or Ti, further contains Li and Si, and may contain Mn. When a total content of Zr and Ti is 100 parts by mol, a total content (100×m) of parts by mol of Sr and Ca is 0.8?m?1.3, a content a of parts by mol of Mn is 0?a?10, a content b of parts by mol of Li is 5?b?15, a content c of parts by mol of Si is 20?c?40, a molar ratio x of Ca/(Sr+Ca) is 0?x?0.8, and a molar ratio y of Ti/(Zr+Ti) is 0?y?0.5.

Abstract: A ceramic electronic component includes a ceramic body having first and second end surfaces facing each other, first and second side surfaces facing each other, first and second principal surfaces facing each other, and also includes outer electrodes each of which is provided on at least one portion of a corresponding one of the first and second end surfaces of the ceramic body. Each of the outer electrodes includes an underlying electrode layer provided on at least one portion of a corresponding one of the first and second end surfaces of the ceramic body and also includes a plating layer provided on a corresponding one of the underlying electrode layers and on a corresponding one of regions different from the underlying electrode layers.

Abstract: The present disclosure relates to a front-end module for a telecommunication device with an EBD circuit comprising a hybrid transformer for coupling via a transmit port to the telecommunication device transmitting a first frequency transmit signal, to an antenna, via a receive port to the telecommunication device receiving a second frequency receive signal, and to a tunable impedance circuit. In a first configuration the EBD circuit is configured to isolate the transmit port from the receive port at the first frequency, and the FEM comprises a first filter at the transmit port for attenuating the transmit signal with a predetermined amount at the second frequency. In a second configuration the EBD circuit is configured to isolate the transmit port from the receive port at the second frequency, and the FEM comprises a second filter at the receive port for attenuating the receive signal a predetermined amount at the first frequency.

Abstract: The present disclosure relates to a front-end module for a telecommunication device with an EBD circuit comprising a hybrid transformer for coupling via a transmit port to the telecommunication device transmitting a first frequency transmit signal, to an antenna, via a receive port to the telecommunication device receiving a second frequency receive signal, and to a tunable impedance circuit. In a first configuration the EBD circuit is configured to isolate the transmit port from the receive port at the first frequency, and the FEM comprises a first filter at the transmit port for attenuating the transmit signal with a predetermined amount at the second frequency. In a second configuration the EBD circuit is configured to isolate the transmit port from the receive port at the second frequency, and the FEM comprises a second filter at the receive port for attenuating the receive signal a predetermined amount at the first frequency.

Abstract: A nonreciprocal circuit element having low insertion loss is provided. In the circuit element, three central conductors are disposed such that they intersect each other at specified angles in an electrically isolated condition and a DC bias magnetic field is applied to the intersection. The intersection angles formed by the central conductors are set to different values, corresponding to the rotation angle of the high-frequency magnetic field caused by the DC bias magnetic field. A stronger operating DC magnetic field than that in a conventional circuit element is used to reduce a ferrite loss.

Abstract: A method of making zinc oxide film comprises the steps of forming a zinc oxide layer on a substrate by carrying out radio-frequency sputtering with a target of zinc oxide, forming a zinc oxide layer on said zinc oxide layer by carrying out reactive, direct-current or radio-frequency sputtering with a target of zinc metal.

Abstract: A surface acoustic wave device comprises a substrate and a set of interdigital electrodes disposed thereon and spaced apart. One interdigital electrode is divided along the propagating direction of the surface acoustic wave into a plurality of portion interdigital electrodes which are electrically connected in series. The electrode pattern of the one interdigital electrode is formed asymmetrically such that the static capacitances of at least two adjacent portion electrodes thereof are different from each other, preferably in such a manner that when the device is installed, the total effective static capacitances of the two adjacent portion electrodes will be substantially equal. The static capacitance of the portion electrode having a comb shaped electrode thereof which is to be grounded is selected to be smaller than that of the other portion electrode.

Abstract: A piezoelectric device comprises a ferroelectric ceramic plate as polarized, and electrodes formed on two main surfaces thereof, respectively, intersecting the polarization axis direction. The electrodes are connected to each other by means of an external resistance having a predetermined resistance value. The resistance value is selected to be smaller than the inherent resistance value of the ferroelectric ceramic plate between the two main surfaces. The positive and negative electric charges are stored on the two electrodes due to the pyroelectric effect responsive to a change of the temperature of the ferroelectric ceramic plate. The potential difference caused by the electric charges thus stored is rapidly decreased through the external resistance.