Title :
Design of switchable inline filters and compensation of second order effects
Author :
Fischerauer, Alice ; Schott, W.
Author_Institution :
Siemens AG, Munich, Germany
Abstract :
The authors discuss the compensation of second-order effects of a filter structure which provides different transfer functions by operating two or more transducers in parallel, thereby adding or subtracting the respective transmissions in order to obtain the desired functions. For each resulting transfer function, the diffraction and the circuit effects are compensated. The various possibilities of designing this switchable filter are discussed, and a comparison between analysis and measurement of a compensated structure is presented
Keywords :
compensation; surface acoustic wave filters; transfer functions; ultrasonic diffraction; ultrasonic transducers; SAW filter; circuit effects; compensation; design; diffraction; second order effects; switchable inline filters; transducers; transfer functions; transmissions; Admittance; Apertures; Delay effects; Filters; Fingers; Frequency; Geometry; Transducers; Transfer functions; Voltage;
Conference_Titel :
Ultrasonics Symposium, 1992. Proceedings., IEEE 1992
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0562-0
DOI :
10.1109/ULTSYM.1992.276071
