公开(公告)号：DE102005044330A1

公开(公告)日：2007-03-29

申请号：DE102005044330

申请日：2005-09-16

Applicant: EPCOS AG

Inventor： LEIDL ANTON ,  SAUER WOLFGANG ,  SEITZ STEFAN

IPC: H01G7/06

Abstract: A capacitor includes a multi layer structure on a ceramic or crystalline substrate. The multilayer structure includes a lower electrode, an upper electrode, and a dielectric that is tunable by a voltage applied to the electrodes. The multilayer structure is configured such that resonant oscillation modes of bulk acoustic waves can be propagated in the multilayer structure and such that the resonant frequencies of the oscillation modes are outside a first band range of between 810 and 1000 MHz, second band range of between 1700 and 2205 MHz and third band range of between 2400 and 2483.5 MHz.

公开(公告)号：DE102005041816A1

公开(公告)日：2007-03-08

申请号：DE102005041816

申请日：2005-09-02

Applicant: EPCOS AG

Inventor： SAUER WOLFGANG ,  LEIDL ANTON ,  SEITZ STEFAN

IPC: H03H9/15

Abstract: The filter has an upper electrode and a radio frequency signal line in which a resonator is arranged. A switchable direct current voltage source (DC) is provided on the line. A dielectric (D) made of ferroelectric material becomes piezoelectric during the application of direct current. A transverse branch is switched to the signal line over which an electrode of the resonator is connected with the voltage source.

公开(公告)号：DE102005053765A1

公开(公告)日：2007-05-16

申请号：DE102005053765

申请日：2005-11-10

Applicant: EPCOS AG

Inventor： STELZL ALOIS ,  LEIDL ANTON ,  SEITZ STEFAN ,  KRUEGER HANS ,  PAHL WOLFGANG

IPC: B81B7/02 ,  B81C1/00 ,  B81C99/00

公开(公告)号：DE102007038419A1

公开(公告)日：2009-02-26

申请号：DE102007038419

申请日：2007-08-14

Applicant: EPCOS AG

Inventor： PAHL WOLFGANG ,  SEITZ STEFAN

IPC: G08C23/02 ,  G01D11/24 ,  H04B11/00

Abstract: The device has a housing (1) for a mechanical component e.g. motor-gear unit. A sensor (3) e.g. pressure sensor, temperature sensor, acceleration sensor, is provided, in inside of the housing for recording single or multiple operating parameters such as viscosity. A converter (4) e.g. electroacoustic converter, is provided inside the housing for producing acoustic waves (5). A modulator (6) modulates signals produced by the sensor to the acoustic waves. A receiver (8) is arranged outside the housing and has contact towards an outer wall (7) of the housing. An independent claim is also included for a method for transmission of data from/to a housing.