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Wall; Bert
Potsdam, DE
No. of patents:

Patent Number Title Of Patent Date Issued
7973449 Transducer for surface acoustic waves and a resonator and a filter having said transducer July 5, 2011
A transducer for surface acoustic waves, and a resonator and a filter for surface acoustic waves having the transducer are provided. The transducer for surface acoustic waves has cells containing two electrode fingers per cell, wherein the transducer exhibits unidirectional behavior for
7847647 Oscillator circuit with acoustic single-port surface wave resonators December 7, 2010
An oscillator circuit includes a combination of two frequency-determining elements, designed as single-port surface wave resonators with interdigital converters, and one active electronic circuit. The two single-port surface wave resonators are connected to each other, avoiding induc
6859117 Resonator filter cascade February 22, 2005
A resonator filter cascade has resonator structures disposed adjacent to one another and form a waveguide for acoustic surface waves, and coupling transducers. The present invention changes resonator filter cascades so that the insertion attenuation is reduced by decreasing the attenuati
6762534 Transversally coupled resonator filter July 13, 2004
The invention relates to a transverse-mode-coupled resonator filter based on surface acoustic waves.The object of the invention is to modify such resonator filters, in which there are disposed adjacent to one another on a substrate (1) a plurality of one-port resonator structures (2; 3),

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