© The Institution of Electrical Engineers
A new low-loss broadband SAW filter is presented. A new configuration using one pair of electrically connected IDTs with an optimum number of fingers, as well as unidirectional IDTs with U-shaped MSCs, is described. Experimental results with bandwidth as wide as 10% and loss as low as 3 dB are achieved. Very accurate computer-aided design of a low-loss filter with MSCs is obtained.
References
-
-
1)
-
H. Kojima ,
Y. Kinoshita ,
M. Hikita ,
T. Tabuchi
.
Velocity, electromechanical coupling factor and acoustic loss of surface shear waves propagating along X-axis on rotated Y-cut plates of LiNbO3.
Electron. Lett.
,
445 -
446
-
2)
-
Hikita, M., Kinoshita, Y., Kojima, H., Tabuchi, T.: `Phase weighting for low loss SAW filters', 1980 Ultrasonics Symp. Proc., IEEE, p. 308–312.
-
3)
-
F.G. Marshall ,
C.O. Newton ,
G.S. Paige
.
Theory and design of surface acoustic wave multistrip coupler.
IEEE Trans.
,
206 -
225
-
4)
-
K. Yamanouchi ,
K. Shibayama
.
Propagation and amplification of Rayleigh waves and piezoelectric leaky waves in LiNbO3.
J. Appl. Phys.
,
856 -
862
-
5)
-
Hikita, M., Kinoshita, Y., Kojima, H., Tabuchi, T.: `800 MHz low loss SAW filters using new phase weighting', IEEE MTT-S International Microwave Symp. Digest, 1982, p. 46–48.
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19840315
Related content
content/journals/10.1049/el_19840315
pub_keyword,iet_inspecKeyword,pub_concept
6
6