Title :
High frequency SAW filter on diamond
Author :
Higaki, K. ; Nakahata, H. ; Kitabayashi, H. ; Fujii, S. ; Tanabe, K. ; Seki, Y. ; Shikata, S.
Author_Institution :
Res. Labs., Sumitomo Electr. Ind. Ltd., Itami, Japan
Abstract :
Surface acoustic wave (SAW) filters based on diamond which has very high SAW velocity have been investigated. 2.5 GHz low loss narrow-band filter and 1.5 GHz IF filter were demonstrated by the SiO/sub 2//ZnO/diamond structure with zero temperature coefficient of frequency and the ZnO/diamond structure, respectively. The super-high power durability of the ZnO/diamond structure was also confirmed at 2.9 GHz. Diamond SAW filters having high velocity and high power durability, can be expected for broad applications in future high frequency communication systems.
Keywords :
UHF filters; band-pass filters; diamond; surface acoustic wave filters; 1.5 GHz; 2.5 GHz; 2.9 GHz; C; IF filter; SiO/sub 2/-ZnO-C; SiO/sub 2//ZnO/diamond structure; UHF filters; ZnO-C; ZnO/diamond structure; high frequency SAW filter; high power durability; low loss narrow-band filter; surface acoustic wave filters; Band pass filters; Lithography; Narrowband; Optical fiber communication; Radio frequency; Resonator filters; SAW filters; Surface acoustic waves; Temperature; Zinc oxide;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.602924
