Title :
Track-changing structures on YZ-LiNbO3
Author_Institution :
Corp. Technol., Siemens AG, Munich, Germany
Abstract :
Several types of track changers on YZ-LiNbO3, operating at 434 MHz, have been compared: Conventional 3 dB multistrip couplers (MSC) combined with reflecting multistrip couplers (RMSC) and group type track changers with 3 and 4 electrodes per wave length, respectively. In order to determine the 4-port S-matrix of these track changers experimentally, a test structure consisting of 4 IDTs has been developed and fabricated. We will present theoretical and experimental results of track changers with different acoustic apertures and numbers of electrodes
Keywords :
interdigital transducers; lithium compounds; surface acoustic wave couplers; surface acoustic wave transducers; 4-port S-matrix; 434 MHz; IDTs; LiNbO3; SAW; YZ-LiNbO3; acoustic apertures; electrodes; group type track changers; multistrip couplers; reflecting multistrip couplers; test structure; track changers; track-changing structures; Acoustic devices; Acoustic sensors; Acoustic testing; Apertures; Bandwidth; Couplers; Electrodes; Joining processes; Sensor systems; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-4153-8
DOI :
10.1109/ULTSYM.1997.662984
