Title :
Surface acoustic wave two resonator filter using synchronous coupling interdigital transducers
Author :
Soluch, Waldemar
Author_Institution :
Inst. of Electron. Mater. Technol., Warsaw, Poland
Abstract :
A surface acoustic wave (SAW) two resonator filter with coupling interdigital transducers (IDTs) located inside the reflectors, was designed, fabricated, and tested. In the filter, electrodes of the coupling IDTs are in spatial synchronism with the reflectors´ electrodes. The filter, fabricated on ST-cut quartz, had a center frequency of 302.6 MHz, insertion loss about 13 dB, and minimum rejection in the stopbands of about 40 dB.
Keywords :
interdigital transducers; surface acoustic wave resonator filters; surface acoustic wave transducers; 13 dB; 302.6 MHz; ST-cut quartz; SiO/sub 2/; surface acoustic wave two resonator filter; synchronous coupling interdigital transducer; Acoustic transducers; Acoustic waves; Aluminum; Coupling circuits; Electrodes; Frequency; Insertion loss; Resonator filters; Strips; Surface acoustic waves;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
