Siemens Aktiengesellschaft

Siemens Matsushita Components Gmbh & Co Kg

Thomson-csf

Jurgen Machui

Werner Ruile

Roland Dill

Wolfgang Pahl

Alois Stelzl

Joseph Colineau

Leonhard Michael Reindl

Andreas Bergmann

Hans Kruger

Peter Zibis

Giuliano Visintini

Isidor Schropp

Gunter Muller

Thomas Baier

Stefan Kurp

Christoph Hartel

Brian Lewis

The electronic component, specifically a SAW component with conductive structures disposed on a substrate is encapsulated for protection against environmental influences. The electrically conductive structures are sealed with a gas diffusion-constricting protective layer formed with an electrochemical or ion bombardment process.

Method of producing an electronic component, in particular a surface

The surface acoustic wave (SAW) filter has two or more identical acoustic tracks. The input side of the tracks is electrically connected in parallel and the output side is electrically connected in series, whereby the impedance of input side of the SAW filter is reduced relative to the impedance of the individual acoustic tracks.

Surface acoustic wave filter with plural substantially identical

A surface acoustic wave filter has one or more acoustic filter tracks. Each track has an input interdigital converter, an output interdigital converter, and a reflector. The reflector reflects surface waves between the input and output inter-digital converter by 180.degree.. The reflector is formed with a multiplicity of reflector electrode fingers which are combined into reflector finger groups. Mutually adjacent reflector finger groups are spaced apart by a defined spacing distance such that respective signals in adjacent reflector finger groups are superimposed in antiphase.

Surface acoustic wave filter having a weighted reflector with spaced

An interdigital converter of a surface acoustic wave filter is internally protected against electrostatic discharges. The protection is provided by a resistor which is connected in parallel to the interdigital converter.

Component working with surface acoustic waves

A filter operating with acoustical surface waves includes two acoustical paths each having one unidirectional input transducer, one unidirectional output transducer, and a reflector structure disposed between the input and output transducers. The input transducers in the acoustical paths are structurally identical, the output transducers in the acoustical paths are structurally identical, and the input and output transducers in each of the acoustical paths are spaced apart by the same distance. One of the input transducers or the output transducers are electrically connected in phase opposition, and the other of the input transducers or the output transducers are electrically connected in phase. The reflector structures in the two acoustical paths have substantially the same reflection performance, the reflector structure in one of the acoustical paths is shorter than the reflector structure in the other of the acoustical paths by .lambda./2, the reflector structures in the two acoustical paths are disposed centrally between the input and output transducers, and .lambda. is a wavelength at a mean frequency of the filter.

Multi-channel, narrow-band saw filter

Weighted reflector for surface acoustic waves

Interdigital transducer with finger-width weighting for surface wave

Surface acoustic wave reflector filter having z-shaped propagation paths

Surface acoustic wave reflector filter

A magnetic head employs a gap of magnetic material between two poles. The magnetic material of the gap has a saturation value less than the saturation value of the poles. When the gap material is not saturated, the magnetic field remains contained within this gap.

Magnetic head with saturable gap and matrix device comprising a

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Munchen, Germany

Jurgen Machui