Abstract: In some examples, an apparatus includes a first metal layer having a thickness, a piezoelectric material layer having a first side and a second side that is opposite the first side, the piezoelectric material layer first side abutting the first metal layer, the piezoelectric material layer second side having recesses, and a second metal layer abutting the piezoelectric material layer second side, the second metal layer having extensions that fill the recesses to form a metal frame that is at least partially recessed into the piezoelectric material layer. The first metal layer, the piezoelectric material layer, and the second metal layer form a resonator body. The metal frame has a shape governing a resonant mode of the resonator body.

Abstract: A piezoelectric resonator includes a first conductive layer, and a piezoelectric layer affixed to a first side of the first conductive layer. The piezoelectric resonator also includes a stair step frame structure affixed to a first side of the piezoelectric layer, and a second conductive layer, affixed to the first side of the piezoelectric layer and covering the stair step frame structure.

Abstract: An electrical feedthrough (1) is provided for improving the thermal properties and the electromagnetic compatibility (EMC) and also for simplified production of a medical instrument (7), in which electrical feedthrough individual contact pins (4), which are guided through a glass body (2) in a housing (20) of the instrument (7), are electrically connected to one another by a pluggable plug element (5), preferably in the form of a sheet metal part. Here, the plug element (5) firstly provides high thermal and electrical conductivity and secondly provides a shielding area that effectively prevents the input coupling of electromagnetic radiation. Preferably, the plug element (5) is formed in such a way that it independently develops a holding force for securing itself to the contact pins (4).

Abstract: An electrical feedthrough (1) is provided for improving the thermal properties and the electromagnetic compatibility (EMC) and also for simplified production of a medical instrument (7), in which electrical feedthrough individual contact pins (4), which are guided through a glass body (2) in a housing (20) of the instrument (7), are electrically connected to one another by a pluggable plug element (5), preferably in the form of a sheet metal part. Here, the plug element (5) firstly provides high thermal and electrical conductivity and secondly provides a shielding area that effectively prevents the input coupling of electromagnetic radiation. Preferably, the plug element (5) is formed in such a way that it independently develops a holding force for securing itself to the contact pins (4).

Abstract: A receiver for receiving a data signal having a channel profile may include an equalizer, to which the data signal is feedable, the equalizer having a plurality of filters and a switching device coupled to the filters, a selection device, which is disposed such that it determines a first number and a second number in dependence on the channel profile, and the switching device is disposed such that it connects a number of linear filters corresponding to the first number to form a first overall filter and connects a number of linear filters corresponding to the second number to form a second overall filter.

Abstract: An endoscope (1) has a handle (2) as well as a probe part (3) that can be connected thereto via a coupling (4), with an illumination device as well as an eye-piece (17) with an imaging optic being arranged in the handle (2) and image conductors and light conductors in the probe part (3). The coupling includes an image interface and a light interface. In the coupling area, at least one axially engaging guide (6, 8) as well as bayonet-like engaging coupling parts (6, 5) are provided, one of which is embodied as a rotational locking part (5). In the final locked position the locking part (5) is secured by a snap. Preferably, the coupling (4) is provided with an axially engaging guide and additionally axially engaging guides (13, 15; 14, 16) are provided of the illumination system and the image transmission system, which are particularly arranged side-by-side.

Abstract: An endoscope (1) is provided having a handle (2) and a probe part (3) that can be connected thereto, with an illumination system comprising at least one light emitting diode (6) and a video system having an image receiver being arranged in the handle (2). A carrier element (12) made of a heat-conducting material is provided for at least one light emitting diode (6) inside the handle (2), to which the light emitting diode (6) is directly connected. The carrier element thermally contacts the housing parts and/or installation parts of the handle (2) and the probe part (3) for heat conductivity and/or dissipation.

Abstract: In a method for identification of a multiple antenna transmission mode in a radio receiver, at least two antenna-decoupled data streams (s0, s1) are produced by means of an antenna decoupling unit in the receiver. Respective first variables (p0, p1) are calculated for both data streams, and are dependent on the phase change between the data in the respective data stream. An evaluation unit uses these first variables as the basis to decide whether a multiple antenna transmission mode is being used in the transmitter.

Abstract: A discrete sampling control signal, which influences the sampling time, from a sampling phase selection element is calibrated by definition of quantization intervals for a sampling time error signal. For this purpose, a received signal is shifted through a series of time shifts ?i in the signal path upstream of the sampling phase selection element. The sampling time errors ei associated with the respective time shifts ?i are measured. The quantization steps of the sampling control signal that are suitable for the sampling phase selection element are then determined from the relationship obtained between ?i and ei.

Abstract: A method for adapting threshold values in an electronic signal processing device, involving a plurality of different threshold values being calculated and being compared with processing variables calculated in the signal processing device, involves calculation of a common correction value which is valid for the various threshold values. The threshold values are then set on the basis of the common correction value.

Abstract: In a method for synchronization of a mobile radio receiver to a base station, the received signal is sampled using oversampling, by which means sample values are obtained from different sampling phases. The oversampled signal is correlated with a local code, with sample values that are associated with a first sampling phase being processed with a frequency offset with respect to sample values that are associated with a second sampling phase.

Abstract: In a method for synchronization of a mobile radio receiver to a base station, in which a verification step or a plurality of verification steps is or are also carried out in addition to the synchronization steps and one or more identification step or steps which may be present, at least one of the verification steps is carried out in parallel with a synchronization step and/or with an identification step.

Abstract: An apparatus for readjustment of a sampling time in a radio receiver includes a component for determination of any sampling time error in a discrete-value received signal that emits a sampling time error signal. A filter arrangement is provided that includes a multi-rate filter that filters the sampling time error signal. A correction element receives the discrete-value received signal and the filtered sampling time error signal, and emits a discrete-value received signal whose timing has been corrected in accordance with the sampling time error.

Abstract: In a method and an apparatus (1) for transmission diversity mode detection in a mobile radio receiver using a decision function, the decision function which is used for detection of the transmission diversity mode is based on the coherent processing of two successive input signal data tuples {r(k);r(k+1)} and {r(k+2);r(k+3)} and recording of a phase offset between the two tuples.

Abstract: In a method for carrying out a plurality of correlation procedures in a mobile radio system, sample values which have been written to a data memory (DS) are read using a predetermined reading rule. Two correlation procedures are carried out on the basis of the sample values which have been read. This reading rule is in this case independent of the correlation procedure to be carried out.

Abstract: A method for synchronization of a mobile radio receiver having a time slot structure for a radio signal is disclosed. A data stream received by the mobile radio receiver is filtered in a filter, thereby producing a decision sequence of received data as a set of maximum possible determined time slot boundaries. The decision sequence is processed in a two-step method such that, in a first method step, a subset is selected from the decision sequence and, then, in a second method step, the elements of said subset are averaged over time, with the time slot boundary which is used for synchronization being obtained as the result of this averaging process. In this case, the subset is selected using statistical characteristics of those signal sample values that are associated with a time slot boundary, and of those signal sample values which are not associated with a time slot boundary.

Abstract: In a method for synchronization of a receiver to a transmitter which periodically transmits a sequence which is known in the receiver, a subset of possible synchronization times is determined in a first selection process by repeated correlation of the received signal with the known sequence and comparison of the correlation responses, as calculated for the correlations, with a threshold value. The threshold value is in this case varied adaptively as a function of at least one parameter which is measured during the correlations.

Abstract: An endoscope (1) is provided having a handle (2) and a probe part (3) that can be connected thereto, with an illumination system comprising at least one light emitting diode (6) and a video system having an image receiver being arranged in the handle (2). A carrier element (12) made of a heat-conducting material is provided for at least one light emitting diode (6) inside the handle (2), to which the light emitting diode (6) is directly connected. The carrier element thermally contacts the housing parts and/or installation parts of the handle (2) and the probe part (3) for heat conductivity and/or dissipation.

Abstract: An endoscope (1) has a handle (2) as well as a probe part (3) that can be connected thereto via a coupling (4), with an illumination device as well as an eye-piece (17) with an imaging optic being arranged in the handle (2) and image conductors and light conductors in the probe part (3). The coupling includes an image interface and a light interface. In the coupling area, at least one axially engaging guide (6, 8) as well as bayonet-like engaging coupling parts (6, 5) are provided, one of which is embodied as a rotational locking part (5). In the final locked position the locking part (5) is secured by a snap. Preferably, the coupling (4) is provided with an axially engaging guide and additionally axially engaging guides (13, 15; 14, 16) are provided of the illumination system and the image transmission system, which are particularly arranged side-by-side.

Abstract: A receiver has a determination unit to determine a channel profile of received radio signals, the channel profile specifying the distribution of the received radio signals over a plurality of transmission paths, a selection unit to select sections of the channel profile, a calculation unit to calculate coefficients by using the selected sections of the channel profile, and an equalizer to equalize the received radio signals by using the calculated coefficients.