公开(公告)号：DE102006049919A1

公开(公告)日：2008-04-24

申请号：DE102006049919

申请日：2006-10-23

Applicant: EPCOS AG

Inventor： HOFFMANN CHRISTIAN ,  KARTASHEV IGOR

IPC: H01L41/107 ,  H01L41/047

Abstract: The transformer has a body (1) with a functional part (3) and another functional part (2). Each part (2, 3) has outer electrodes (6, 7, 9, 10), which are arranged at a surface of the body. The part (3) has inner electrodes (4, 5), which are arranged in the body, where the inner electrodes are attached at the outer electrodes (6, 7) of the parts. A minimum distance between the outer electrode (9) of the part (3) and the outer electrode (6, 7) of the part (2) is selectively larger than a distance between the outer electrode (9) of the part (3) and the inner electrode (4, 5) of the part (2).

公开(公告)号：DE102006049873A1

公开(公告)日：2008-04-24

申请号：DE102006049873

申请日：2006-10-23

Applicant: EPCOS AG

Inventor： HOFFMANN CHRISTIAN ,  KARTASHEV IGOR

IPC: H01L41/107 ,  H01L41/047

Abstract: The piezotransformer has a body (10) including an input part (1) and an output part (2), where the parts include terminal electrodes (11, 12, 21, 22), which are aligned parallel to main surfaces of the body. A distance between the terminal electrodes of the part (2) is larger than a distance between the terminal electrodes of the part (1). The electrodes of the part (2) are arranged on the main surfaces of the body, where a breadth of the body is smaller than its length. The body is formed in the form of a plate.

公开(公告)号：DE10340438B4

公开(公告)日：2005-08-04

申请号：DE10340438

申请日：2003-09-02

Applicant: EPCOS AG

Inventor： FLUEHR HOLGER ,  BLOCK CHRISTIAN ,  HOFFMANN CHRISTIAN

IPC: H04B1/036 ,  H05K1/00 ,  H05K1/02 ,  H05K1/18 ,  H05K3/28 ,  H05K7/20 ,  H01L23/34 ,  H01L25/10

Abstract: A transmitter module for mobile radio applications includes a multilayer module substrate with levels of metallization and intervening dielectric stacks in which a circuit is implemented by structuring the levels of metallization. In or on the module substrate, at least one HF filter or adjustment network is implemented. On the underside of the module substrate, a cutout, in which a chip element is soldered in a flip-chip-arrangement, is provided. The rear of the chip element pointing to the outside displays a metallization that makes a good thermal contact of the chip element with extrinsic circuit surroundings possible.

公开(公告)号：DE10321247B4

公开(公告)日：2005-08-04

申请号：DE10321247

申请日：2003-05-12

Applicant: EPCOS AG

Inventor： BLOCK CHRISTIAN ,  FLUEHR HOLGER ,  HOFFMANN CHRISTIAN

IPC: H03H7/01 ,  H04B1/04 ,  H04B1/48 ,  H04B1/54 ,  H03F3/19 ,  H01L27/00

Abstract: A transmitter module of a wireless transmission system with at least one transmission path having a power amplifier disposed at the input side includes a low-pass filter disposed at the output side and an impedance converter disposed therebetween. The power amplifier and the low-pass filter are, thereby, disposed on the top surface of a multi-layer carrier substrate. Preferably, the impedance converter is disposed in metallization planes of the carrier substrate. The inventive integration of all of these components in one module especially allows for a step-wise impedance adaptation between the low-impedance amplifier output and the output of the transmitter module having a defined output impedance (e.g. 50 ohm), whereby the impedance adaptation is partially carried out by the low-pass filter. A multistage impedance adaptation allows for a reduction of, e.g., the length of the line sections used in the impedance converter and the signal losses involved.

公开(公告)号：DE10145362A1

公开(公告)日：2003-04-17

申请号：DE10145362

申请日：2001-09-14

Applicant: EPCOS AG

Inventor： HOFFMANN CHRISTIAN ,  AICHHOLZER KLAUS-DIETER

IPC: C04B35/10 ,  H01L21/48 ,  H01L23/498 ,  H05K1/03 ,  H05K3/46 ,  C04B35/622 ,  B28B11/00 ,  B32B18/00 ,  C04B35/64

公开(公告)号：DE10145364A1

公开(公告)日：2003-04-10

申请号：DE10145364

申请日：2001-09-14

Applicant: EPCOS AG

Inventor： HOFFMANN CHRISTIAN ,  AICHHOLZER KLAUS-DIETER

IPC: C04B35/457 ,  C04B35/48 ,  C04B37/00 ,  H01L21/48 ,  H05K1/03 ,  H05K3/46 ,  C04B35/622 ,  B28B11/00 ,  B32B18/00 ,  C04B35/64

Abstract: Production of a ceramic substrate comprises: (a) preparing a base body (2) having a stack (2a) of layers (3) containing non-sintered ceramic material; (b) arranging a rigid constrained layer (4) on the upper surface (6) of the uppermost layer (7) of the stack; (c) fixing the constrained layer to the uppermost layer of the stack and sintering the stack; and (d) removing the constrained layer. Preferably sintering is carried out without using external forces. The constrained layer contains pores into which a sintering agent penetrates during sintering. The constrained layer is made from Al2O3. The sintering agent is made from glass.

公开(公告)号：DE10042359A1

公开(公告)日：2002-03-21

申请号：DE10042359

申请日：2000-08-29

Applicant: EPCOS AG

Inventor： SOMMARIVA HELMUT ,  HOFFMANN CHRISTIAN ,  SUVOROV DANILO ,  VALANT MATJAZ

IPC: C04B35/495 ,  H01G4/12 ,  H01G4/30

Abstract: Capacitor comprises two or more electrode layers (1) lying opposite each other with dielectric layers (2) between them. The dielectric layers are made of a ceramic material containing two different components in a phase different from the other. The components have a perovskite structure with silver on the A positions and niobium and tantalum on the B positions. Components A and B are selected so that the temperature coefficients of their dielectric constants have different polarities in a temperature range. Preferred Features: The dielectric layers have a thickness of 1-50 Micro. The ceramic material contains boric acid as sintering aid.

公开(公告)号：AU8956201A

公开(公告)日：2002-03-13

申请号：AU8956201

申请日：2001-08-14

Applicant: EPCOS AG

Inventor： VALANT MATJAZ ,  SUVOROV DANILO ,  HOFFMANN CHRISTIAN ,  SOMMARIVA HELMUT

IPC: C04B35/00 ,  C04B35/495 ,  C04B35/628 ,  C01G5/00 ,  C01G33/00 ,  C01G35/00

Abstract: A method of producing a ceramic object includes producing particles of a type A and a type B. Each particle has a dimension of at least 5 mum and each type of particle includes a ceramic material that is based on a mixture of silver oxide, niobium oxide and tantalum oxide. The method includes producing a particle mixture by mixing the types of particles, producing a green compact by compressing the particle mixture, and sintering the green compact.

公开(公告)号：DE10042360C1

公开(公告)日：2002-02-28

申请号：DE10042360

申请日：2000-08-29

Applicant: EPCOS AG

Inventor： SOMMARIVA HELMUT ,  HOFFMANN CHRISTIAN ,  SUVOROV DANILO ,  VALANT MATJAZ

IPC: C04B35/00 ,  C04B35/495 ,  H01B3/12 ,  H01P7/10

Abstract: The invention relates to a microwave component comprising a base (1), in entrance surface (6) and a an exit surface (7), said base (1) comprising a ceramic material. Said ceramic material contains at least two different components, available as separate phases, which each have a perowskite structure that has silver in the A positions and niobium or tantalum in the B positions. The composition of component A and the composition of component B is selected in such a manner that the temperature coefficients of their dielectric constants TK epsilon A and TK epsilon B have different signs in a given temperature interval. Advantageously, the proportions of the mixture of component A/component B are selected to result in an as complete a compensation of TK epsilon A and TK epsilon B as possible according to Lichtenecker's law. The temperature gradient of TK epsilon A and TK epsilon B can be adjusted by the quantitative proportion of niobium to tantalum and by adding dopants.